| Invermere (AA8) | Invermere | BC | Clearwater to Invermere |
| Apalachicola Regional (AAF) | Apalachicola | FL | Clearwater to Apalachicola Regional |
| Aalborg (AAL) | Aalborg | | Clearwater to Aalborg |
| Aarhus (AAR) | Aarhus | | Clearwater to Aarhus |
| Lehigh Valley International (ABE) | Allentown | PA | Clearwater to Lehigh Valley International |
| Abilene Regional (ABI) | Abilene | TX | Clearwater to Abilene Regional |
| Albuquerque/Sunport International (ABQ) | Albuquerque | NM | Clearwater to Albuquerque/Sunport International |
| Aberdeen Regional (ABR) | Aberdeen | SD | Clearwater to Aberdeen Regional |
| Southwest Georgia Regional (ABY) | Albany | GA | Clearwater to Southwest Georgia Regional |
| Aberdeen International Dyce (ABZ) | Aberdeen | | Clearwater to Aberdeen International Dyce |
| Antrim County (ACB) | Bellaire | MI | Clearwater to Antrim County |
| Nantucket Memorial (ACK) | Nantucket | MA | Clearwater to Nantucket Memorial |
| Waco Regional (ACT) | Waco | TX | Clearwater to Waco Regional |
| California Redwood Coast-Humboldt County (ACV) | Arcata | CA | Clearwater to California Redwood Coast-Humboldt County |
| Atlantic City International (ACY) | Atlantic City | NJ | Clearwater to Atlantic City International |
| Lenawee County (ADG) | Adrian | MI | Clearwater to Lenawee County |
| Ardmore Municipal (ADM) | Ardmore | OK | Clearwater to Ardmore Municipal |
| Robert F Swinnie (ADR) | Andrews | SC | Clearwater to Robert F Swinnie |
| Addison/Dallas (ADS) | Dallas | TX | Clearwater to Addison/Dallas |
| Ada Municipal (ADT) | Ada | OK | Clearwater to Ada Municipal |
| Albert Lea Municipal (AEL) | Albert Lea | MN | Clearwater to Albert Lea Municipal |
| Alexandria International (AEX) | Alexandria | LA | Clearwater to Alexandria International |
| Jaffrey Silver Ranch (AFN) | Jaffrey | NH | Clearwater to Jaffrey Silver Ranch |
| Afton Municipal (AFO) | Afton | WY | Clearwater to Afton Municipal |
| Fort Worth Alliance (AFW) | Fort Worth | TX | Clearwater to Fort Worth Alliance |
| Allegheny County (AGC) | Pittsburgh | PA | Clearwater to Allegheny County |
| Angelholm Helsingborg (AGH) | Angelholm | | Clearwater to Angelholm Helsingborg |
| Magnolia Municipal (AGO) | Magnolia | AR | Clearwater to Magnolia Municipal |
| Augusta Regional/Bush Field (AGS) | Augusta | GA | Clearwater to Augusta Regional/Bush Field |
| Aguascalientes/Jesus Teran Intl (AGU) | Aguascalientes | Agu | Clearwater to Aguascalientes/Jesus Teran Intl |
| Ardmore Downtown Executive (AHD) | Ardmore | OK | Clearwater to Ardmore Downtown Executive |
| Arapahoe Municipal (AHF) | Arapahoe | NE | Clearwater to Arapahoe Municipal |
| Amery Municipal (AHH) | Amery | WI | Clearwater to Amery Municipal |
| Ashland Municipal-Sumner Parker Field (AHM) | Ashland | OR | Clearwater to Ashland Municipal-Sumner Parker Field |
| Athens/Ben Epps (AHN) | Athens | GA | Clearwater to Athens/Ben Epps |
| Alliance Municipal (AIA) | Alliance | NE | Clearwater to Alliance Municipal |
| Anderson Municipal-Darlington Field (AID) | Anderson | IN | Clearwater to Anderson Municipal-Darlington Field |
| Aiken Regional (AIK) | Aiken | SC | Clearwater to Aiken Regional |
| Atlantic Municipal (AIO) | Atlantic | IA | Clearwater to Atlantic Municipal |
| George Downer (AIV) | Aliceville | AL | Clearwater to George Downer |
| Lee C Fine Memorial (AIZ) | KAISER/LAKE OZARK | MO | Clearwater to Lee C Fine Memorial |
| Cayley/A J Flying Ranch (AJ7) | Cayley | AB | Clearwater to Cayley/A J Flying Ranch |
| Akron Fulton International (AKC) | Akron | OH | Clearwater to Akron Fulton International |
| Colorado Plains Regional (AKO) | Akron | CO | Clearwater to Colorado Plains Regional |
| Fort Mackay (AL4) | Albian | AB | Clearwater to Fort Mackay |
| Albany International (ALB) | Albany | NY | Clearwater to Albany International |
| Alpine-Casparis Municipal (ALE) | Alpine | TX | Clearwater to Alpine-Casparis Municipal |
| Alice International (ALI) | Alice | TX | Clearwater to Alice International |
| Alamogordo White Sands Regional (ALM) | Alamogordo | NM | Clearwater to Alamogordo White Sands Regional |
| St Louis Regional (ALN) | Alton | IL | Clearwater to St Louis Regional |
| Waterloo Regional (ALO) | Waterloo | IA | Clearwater to Waterloo Regional |
| San Luis Valley Regional/Bergman Field (ALS) | Alamosa | CO | Clearwater to San Luis Valley Regional/Bergman Field |
| Walla Walla Regional (ALW) | Walla Walla | WA | Clearwater to Walla Walla Regional |
| Thomas C Russell Field (ALX) | Alexander City | AL | Clearwater to Thomas C Russell Field |
| Rick Husband Amarillo International (AMA) | Amarillo | TX | Clearwater to Rick Husband Amarillo International |
| Animas Air Park (AMK) | Durango | CO | Clearwater to Animas Air Park |
| Gratiot Community (AMN) | Alma | MI | Clearwater to Gratiot Community |
| Amsterdam Schiphol (AMS) | Amsterdam | | Clearwater to Amsterdam Schiphol |
| Ames Municipal (AMW) | Ames | IA | Clearwater to Ames Municipal |
| Anniston Regional (ANB) | Anniston | AL | Clearwater to Anniston Regional |
| Ted Stevens Anchorage International (ANC) | Anchorage | AK | Clearwater to Ted Stevens Anchorage International |
| Anderson Regional (AND) | Anderson | SC | Clearwater to Anderson Regional |
| Angers Loire (ANE) | Angers | | Clearwater to Angers Loire |
| Tri-State Steuben County (ANQ) | Angola | IN | Clearwater to Tri-State Steuben County |
| Antwerp (ANR) | Antwerp | | Clearwater to Antwerp |
| Ainsworth Regional (ANW) | Ainsworth | NE | Clearwater to Ainsworth Regional |
| Anthony Municipal (ANY) | Anthony | KS | Clearwater to Anthony Municipal |
| Lima Allen County (AOH) | Lima | OH | Clearwater to Lima Allen County |
| Altoona/Blair County (AOO) | Altoona | PA | Clearwater to Altoona/Blair County |
| Centennial (APA) | Denver | CO | Clearwater to Centennial |
| Napa County (APC) | Napa | CA | Clearwater to Napa County |
| Naples Municipal (APF) | Naples | FL | Clearwater to Naples Municipal |
| Alpena County Regional (APN) | Alpena | MI | Clearwater to Alpena County Regional |
| Marion County-Brown Field (APT) | Jasper | TN | Clearwater to Marion County-Brown Field |
| Apple Valley (APV) | Apple Valley | CA | Clearwater to Apple Valley |
| Nakusp (AQ5) | Nakusp | BC | Clearwater to Nakusp |
| New Iberia/Acadiana Regional (ARA) | New Iberia | LA | Clearwater to New Iberia/Acadiana Regional |
| Ann Arbor Municipal (ARB) | Ann Arbor | MI | Clearwater to Ann Arbor Municipal |
| Walnut Ridge Regional (ARG) | Walnut Ridge | AR | Clearwater to Walnut Ridge Regional |
| Stockholm Arlanda (ARN) | Stockholm | | Clearwater to Stockholm Arlanda |
| Watertown International (ART) | Watertown | NY | Clearwater to Watertown International |
| Lakeland/Noble F. Lee Memorial Field (ARV) | Minocqua | WI | Clearwater to Lakeland/Noble F. Lee Memorial Field |
| Andros Town/Fresh Creek (ASD) | Andros Island | | Clearwater to Andros Town/Fresh Creek |
| Aspen-Pitkin County/Sardy Field (ASE) | Aspen | CO | Clearwater to Aspen-Pitkin County/Sardy Field |
| Nashua-Boire Field (ASH) | Nashua | NH | Clearwater to Nashua-Boire Field |
| Harrison County (ASL) | Marshall | TX | Clearwater to Harrison County |
| Talladega Municipal (ASN) | Talladega | AL | Clearwater to Talladega Municipal |
| Austin (ASQ) | Austin | NV | Clearwater to Austin |
| Astoria Regional (AST) | Astoria | OR | Clearwater to Astoria Regional |
| John F Kennedy Memorial (ASX) | Ashland | WI | Clearwater to John F Kennedy Memorial |
| Ashley Municipal (ASY) | Ashley | ND | Clearwater to Ashley Municipal |
| Arthur's Town (ATC) | Cat Island | | Clearwater to Arthur's Town |
| Antlers Municipal (ATE) | Antlers | OK | Clearwater to Antlers Municipal |
| Hartsfield Jackson Atlanta International (ATL) | Atlanta | GA | Clearwater to Hartsfield Jackson Atlanta International |
| Gordon K Bush Ohio University (ATO) | Athens/Albany | OH | Clearwater to Gordon K Bush Ohio University |
| Artesia Municipal (ATS) | Artesia | NM | Clearwater to Artesia Municipal |
| Appleton International (ATW) | Appleton | WI | Clearwater to Appleton International |
| Watertown Regional (ATY) | Watertown | SD | Clearwater to Watertown Regional |
| Oliver (AU3) | Oliver | BC | Clearwater to Oliver |
| Vanderhoof (AU4) | Vanderhoof | BC | Clearwater to Vanderhoof |
| Augusta State (AUG) | Augusta | ME | Clearwater to Augusta State |
| Austin Municipal (AUM) | Austin | MN | Clearwater to Austin Municipal |
| Auburn Municipal (AUN) | Auburn | CA | Clearwater to Auburn Municipal |
| Auburn University Regional (AUO) | Auburn | AL | Clearwater to Auburn University Regional |
| Austin Bergstrom International (AUS) | Austin | TX | Clearwater to Austin Bergstrom International |
| Wausau Downtown (AUW) | Wausau | WI | Clearwater to Wausau Downtown |
| Chicago/Aurora Municipal (AUZ) | Chicago | IL | Clearwater to Chicago/Aurora Municipal |
| Asheville Regional (AVL) | Asheville | NC | Clearwater to Asheville Regional |
| Avon Park Executive (AVO) | Avon Park | FL | Clearwater to Avon Park Executive |
| Wilkes-Barre/Scranton International (AVP) | Scranton | PA | Clearwater to Wilkes-Barre/Scranton International |
| Marana Regional (AVW) | Tucson | AZ | Clearwater to Marana Regional |
| Catalina (AVX) | Avalon | CA | Clearwater to Catalina |
| West Memphis Municipal (AWM) | West Memphis | AR | Clearwater to West Memphis Municipal |
| Wallblake/Clayton J Lloyd International (AXA) | The Valley | | Clearwater to Wallblake/Clayton J Lloyd International |
| Algona Municipal (AXG) | Algona | IA | Clearwater to Algona Municipal |
| Chandler Field (AXN) | Alexandria | MN | Clearwater to Chandler Field |
| Altus/Quartz Mountain Regional (AXS) | Altus | OK | Clearwater to Altus/Quartz Mountain Regional |
| Auglaize County Neil Armstrong (AXV) | Wapakoneta | OH | Clearwater to Auglaize County Neil Armstrong |
| Angel Fire (Colfax County) (AXX) | Angel Fire | NM | Clearwater to Angel Fire (Colfax County) |
| Waycross-Ware County (AYS) | Waycross | GA | Clearwater to Waycross-Ware County |
| Cache Creek (AZ5) | Cache-Creek | BC | Clearwater to Cache Creek |
| Phoenix-Mesa Gateway (AZA) | Phoenix | AZ | Clearwater to Phoenix-Mesa Gateway |
| Kalamazoo/Battle Creek International (AZO) | Kalamazoo | MI | Clearwater to Kalamazoo/Battle Creek International |
| Barnes Municipal (BAF) | Westfield | MA | Clearwater to Barnes Municipal |
| Benson Municipal (BBB) | Benson | MN | Clearwater to Benson Municipal |
| Bay City Regional (BBC) | Bay City | TX | Clearwater to Bay City Regional |
| Curtis Field (BBD) | Brady | TX | Clearwater to Curtis Field |
| Blackbushe (BBS) | London | | Clearwater to Blackbushe |
| Broken Bow Municipal/Keith Glaze Field (BBW) | Broken Bow | NE | Clearwater to Broken Bow Municipal/Keith Glaze Field |
| Wings Field (BBX) | Philadelphia | PA | Clearwater to Wings Field |
| Virginia Tech Montgomery Executive (BCB) | Blacksburg | VA | Clearwater to Virginia Tech Montgomery Executive |
| Bryce Canyon (BCE) | Bryce Canyon | UT | Clearwater to Bryce Canyon |
| Boca Raton (BCT) | Boca Raton | FL | Clearwater to Boca Raton |
| Baudette International (BDE) | Baudette | MN | Clearwater to Baudette International |
| Blanding Municipal (BDG) | Blanding | UT | Clearwater to Blanding Municipal |
| Bradley International (BDL) | Windsor Locks | CT | Clearwater to Bradley International |
| Igor I Sikorsky Memorial (BDR) | Bridgeport | CT | Clearwater to Igor I Sikorsky Memorial |
| Bandon State (BDY) | Bandon | OR | Clearwater to Bandon State |
| Laurence G Hanscom Field (BED) | Bedford | MA | Clearwater to Laurence G Hanscom Field |
| Southwest Michigan Regional (BEH) | Benton Harbor | MI | Clearwater to Southwest Michigan Regional |
| Brest Bretagne (BES) | Brest | | Clearwater to Brest Bretagne |
| Bradford Regional (BFD) | Bradford | PA | Clearwater to Bradford Regional |
| Western Nebraska Regional/William B Heilig Field (BFF) | Scottsbluff | NE | Clearwater to Western Nebraska Regional/William B Heilig Field |
| Bullfrog Basin (BFG) | Glen Canyon | UT | Clearwater to Bullfrog Basin |
| King County International Boeing Field (BFI) | Seattle | WA | Clearwater to King County International Boeing Field |
| Meadows Field (BFL) | Bakersfield | CA | Clearwater to Meadows Field |
| Mobile Downtown (BFM) | Mobile | AL | Clearwater to Mobile Downtown |
| Beaver County (BFP) | Beaver Falls | PA | Clearwater to Beaver County |
| Virgil I Grissom Municipal (BFR) | Bedford | IN | Clearwater to Virgil I Grissom Municipal |
| Belfast International (Aldergrove) (BFS) | Belfast | | Clearwater to Belfast International (Aldergrove) |
| Beaufort County (BFT) | Beaufort | SC | Clearwater to Beaufort County |
| Hutchinson County (BGD) | Borger | TX | Clearwater to Hutchinson County |
| Decatur County Industrial Air Park (BGE) | Bainbridge | GA | Clearwater to Decatur County Industrial Air Park |
| Greater Binghamton Edwin A Link Field (BGM) | Binghamton | NY | Clearwater to Greater Binghamton Edwin A Link Field |
| Bangor International (BGR) | Bangor | ME | Clearwater to Bangor International |
| Bagdad (BGT) | Bagdad | AZ | Clearwater to Bagdad |
| Hancock County-Bar Harbor (BHB) | Bar Harbor | ME | Clearwater to Hancock County-Bar Harbor |
| George Best Belfast City (BHD) | Belfast | | Clearwater to George Best Belfast City |
| Birmingham-Shuttlesworth International (BHM) | Birmingham | AL | Clearwater to Birmingham-Shuttlesworth International |
| Birmingham International (BHX) | Birmingham | | Clearwater to Birmingham International |
| Beatrice Municipal (BIE) | Beatrice | NE | Clearwater to Beatrice Municipal |
| Bishop Regional (BIH) | Bishop | CA | Clearwater to Bishop Regional |
| Billings Logan International (BIL) | Billings | MT | Clearwater to Billings Logan International |
| South Bimini (BIM) | Bimini Islands | | Clearwater to South Bimini |
| Bismarck Municipal (BIS) | Bismarck | ND | Clearwater to Bismarck Municipal |
| Echo Valley (BJ4) | Echo Valley | BC | Clearwater to Echo Valley |
| Rocky Mountain Metropolitan/Jeffco (BJC) | Denver | CO | Clearwater to Rocky Mountain Metropolitan/Jeffco |
| Bemidji Regional (BJI) | Bemidji | MN | Clearwater to Bemidji Regional |
| Wayne County (BJJ) | Wooster | OH | Clearwater to Wayne County |
| Leon/Bajio/Guanajuato International (BJX) | Leon | Gua | Clearwater to Leon/Bajio/Guanajuato International |
| Stephens County (BKD) | Breckenridge | TX | Clearwater to Stephens County |
| Baker City Municipal (BKE) | Baker City | OR | Clearwater to Baker City Municipal |
| Branson (BKG) | Branson | MO | Clearwater to Branson |
| Burke Lakefront (BKL) | Cleveland | OH | Clearwater to Burke Lakefront |
| Allen C Perkinson Blackstone Army Air Field (BKT) | Blackstone | VA | Clearwater to Allen C Perkinson Blackstone Army Air Field |
| Raleigh County Memorial (BKW) | Beckley | WV | Clearwater to Raleigh County Memorial |
| Brookings Regional (BKX) | Brookings | SD | Clearwater to Brookings Regional |
| Boulder City Municipal (BLD) | Boulder City | NV | Clearwater to Boulder City Municipal |
| Borlange/Dala (BLE) | Borlange | | Clearwater to Borlange/Dala |
| Mercer County (BLF) | Bluefield | WV | Clearwater to Mercer County |
| Blythe (BLH) | Blythe | CA | Clearwater to Blythe |
| Bellingham International (BLI) | Bellingham | WA | Clearwater to Bellingham International |
| Blackpool (BLK) | Blackpool | | Clearwater to Blackpool |
| Billund (BLL) | Billund | | Clearwater to Billund |
| Monmouth Executive (BLM) | Belmar | NJ | Clearwater to Monmouth Executive |
| Blue Canyon - Nyack (BLU) | Emigrant Gap | CA | Clearwater to Blue Canyon - Nyack |
| MidAmerica St Louis Scott AFB (BLV) | Belleville | IL | Clearwater to MidAmerica St Louis Scott AFB |
| Stockholm City/Bromma (BMA) | Stockholm | | Clearwater to Stockholm City/Bromma |
| Brigham City Regional (BMC) | Brigham City | UT | Clearwater to Brigham City Regional |
| Monroe County (BMG) | Bloomington | IN | Clearwater to Monroe County |
| Central Illinois Regional at Bloomington Normal (BMI) | Bloomington | IL | Clearwater to Central Illinois Regional at Bloomington Normal |
| Borkum (BMK) | Borkum | | Clearwater to Borkum |
| Berlin Regional (BML) | Berlin | NH | Clearwater to Berlin Regional |
| Beaumont Municipal (BMT) | Beaumont | TX | Clearwater to Beaumont Municipal |
| Nashville International (BNA) | Nashville | TN | Clearwater to Nashville International |
| Banning Municipal (BNG) | Banning | CA | Clearwater to Banning Municipal |
| Barnwell Regional (BNL) | Barnwell | SC | Clearwater to Barnwell Regional |
| Burns Municipal (BNO) | Burns | OR | Clearwater to Burns Municipal |
| Boone Municipal (BNW) | Boone | IA | Clearwater to Boone Municipal |
| Bournemouth (BOH) | Bournemouth | | Clearwater to Bournemouth |
| Boise Air Terminal Gowen Field (BOI) | Boise | ID | Clearwater to Boise Air Terminal Gowen Field |
| Brookings Airport (BOK) | Brookings | OR | Clearwater to Brookings Airport |
| Boston Logan International (BOS) | Boston | MA | Clearwater to Boston Logan International |
| Bartow Executive (BOW) | Bartow | FL | Clearwater to Bartow Executive |
| Miley Memorial Field (Big Piney) (BPI) | Big Piney | WY | Clearwater to Miley Memorial Field (Big Piney) |
| Jack Brooks Regional (BPT) | Beaumont/Port Arthur | TX | Clearwater to Jack Brooks Regional |
| London Biggin Hill (BQH) | London | | Clearwater to London Biggin Hill |
| Brunswick Golden Isles (BQK) | Brunswick | GA | Clearwater to Brunswick Golden Isles |
| Aguadilla/Rafael Hernandez (Borinquen) (BQN) | Aguadilla | | Clearwater to Aguadilla/Rafael Hernandez (Borinquen) |
| Brainerd Lakes Regional (BRD) | Brainerd | MN | Clearwater to Brainerd Lakes Regional |
| Bremen (BRE) | Bremen | | Clearwater to Bremen |
| Southeast Iowa Regional (BRL) | Burlington | IA | Clearwater to Southeast Iowa Regional |
| Brownsville/South Padre Island International (BRO) | Brownsville | TX | Clearwater to Brownsville/South Padre Island International |
| Bristol (BRS) | Bristol | | Clearwater to Bristol |
| Brussels National (BRU) | Brussels | | Clearwater to Brussels National |
| Luneort/Bremerhaven (BRV) | Bremerhaven | | Clearwater to Luneort/Bremerhaven |
| Samuels Field (BRY) | Bardstown | KY | Clearwater to Samuels Field |
| Bisbee Municipal (BSQ) | Bisbee | AZ | Clearwater to Bisbee Municipal |
| Skypark (BTF) | Bountiful | UT | Clearwater to Skypark |
| Battle Creek Executive (BTL) | Battle Creek | MI | Clearwater to Battle Creek Executive |
| Bert Mooney (BTM) | Butte | MT | Clearwater to Bert Mooney |
| Marlboro County Jetport - H.E. Avent Field (BTN) | Bennettsville | SC | Clearwater to Marlboro County Jetport - H.E. Avent Field |
| Pittsburgh/Butler Regional Airport (BTP) | Butler | PA | Clearwater to Pittsburgh/Butler Regional Airport |
| Baton Rouge Metro Ryan Field (BTR) | Baton Rouge | LA | Clearwater to Baton Rouge Metro Ryan Field |
| Bettles Airport (BTT) | Bettles | AK | Clearwater to Bettles Airport |
| Burlington International (BTV) | Burlington | VT | Clearwater to Burlington International |
| Beatty (BTY) | Beatty | NV | Clearwater to Beatty |
| Cram Field (BUB) | Burwell | NE | Clearwater to Cram Field |
| Buffalo Niagara International (BUF) | Buffalo | NY | Clearwater to Buffalo Niagara International |
| Butler Memorial (BUM) | Butler | MO | Clearwater to Butler Memorial |
| Hollywood Burbank (BUR) | Burbank | CA | Clearwater to Hollywood Burbank |
| Beauvais-Tille (BVA) | Beauvais | | Clearwater to Beauvais-Tille |
| Bartlesville Municipal (BVO) | Bartlesville | OK | Clearwater to Bartlesville Municipal |
| Batesville Regional (BVX) | Batesville | AR | Clearwater to Batesville Regional |
| Beverly Regional (BVY) | Beverly | MA | Clearwater to Beverly Regional |
| Brawley Municipal (BWC) | Brawley | CA | Clearwater to Brawley Municipal |
| Brownwood Regional (BWD) | Brownwood | TX | Clearwater to Brownwood Regional |
| Barrow-in-Furness/Walney Is (BWF) | Barrow | | Clearwater to Barrow-in-Furness/Walney Is |
| Bowling Green Warren County Regional (BWG) | Bowling Green | KY | Clearwater to Bowling Green Warren County Regional |
| Baltimore/Washington Intl Thurgood Marshall (BWI) | Baltimore | MD | Clearwater to Baltimore/Washington Intl Thurgood Marshall |
| Bowman Municipal (BWM) | Bowman | ND | Clearwater to Bowman Municipal |
| George R Carr Memorial Airfield (BXA) | Bogalusa | LA | Clearwater to George R Carr Memorial Airfield |
| Buckeye Municipal (BXK) | Buckeye | AZ | Clearwater to Buckeye Municipal |
| Borrego Valley (BXS) | Borrego Springs | CA | Clearwater to Borrego Valley |
| Albert-Picardie (BYF) | Albert | | Clearwater to Albert-Picardie |
| Johnson County (BYG) | Buffalo | WY | Clearwater to Johnson County |
| Arkansas International (BYH) | Blytheville | AR | Clearwater to Arkansas International |
| Burley Municipal (BYI) | Burley | ID | Clearwater to Burley Municipal |
| Bozeman Yellowstone International (BZN) | Bozeman | MT | Clearwater to Bozeman Yellowstone International |
| Wexford County (CAD) | Cadillac | MI | Clearwater to Wexford County |
| Columbia Metropolitan (CAE) | Columbia | SC | Clearwater to Columbia Metropolitan |
| Akron/Canton Regional (CAK) | Akron | OH | Clearwater to Akron/Canton Regional |
| Clayton Municipal Airpark (CAO) | Clayton | NM | Clearwater to Clayton Municipal Airpark |
| Cascais Municipal (CAT) | Lisbon | | Clearwater to Cascais Municipal |
| Carlisle Lake District (CAX) | Carlisle | | Clearwater to Carlisle Lake District |
| Greater Cumberland Regional (CBE) | Cumberland | MD | Clearwater to Greater Cumberland Regional |
| Council Bluffs Municipal (CBF) | Council Bluffs | IA | Clearwater to Council Bluffs Municipal |
| Cambridge (CBG) | Cambridge | | Clearwater to Cambridge |
| Shalz Field (CBK) | Colby | KS | Clearwater to Shalz Field |
| Coimbra (CBP) | Coimbra | | Clearwater to Coimbra |
| Clinton Municipal (CCA) | Clinton | AR | Clearwater to Clinton Municipal |
| Cable (CCB) | Upland | CA | Clearwater to Cable |
| Crane County (CCG) | Crane | TX | Clearwater to Crane County |
| Buchanan Field (CCR) | Concord | CA | Clearwater to Buchanan Field |
| Northeast Iowa Regional (CCY) | Charles City | IA | Clearwater to Northeast Iowa Regional |
| Chub Cay (CCZ) | Berry Islands | | Clearwater to Chub Cay |
| Cedar City Regional (CDC) | Cedar City | UT | Clearwater to Cedar City Regional |
| Paris Charles de Gaulle (CDG) | Paris | | Clearwater to Paris Charles de Gaulle |
| Harrell Field (CDH) | Camden | AR | Clearwater to Harrell Field |
| Woodward Field (CDN) | Camden | SC | Clearwater to Woodward Field |
| Chadron Municipal (CDR) | Chadron | NE | Clearwater to Chadron Municipal |
| Childress Municipal (CDS) | Childress | TX | Clearwater to Childress Municipal |
| Essex County (CDW) | Caldwell | NJ | Clearwater to Essex County |
| Del Norte Co Regional/Jack Mcnamara Field (CEC) | Crescent City | CA | Clearwater to Del Norte Co Regional/Jack Mcnamara Field |
| Westover Arb/Westover Metropolitan (CEF) | Chicopee | MA | Clearwater to Westover Arb/Westover Metropolitan |
| Hawarden (CEG) | Chester | | Clearwater to Hawarden |
| Cherbourg Maupertus (CER) | Cherbourg | | Clearwater to Cherbourg Maupertus |
| Cholet-Le Pontreau Roland Garros (CET) | Cholet | | Clearwater to Cholet-Le Pontreau Roland Garros |
| Oconee County Regional (CEU) | Clemson | SC | Clearwater to Oconee County Regional |
| Mettel Field (CEV) | Connersville | IN | Clearwater to Mettel Field |
| Bob Sikes (CEW) | Crestview | FL | Clearwater to Bob Sikes |
| Kyle-Oakley Field (CEY) | Murray | KY | Clearwater to Kyle-Oakley Field |
| Cortez Municipal (CEZ) | Cortez | CO | Clearwater to Cortez Municipal |
| Coulter Field (CFD) | Bryan | TX | Clearwater to Coulter Field |
| Creston Valley Regional (CFQ) | Creston | BC | Clearwater to Creston Valley Regional |
| Caen Carpiquet (CFR) | Caen | | Clearwater to Caen Carpiquet |
| Greenlee County (CFT) | Clifton | AZ | Clearwater to Greenlee County |
| Coffeyville Municipal (CFV) | Coffeyville | KS | Clearwater to Coffeyville Municipal |
| Cambridge-Dorchester Regional (CGE) | Cambridge | MD | Clearwater to Cambridge-Dorchester Regional |
| Cuyahoga County (CGF) | Cleveland | OH | Clearwater to Cuyahoga County |
| Cape Girardeau Regional (CGI) | Cape Girardeau | MO | Clearwater to Cape Girardeau Regional |
| Casa Grande Municipal (CGZ) | Casa Grande | AZ | Clearwater to Casa Grande Municipal |
| Lovell Field (CHA) | Chattanooga | TN | Clearwater to Lovell Field |
| Chickasha Municipal (CHK) | Chickasha | OK | Clearwater to Chickasha Municipal |
| Challis (CHL) | Challis | ID | Clearwater to Challis |
| Charlottesville Albemarle (CHO) | Charlottesville | VA | Clearwater to Charlottesville Albemarle |
| Charleston International (CHS) | Charleston | SC | Clearwater to Charleston International |
| Chiloquin State (CHZ) | Chiloquin | OR | Clearwater to Chiloquin State |
| Chico Municipal (CIC) | Chico | CA | Clearwater to Chico Municipal |
| The Eastern Iowa (CID) | Cedar Rapids | IA | Clearwater to The Eastern Iowa |
| Craig-Moffat (CIG) | Craig | CO | Clearwater to Craig-Moffat |
| Arthur N Neu (CIN) | Carroll | IA | Clearwater to Arthur N Neu |
| Cairo Regional (CIR) | Cairo | IL | Clearwater to Cairo Regional |
| Chippewa County International (CIU) | Sault Ste Marie | MI | Clearwater to Chippewa County International |
| North Central West Virginia (CKB) | Clarksburg | WV | Clearwater to North Central West Virginia |
| Fletcher Field (CKM) | Clarksdale | MS | Clearwater to Fletcher Field |
| Crookston Municipal Kirkwood Field (CKN) | Crookston | MN | Clearwater to Crookston Municipal Kirkwood Field |
| Outlaw Field (CKV) | Clarksville | TN | Clearwater to Outlaw Field |
| Carlsbad/McClellan-Palomar (CLD) | Carlsbad | CA | Clearwater to Carlsbad/McClellan-Palomar |
| Cleveland/Hopkins International (CLE) | Cleveland | OH | Clearwater to Cleveland/Hopkins International |
| New Coalinga Municipal (CLG) | Coalinga | CA | Clearwater to New Coalinga Municipal |
| Clintonville Municipal (CLI) | Clintonville | WI | Clearwater to Clintonville Municipal |
| Clinton Regional (CLK) | Clinton | OK | Clearwater to Clinton Regional |
| Easterwood Field (CLL) | College Station | TX | Clearwater to Easterwood Field |
| William R Fairchild International (CLM) | Port Angeles | WA | Clearwater to William R Fairchild International |
| Colima (CLQ) | Colima | Col | Clearwater to Colima |
| Cliff Hatfield Memorial (CLR) | Calipatria | CA | Clearwater to Cliff Hatfield Memorial |
| Chehalis-Centralia (CLS) | Chehalis | WA | Clearwater to Chehalis-Centralia |
| Charlotte Douglas International (CLT) | Charlotte | NC | Clearwater to Charlotte Douglas International |
| Columbus Municipal (CLU) | Columbus | IN | Clearwater to Columbus Municipal |
| Clearwater Airpark (CLW) | Clearwater | FL | Clearwater to Clearwater Airpark |
| John Glenn International (CMH) | Columbus | OH | Clearwater to John Glenn International |
| University of Illinois-Willard (CMI) | Champaign/Urbana | IL | Clearwater to University of Illinois-Willard |
| Houghton County Memorial (CMX) | Hancock | MI | Clearwater to Houghton County Memorial |
| Sparta/Fort Mccoy (CMY) | Sparta | WI | Clearwater to Sparta/Fort Mccoy |
| Fremont County (CNE) | Canon City | CO | Clearwater to Fremont County |
| Claremont Municipal (CNH) | Claremont | NH | Clearwater to Claremont Municipal |
| Blosser Municipal (CNK) | Concordia | KS | Clearwater to Blosser Municipal |
| Sindal (CNL) | Sindal | | Clearwater to Sindal |
| Cavern City Air Terminal (CNM) | Carlsbad | NM | Clearwater to Cavern City Air Terminal |
| Chino (CNO) | Chino | CA | Clearwater to Chino |
| Chanute Martin Johnson (CNU) | Chanute | KS | Clearwater to Chanute Martin Johnson |
| Waco Texas State Techical College (CNW) | Waco | TX | Clearwater to Waco Texas State Techical College |
| Canyonlands Field (CNY) | Moab | UT | Clearwater to Canyonlands Field |
| Columbia (COA) | Columbia | CA | Clearwater to Columbia |
| Yellowstone Regional (COD) | Cody | WY | Clearwater to Yellowstone Regional |
| Coeur D'alene/Pappy Boyington Field (COE) | Coeur D'Alene | ID | Clearwater to Coeur D'alene/Pappy Boyington Field |
| Merritt Island (COI) | Merritt Island | FL | Clearwater to Merritt Island |
| Coleman Municipal (COM) | Coleman | TX | Clearwater to Coleman Municipal |
| Concord Municipal (CON) | Concord | NH | Clearwater to Concord Municipal |
| City of Colorado Springs Municipal (COS) | Colorado Springs | CO | Clearwater to City of Colorado Springs Municipal |
| Cotulla-La Salle County (COT) | Cotulla | TX | Clearwater to Cotulla-La Salle County |
| Columbia Regional (COU) | Columbia | MO | Clearwater to Columbia Regional |
| Congo Town (COX) | Andros Island | | Clearwater to Congo Town |
| Copenhagen Kastrup (CPH) | Copenhagen | | Clearwater to Copenhagen Kastrup |
| Compton/Woodley (CPM) | Compton | CA | Clearwater to Compton/Woodley |
| Casper/Natrona County International (CPR) | Casper | WY | Clearwater to Casper/Natrona County International |
| St Louis Downtown (CPS) | Cahokia/St Louis | IL | Clearwater to St Louis Downtown |
| Debert (CQ3) | Debert | NS | Clearwater to Debert |
| Calais-Dunkerque (CQF) | Calais | | Clearwater to Calais-Dunkerque |
| Grand Strand North Myrtle Beach (CRE) | North Myrtle Beach | SC | Clearwater to Grand Strand North Myrtle Beach |
| Jacksonville Executive at Craig (CRG) | Jacksonville | FL | Clearwater to Jacksonville Executive at Craig |
| Brussels South Charleroi (CRL) | Charleroi | | Clearwater to Brussels South Charleroi |
| Corpus Christi International (CRP) | Corpus Christi | TX | Clearwater to Corpus Christi International |
| C David Campbell Field-Corsicana Municipal (CRS) | Corsicana | TX | Clearwater to C David Campbell Field-Corsicana Municipal |
| Z M Jack Stell Field (CRT) | Crossett | AR | Clearwater to Z M Jack Stell Field |
| Yeager (CRW) | Charleston | WV | Clearwater to Yeager |
| Roscoe Turner (CRX) | Corinth | MS | Clearwater to Roscoe Turner |
| Columbus Metropolitan (CSG) | Columbus | GA | Clearwater to Columbus Metropolitan |
| Cabo San Lucas International (CSL) | Los Cabos | Baj | Clearwater to Cabo San Lucas International |
| Clinton-Sherman (CSM) | Clinton | OK | Clearwater to Clinton-Sherman |
| Carson City (CSN) | Carson City | NV | Clearwater to Carson City |
| Creston Municipal (CSQ) | Creston | IA | Clearwater to Creston Municipal |
| Crossville Memorial/Whitson Field (CSV) | Crossville | TN | Clearwater to Crossville Memorial/Whitson Field |
| Cut Bank International (CTB) | Cut Bank | MT | Clearwater to Cut Bank International |
| Chester County G O Carlson (CTH) | Coatesville | PA | Clearwater to Chester County G O Carlson |
| Canton Municipal (CTK) | Canton | SD | Clearwater to Canton Municipal |
| Cottonwood (CTW) | Cottonwood | AZ | Clearwater to Cottonwood |
| Cortland County-Chase Field (CTX) | Cortland | NY | Clearwater to Cortland County-Chase Field |
| Cross City (CTY) | Cross City | FL | Clearwater to Cross City |
| Clinton-Sampson County (CTZ) | Clinton | NC | Clearwater to Clinton-Sampson County |
| Jim Hamilton L.B. Owens (CUB) | Columbia | SC | Clearwater to Jim Hamilton L.B. Owens |
| Cushing Municipal (CUH) | Cushing | OK | Clearwater to Cushing Municipal |
| Cancun International (CUN) | Cancun | Qui | Clearwater to Cancun International |
| Cincinnati Northern Kentucky International (CVG) | Cincinnati | OH | Clearwater to Cincinnati Northern Kentucky International |
| Cuernavaca/Gen Mariano Matamoros (CVJ) | Cuernavaca | Mor | Clearwater to Cuernavaca/Gen Mariano Matamoros |
| Clovis Municipal (CVN) | Clovis | NM | Clearwater to Clovis Municipal |
| Corvallis Municipal (CVO) | Corvallis | OR | Clearwater to Corvallis Municipal |
| Coventry (CVT) | Coventry | | Clearwater to Coventry |
| Kings County Municipal (CW3) | Waterville | NS | Clearwater to Kings County Municipal |
| Central Wisconsin (CWA) | Mosinee | WI | Clearwater to Central Wisconsin |
| Chennault International (CWF) | Lake Charles | LA | Clearwater to Chennault International |
| Clinton Municipal (CWI) | Clinton | IA | Clearwater to Clinton Municipal |
| Cardiff (CWL) | Cardiff | | Clearwater to Cardiff |
| Cochise County (CWX) | Willcox | AZ | Clearwater to Cochise County |
| Calexico International (CXL) | Calexico | CA | Clearwater to Calexico International |
| Conroe North Houston Regional (CXO) | Houston | TX | Clearwater to Conroe North Houston Regional |
| Cheyenne Regional/Jerry Olson Field (CYS) | Cheyenne | WY | Clearwater to Cheyenne Regional/Jerry Olson Field |
| Nuevo Chichen Itza (CZA) | Chichen Itza | Yuc | Clearwater to Nuevo Chichen Itza |
| Burlington Executive (CZB) | Burlington | ON | Clearwater to Burlington Executive |
| Boundary Bay (CZBB) | Vancouver | BC | Clearwater to Boundary Bay |
| Cozumel Intl (CZM) | Cozumel | Qui | Clearwater to Cozumel Intl |
| Dimmit County (CZT) | Carrizo Springs | TX | Clearwater to Dimmit County |
| Daytona Beach International (DAB) | Daytona Beach | FL | Clearwater to Daytona Beach International |
| Barstow-Daggett (DAG) | Daggett | CA | Clearwater to Barstow-Daggett |
| Dallas Love Field (DAL) | Dallas | TX | Clearwater to Dallas Love Field |
| Danville Regional (DAN) | Danville | VA | Clearwater to Danville Regional |
| Dayton International James M Cox (DAY) | Dayton | OH | Clearwater to Dayton International James M Cox |
| Dublin W H Bud Barron (DBN) | Dublin | GA | Clearwater to Dublin W H Bud Barron |
| Dubuque Regional (DBQ) | Dubuque | IA | Clearwater to Dubuque Regional |
| Pryor Field Regional (DCU) | Decatur | AL | Clearwater to Pryor Field Regional |
| Dodge City Regional (DDC) | Dodge City | KS | Clearwater to Dodge City Regional |
| Decatur (DEC) | Decatur | IL | Clearwater to Decatur |
| Decorah Municipal (DEH) | Decorah | IA | Clearwater to Decorah Municipal |
| Denver International (DEN) | Denver | CO | Clearwater to Denver International |
| Coleman A Young Municipal (DET) | Detroit | MI | Clearwater to Coleman A Young Municipal |
| Defiance Memorial (DFI) | Defiance | OH | Clearwater to Defiance Memorial |
| Dallas-Fort Worth International (DFW) | Dallas | TX | Clearwater to Dallas-Fort Worth International |
| Douglas Municipal (DGL) | Douglas | AZ | Clearwater to Douglas Municipal |
| Converse County (DGW) | Douglas | WY | Clearwater to Converse County |
| Dothan Regional (DHN) | Dothan | AL | Clearwater to Dothan Regional |
| Den Helder / De Kooy (DHR) | Den Helder | | Clearwater to Den Helder / De Kooy |
| Dalhart Municipal (DHT) | Dalhart | TX | Clearwater to Dalhart Municipal |
| Dickinson Theodore Roosevelt Regional (DIK) | Dickinson | ND | Clearwater to Dickinson Theodore Roosevelt Regional |
| Chautauqua County/Dunkirk (DKK) | Dunkirk | NY | Clearwater to Chautauqua County/Dunkirk |
| Duluth International (DLH) | Duluth | MN | Clearwater to Duluth International |
| Dillon County Airport (DLL) | Dillon | SD | Clearwater to Dillon County Airport |
| Dillon (DLN) | Dillon | MT | Clearwater to Dillon |
| The Dalles Municipal/Columbia Gorge Regional (DLS) | The Dalles | OR | Clearwater to The Dalles Municipal/Columbia Gorge Regional |
| Deming Municipal (DMN) | Deming | NM | Clearwater to Deming Municipal |
| Sedalia Regional (DMO) | Sedalia | MO | Clearwater to Sedalia Regional |
| Dundee (DND) | Dundee | | Clearwater to Dundee |
| Daniel Field (DNL) | Augusta | GA | Clearwater to Daniel Field |
| Dalton Municipal (DNN) | Dalton | GA | Clearwater to Dalton Municipal |
| Dinard Bretagne (Pleurtuit St Malo) (DNR) | Dinard | | Clearwater to Dinard Bretagne (Pleurtuit St Malo) |
| Denison Municipal (DNS) | Denison | IA | Clearwater to Denison Municipal |
| Vermilion Regional (DNV) | Danville | IL | Clearwater to Vermilion Regional |
| Deauville Normandie (DOL) | Deauville | | Clearwater to Deauville Normandie |
| Dover AFB (DOV) | Dover | DE | Clearwater to Dover AFB |
| Dupage (DPA) | Chicago | IL | Clearwater to Dupage |
| Drummond Island (DRE) | Drummond Island | MI | Clearwater to Drummond Island |
| Beauregard Regional (DRI) | De Ridder | LA | Clearwater to Beauregard Regional |
| Durango/La Plata County (DRO) | Durango | CO | Clearwater to Durango/La Plata County |
| Del Rio International (DRT) | Del Rio | TX | Clearwater to Del Rio International |
| Doncaster Sheffield (DSA) | Doncaster | | Clearwater to Doncaster Sheffield |
| Destin Executive (DSI) | Destin | FL | Clearwater to Destin Executive |
| Des Moines International (DSM) | Des Moines | IA | Clearwater to Des Moines International |
| Dansville Municipal (DSV) | Dansville | NY | Clearwater to Dansville Municipal |
| Delta Municipal (DTA) | Delta | UT | Clearwater to Delta Municipal |
| Detroit Lakes-Wething Field (DTL) | Detroit Lakes | MN | Clearwater to Detroit Lakes-Wething Field |
| Shreveport Downtown (DTN) | Shreveport | LA | Clearwater to Shreveport Downtown |
| Detroit Metro Wayne County (DTW) | Detroit | MI | Clearwater to Detroit Metro Wayne County |
| Dunnville (DU9) | Dunnville | ON | Clearwater to Dunnville |
| Durant Regional - Eaker Field (DUA) | Durant | OK | Clearwater to Durant Regional - Eaker Field |
| Dublin (DUB) | Dublin | | Clearwater to Dublin |
| Halliburton Field (DUC) | Duncan | OK | Clearwater to Halliburton Field |
| Bisbee Douglas International (DUG) | Douglas/Bisbee | AZ | Clearwater to Bisbee Douglas International |
| Dubois Regional (DUJ) | DuBois | PA | Clearwater to Dubois Regional |
| Dusseldorf (DUS) | Dusseldorf | | Clearwater to Dusseldorf |
| Devils Lake Regional (DVL) | Devils Lake | ND | Clearwater to Devils Lake Regional |
| Davenport Municipal (DVN) | Davenport | IA | Clearwater to Davenport Municipal |
| Phoenix Deer Valley (DVT) | Phoenix | AZ | Clearwater to Phoenix Deer Valley |
| David Wayne Hooks Memorial (DWH) | Houston | TX | Clearwater to David Wayne Hooks Memorial |
| Danbury Municipal (DXR) | Danbury | CT | Clearwater to Danbury Municipal |
| Doylestown (DYL) | Doylestown | PA | Clearwater to Doylestown |
| Olds-Didsbury (EA3) | Olds-Didsbury | AB | Clearwater to Olds-Didsbury |
| Phifer Airfield (EAN) | Wheatland | WY | Clearwater to Phifer Airfield |
| Kearney Regional (EAR) | Kearney | NE | Clearwater to Kearney Regional |
| Pangborn Memorial (EAT) | Wenatchee | WA | Clearwater to Pangborn Memorial |
| Chippewa Valley Regional (EAU) | Eau Claire | WI | Clearwater to Chippewa Valley Regional |
| Esbjerg (EBJ) | Esbjerg | | Clearwater to Esbjerg |
| Webster City Municipal (EBS) | Webster City | IA | Clearwater to Webster City Municipal |
| Iosco County (ECA) | East Tawas | MI | Clearwater to Iosco County |
| Elizabeth City Regional & Coast Guard Station (ECG) | Elizabeth City | NC | Clearwater to Elizabeth City Regional & Coast Guard Station |
| Northwest Florida Beaches International (ECP) | Panama City | FL | Clearwater to Northwest Florida Beaches International |
| Mondell Field (ECS) | Newcastle | WY | Clearwater to Mondell Field |
| Fox Creek (ED4) | Fox Creek | AB | Clearwater to Fox Creek |
| Northeastern Regional (EDE) | Edenton | NC | Clearwater to Northeastern Regional |
| Edinburgh International (EDI) | Edinburgh | | Clearwater to Edinburgh International |
| El Dorado/Captain Jack Thomas Memorial (EDK) | El Dorado | KS | Clearwater to El Dorado/Captain Jack Thomas Memorial |
| La Roche-Sur-Yon/Les Ajoncs (EDM) | La Roche-Sur-Yon | | Clearwater to La Roche-Sur-Yon/Les Ajoncs |
| Needles (EED) | Needles | CA | Clearwater to Needles |
| Dilliant-Hopkins (EEN) | Keene | NH | Clearwater to Dilliant-Hopkins |
| Airdrie (EF4) | Airdrie | AB | Clearwater to Airdrie |
| Ellington (EFD) | Houston | TX | Clearwater to Ellington |
| Northeast Kingdom International (EFK) | Newport | VT | Clearwater to Northeast Kingdom International |
| Jefferson Municipal (EFW) | Jefferson | IA | Clearwater to Jefferson Municipal |
| Lacombe (EG3) | Lacombe | AB | Clearwater to Lacombe |
| Drumheller Municipal (EG4) | Drumheller | AB | Clearwater to Drumheller Municipal |
| Leeds East (EGCM) | Church Fenton | | Clearwater to Leeds East |
| Eagle County Regional (EGE) | Eagle | CO | Clearwater to Eagle County Regional |
| Retford (Gamston) (EGNE) | Retford | | Clearwater to Retford (Gamston) |
| Maverick County Memorial International (EGP) | Eagle Pass | TX | Clearwater to Maverick County Memorial International |
| North Weald (EGSX) | North Weald | | Clearwater to North Weald |
| Cranfield (EGTC) | Cranfield | | Clearwater to Cranfield |
| Eagle River Union (EGV) | Eagle River | WI | Clearwater to Eagle River Union |
| Ponoka Industrial (EH3) | Ponoka | AB | Clearwater to Ponoka Industrial |
| Eindhoven (EIN) | Eindhoven | | Clearwater to Eindhoven |
| R Terrance B Lettsome Intl (EIS) | Tortola | | Clearwater to R Terrance B Lettsome Intl |
| Dublin/Weston (EIWT) | Dublin | | Clearwater to Dublin/Weston |
| Stettler (EJ3) | Stettler | AB | Clearwater to Stettler |
| Eureka/Murray Field (EKA) | Eureka | CA | Clearwater to Eureka/Murray Field |
| Elkhart Municipal (EKI) | Elkhart | IN | Clearwater to Elkhart Municipal |
| Elkins/Randolph County (EKN) | Elkins | WV | Clearwater to Elkins/Randolph County |
| Elko Regional/Harris Field (EKO) | Elko | NV | Clearwater to Elko Regional/Harris Field |
| Eskilstuna (EKT) | Eskilstuna | | Clearwater to Eskilstuna |
| Addington Field (EKX) | Elizabethtown | KY | Clearwater to Addington Field |
| Hanna (EL4) | Hanna | AB | Clearwater to Hanna |
| Valleyview (EL5) | Valleyview | AB | Clearwater to Valleyview |
| Eagle Lake (ELA) | Eagle Lake | TX | Clearwater to Eagle Lake |
| South Arkansas Regional at Goodwin Field (ELD) | El Dorado | AR | Clearwater to South Arkansas Regional at Goodwin Field |
| North Eleuthera (ELH) | Eleuthera Island | | Clearwater to North Eleuthera |
| Elk City Regional Business (ELK) | Elk City | OK | Clearwater to Elk City Regional Business |
| Elmira/Corning Regional (ELM) | Elmira | NY | Clearwater to Elmira/Corning Regional |
| Bowers Field (ELN) | Ellensburg | WA | Clearwater to Bowers Field |
| El Paso International (ELP) | El Paso | TX | Clearwater to El Paso International |
| Ely/Yelland Field (ELY) | Ely | NV | Clearwater to Ely/Yelland Field |
| Wellsville Municipal/Tarantine Field (ELZ) | Wellsville | NY | Clearwater to Wellsville Municipal/Tarantine Field |
| Innisfail (EM4) | Innisfail | AB | Clearwater to Innisfail |
| Swan Hills (EM5) | Swan Hills | AB | Clearwater to Swan Hills |
| East Midlands (EMA) | Nottingham Derby Leicester | | Clearwater to East Midlands |
| Emden (EME) | Emden | | Clearwater to Emden |
| Kemmerer Municipal (EMM) | Kemmerer | WY | Clearwater to Kemmerer Municipal |
| Emporia Municipal (EMP) | Emporia | KS | Clearwater to Emporia Municipal |
| San Gabriel Valley (EMT) | El Monte | CA | Clearwater to San Gabriel Valley |
| Three Hills (EN3) | Three Hills | AB | Clearwater to Three Hills |
| High River (EN4) | High River | AB | Clearwater to High River |
| Cold Lake Regional (EN5) | Cold Lake | AB | Clearwater to Cold Lake Regional |
| Kenai Municipal (ENA) | Kenai | AK | Clearwater to Kenai Municipal |
| Centralia Municipal (ENL) | Centralia | IL | Clearwater to Centralia Municipal |
| Nenana Municipal (ENN) | Nenana | AK | Clearwater to Nenana Municipal |
| Enschede/Twente (ENS) | Enschede | | Clearwater to Enschede/Twente |
| Wendover (ENV) | Wendover | UT | Clearwater to Wendover |
| Kenosha Regional (ENW) | Kenosha | WI | Clearwater to Kenosha Regional |
| Keokuk Municipal (EOK) | Keokuk | IA | Clearwater to Keokuk Municipal |
| Neosho Hugh Robinson (EOS) | Neosho | MO | Clearwater to Neosho Hugh Robinson |
| Barrhead (EP3) | Barrhead | AB | Clearwater to Barrhead |
| Ephrata Municipal (EPH) | Ephrata | WA | Clearwater to Ephrata Municipal |
| Camrose (EQ3) | Camrose | AB | Clearwater to Camrose |
| Erie International/Tom Ridge Field (ERI) | Erie | PA | Clearwater to Erie International/Tom Ridge Field |
| Kerrville Municipal/Louis Schreiner Field (ERV) | Kerrville | TX | Clearwater to Kerrville Municipal/Louis Schreiner Field |
| Westlock (ES4) | Westlock | AB | Clearwater to Westlock |
| Delta County (ESC) | Escanaba | MI | Clearwater to Delta County |
| Orcas Island Airport (ESD) | Eastsound | WA | Clearwater to Orcas Island Airport |
| Esler Regional (ESF) | Alexandria | LA | Clearwater to Esler Regional |
| Shoreham/Brighton City (ESH) | Shoreham | | Clearwater to Shoreham/Brighton City |
| Easton/Newnam Field (ESN) | Easton | MD | Clearwater to Easton/Newnam Field |
| Ohkay Owingeh (ESO) | Espanola | NM | Clearwater to Ohkay Owingeh |
| Stroudsburg-Pocono (ESP) | East Stroudsburg | PA | Clearwater to Stroudsburg-Pocono |
| Essen/Mulheim (ESS) | Essen | | Clearwater to Essen/Mulheim |
| Estherville Municipal (EST) | Estherville | IA | Clearwater to Estherville Municipal |
| West Bend Municipal (ETB) | West Bend | WI | Clearwater to West Bend Municipal |
| Eastland Municipal (ETN) | Eastland | TX | Clearwater to Eastland Municipal |
| Enterprise Municipal (ETS) | Enterprise | AL | Clearwater to Enterprise Municipal |
| Weedon Field (EUF) | Eufaula | AL | Clearwater to Weedon Field |
| Mahlon Sweet Field (EUG) | Eugene | OR | Clearwater to Mahlon Sweet Field |
| Vegreville (EV3) | Vegreville | AB | Clearwater to Vegreville |
| Mayerthorpe (EV5) | Mayerthorpe | AB | Clearwater to Mayerthorpe |
| Tofield (EV7) | Tofield | AB | Clearwater to Tofield |
| Eveleth-Virginia Municipal (EVM) | Eveleth | MN | Clearwater to Eveleth-Virginia Municipal |
| Evansville Regional (EVV) | Evansville | IN | Clearwater to Evansville Regional |
| Evanston-Uinta County Burns Field (EVW) | Evanston | WY | Clearwater to Evanston-Uinta County Burns Field |
| Evreux Fauville AB (EVX) | Evreux | | Clearwater to Evreux Fauville AB |
| Saint Paul (EW3) | St Paul | AB | Clearwater to Saint Paul |
| New Bedford Regional (EWB) | New Bedford | MA | Clearwater to New Bedford Regional |
| Newton City County (EWK) | Newton | KS | Clearwater to Newton City County |
| Coastal Carolina Regional (EWN) | New Bern | NC | Clearwater to Coastal Carolina Regional |
| Newark Liberty International (EWR) | Newark | NJ | Clearwater to Newark Liberty International |
| Wetaskiwin Regional (EX3) | Wetaskiwin | AB | Clearwater to Wetaskiwin Regional |
| Exeter (EXT) | Exeter | | Clearwater to Exeter |
| Yerington Municipal (EYR) | Yerington | NV | Clearwater to Yerington Municipal |
| Key West International (EYW) | Key West | FL | Clearwater to Key West International |
| Farnborough (FAB) | London | | Clearwater to Farnborough |
| Fairbanks International (FAI) | Fairbanks | AK | Clearwater to Fairbanks International |
| Farmington Regional (FAM) | Farmington | MO | Clearwater to Farmington Regional |
| Hector International Fargo (FAR) | Fargo | ND | Clearwater to Hector International Fargo |
| Fresno Yosemite International (FAT) | Fresno | CA | Clearwater to Fresno Yosemite International |
| Fayetteville Regional/Grannis Field (FAY) | Fayetteville | NC | Clearwater to Fayetteville Regional/Grannis Field |
| Warren Thomas Josephburg (FB6) | Edmonton | AB | Clearwater to Warren Thomas Josephburg |
| Faribault Municipal (FBL) | Faribault | MN | Clearwater to Faribault Municipal |
| Fort Bridger Airport (FBR) | Fort Bridger | WY | Clearwater to Fort Bridger Airport |
| Fairbury Municipal (FBY) | Fairbury | NE | Clearwater to Fairbury Municipal |
| Glacier Park International (FCA) | Kalispell | MT | Clearwater to Glacier Park International |
| Fresno Chandler Executive (FCH) | Fresno | CA | Clearwater to Fresno Chandler Executive |
| Flying Cloud (FCM) | Minneapolis | MN | Clearwater to Flying Cloud |
| Nordholz Naval Base (FCN) | Nordholz | | Clearwater to Nordholz Naval Base |
| Forrest City Municipal (FCY) | Forrest City | AR | Clearwater to Forrest City Municipal |
| Frederick Municipal (FDK) | Frederick | MD | Clearwater to Frederick Municipal |
| Frederick Regional (FDR) | Frederick | OK | Clearwater to Frederick Regional |
| Findlay (FDY) | Findlay | OH | Clearwater to Findlay |
| Albertus (FEP) | Freeport | IL | Clearwater to Albertus |
| Fremont Municipal (FET) | Fremont | NE | Clearwater to Fremont Municipal |
| First Flight (FFA) | Kill Devil Hills | NC | Clearwater to First Flight |
| Fairfield Municipal (FFL) | Fairfield | IA | Clearwater to Fairfield Municipal |
| Fergus Falls Municipal-Einar Mickelson Field (FFM) | Fergus Falls | MN | Clearwater to Fergus Falls Municipal-Einar Mickelson Field |
| Capital City (FFT) | Frankfort | KY | Clearwater to Capital City |
| Fox Harbour (FH4) | Fox Harbour | NS | Clearwater to Fox Harbour |
| Sierra Vista Municipal/Libby AAF (FHU) | Fort Huachuca | AZ | Clearwater to Sierra Vista Municipal/Libby AAF |
| Fillmore Municipal (FIL) | Fillmore | UT | Clearwater to Fillmore Municipal |
| Venango Regional (FKL) | Franklin | PA | Clearwater to Venango Regional |
| Franklin Municipal-John Beverly Rose (FKN) | Franklin | VA | Clearwater to Franklin Municipal-John Beverly Rose |
| Fond Du Lac County (FLD) | Fond Du Lac | WI | Clearwater to Fond Du Lac County |
| Flensburg Schaferhaus (FLF) | Flensburg | | Clearwater to Flensburg Schaferhaus |
| Flagstaff Pulliam (FLG) | Flagstaff | AZ | Clearwater to Flagstaff Pulliam |
| Fort Lauderdale Hollywood International (FLL) | Fort Lauderdale | FL | Clearwater to Fort Lauderdale Hollywood International |
| Florence Regional (FLO) | Florence | SC | Clearwater to Florence Regional |
| Marion County Regional (FLP) | Flippin | AR | Clearwater to Marion County Regional |
| Sherman Army Airfield (FLV) | Fort Leavenworth | KS | Clearwater to Sherman Army Airfield |
| Fallon Municipal (FLX) | Fallon | NV | Clearwater to Fallon Municipal |
| Fort Meade (Odenton) Tipton (FME) | Fort Meade Odenton | MD | Clearwater to Fort Meade (Odenton) Tipton |
| Four Corners Regional (FMN) | Farmington | NM | Clearwater to Four Corners Regional |
| Munster Osnabruck International (FMO) | Munster Osnabruck | | Clearwater to Munster Osnabruck International |
| Fort Madison Municipal (FMS) | Fort Madison | IA | Clearwater to Fort Madison Municipal |
| Page Field (FMY) | Fort Myers | FL | Clearwater to Page Field |
| Northern Colorado Regional (FNL) | Ft Collins/Loveland | CO | Clearwater to Northern Colorado Regional |
| Bishop International (FNT) | Flint | MI | Clearwater to Bishop International |
| Fort Dodge Regional (FOD) | Fort Dodge | IA | Clearwater to Fort Dodge Regional |
| Topeka Regional (FOE) | Topeka | KS | Clearwater to Topeka Regional |
| Francis S Gabreski (FOK) | Westhampton Beach | NY | Clearwater to Francis S Gabreski |
| Grand Bahama International (FPO) | Freeport | | Clearwater to Grand Bahama International |
| Treasure Coast International (FPR) | Fort Pierce | FL | Clearwater to Treasure Coast International |
| Perry-Foley (FPY) | Perry | FL | Clearwater to Perry-Foley |
| Friday Harbor (FRD) | Friday Harbor | WA | Clearwater to Friday Harbor |
| Republic Long Island (FRG) | Farmingdale | NY | Clearwater to Republic Long Island |
| French Lick Municipal (FRH) | French Lick | IN | Clearwater to French Lick Municipal |
| Fairmont Municipal (FRM) | Fairmont | MN | Clearwater to Fairmont Municipal |
| Front Royal-Warren County (FRR) | Front Royal | VA | Clearwater to Front Royal-Warren County |
| Eastern Slopes Regional (FRY) | Fryeburg | ME | Clearwater to Eastern Slopes Regional |
| Sioux Falls Regional, Joe Foss Field (FSD) | Sioux Falls | SD | Clearwater to Sioux Falls Regional, Joe Foss Field |
| Fort Scott Municipal (FSK) | Fort Scott | KS | Clearwater to Fort Scott Municipal |
| Fort Smith Regional (FSM) | Fort Smith | AR | Clearwater to Fort Smith Regional |
| Fort Stockton-Pecos County (FST) | Fort Stockton | TX | Clearwater to Fort Stockton-Pecos County |
| Fort Sumner Municipal (FSU) | Fort Sumner | NM | Clearwater to Fort Sumner Municipal |
| Fort Worth Meacham International (FTW) | Fort Worth | TX | Clearwater to Fort Worth Meacham International |
| Fulton County/Brown Field (FTY) | Atlanta | GA | Clearwater to Fulton County/Brown Field |
| Fullerton Municipal (FUL) | Fullerton | CA | Clearwater to Fullerton Municipal |
| Fort Wayne International (FWA) | Fort Wayne | IN | Clearwater to Fort Wayne International |
| Branson West Municipal - Emerson Field (FWB) | Branson West | MO | Clearwater to Branson West Municipal - Emerson Field |
| Okotoks Air Ranch (FX2) | Calgary | AB | Clearwater to Okotoks Air Ranch |
| Manning Municipal (FX4) | Manning | AB | Clearwater to Manning Municipal |
| Fort Lauderdale Executive (FXE) | Fort Lauderdale | FL | Clearwater to Fort Lauderdale Executive |
| Forest City Municipal (FXY) | Forest City | IA | Clearwater to Forest City Municipal |
| Fayetteville Municipal (FYM) | Fayetteville | TN | Clearwater to Fayetteville Municipal |
| Drake Field (FYV) | Fayetteville | AR | Clearwater to Drake Field |
| Northeast Alabama Regional (GAD) | Gadsden | AL | Clearwater to Northeast Alabama Regional |
| Gage (GAG) | Gage | OK | Clearwater to Gage |
| Montgomery County Airpark (GAI) | Gaithersburg | MD | Clearwater to Montgomery County Airpark |
| Edward G Pitka Sr (GAL) | Galena | AK | Clearwater to Edward G Pitka Sr |
| Cotswold (Kemble) (GBA) | Cirencester | | Clearwater to Cotswold (Kemble) |
| Great Bend Municipal (GBD) | Great Bend | KS | Clearwater to Great Bend Municipal |
| Galesburg Municipal (GBG) | Galesburg | IL | Clearwater to Galesburg Municipal |
| Gillette-Campbell County (GCC) | Gillette | WY | Clearwater to Gillette-Campbell County |
| Grand Coulee Dam (GCD) | Electric City | WA | Clearwater to Grand Coulee Dam |
| Guernsey (GCI) | Guernsey | | Clearwater to Guernsey |
| Garden City Regional (GCK) | Garden City | KS | Clearwater to Garden City Regional |
| Grand Canyon National Park (GCN) | Grand Canyon | AZ | Clearwater to Grand Canyon National Park |
| Greeneville-Greene County Municipal (GCY) | Greeneville | TN | Clearwater to Greeneville-Greene County Municipal |
| Donaldson Field (GDC) | Greenville | SC | Clearwater to Donaldson Field |
| Guadalajara/Don Miguel Hidalgo y Costilla (GDL) | Guadalajara | Jal | Clearwater to Guadalajara/Don Miguel Hidalgo y Costilla |
| Gardner Municipal (GDM) | Gardner | MA | Clearwater to Gardner Municipal |
| Dawson Community (GDV) | Glendive | MT | Clearwater to Dawson Community |
| Gladwin Zettel Memorial (GDW) | Gladwin | MI | Clearwater to Gladwin Zettel Memorial |
| Delaware Coastal (GED) | Georgetown | DE | Clearwater to Delaware Coastal |
| Spokane International (GEG) | Spokane | WA | Clearwater to Spokane International |
| South Big Horn County (GEY) | Greybull | WY | Clearwater to South Big Horn County |
| Grand Forks International (GFK) | Grand Forks | ND | Clearwater to Grand Forks International |
| Floyd Bennett Memorial (GFL) | Glens Falls | NY | Clearwater to Floyd Bennett Memorial |
| Granville-Breville/Mont Saint Michel (GFR) | Granville | | Clearwater to Granville-Breville/Mont Saint Michel |
| Georgetown County (GGE) | Georgetown | SC | Clearwater to Georgetown County |
| East Texas Regional (GGG) | Longview | TX | Clearwater to East Texas Regional |
| Exuma International (GGT) | Exuma Islands | | Clearwater to Exuma International |
| Wokal Field/Glasgow International (GGW) | Glasgow | MT | Clearwater to Wokal Field/Glasgow International |
| Eleuthera Island/Governors Harbour Intl (GHB) | Eleuthera Island | | Clearwater to Eleuthera Island/Governors Harbour Intl |
| Great Harbour Cay (GHC) | Berry Islands | | Clearwater to Great Harbour Cay |
| Centerville Municipal (GHM) | Centerville | TN | Clearwater to Centerville Municipal |
| Winter Haven Regional (GIF) | Winter Haven | FL | Clearwater to Winter Haven Regional |
| Grand Junction Regional Walker Field (GJT) | Grand Junction | CO | Clearwater to Grand Junction Regional Walker Field |
| Geilenkirchen AB (GKE) | Geilenkirchen | | Clearwater to Geilenkirchen AB |
| Gulkana (GKN) | Gulkana | AK | Clearwater to Gulkana |
| Gatlinburg-Pigeon Forge (GKT) | Sevierville | TN | Clearwater to Gatlinburg-Pigeon Forge |
| Glasgow International (GLA) | Glasgow | | Clearwater to Glasgow International |
| San Carlos Apache (GLB) | Globe | AZ | Clearwater to San Carlos Apache |
| Renner Field/Goodland Municipal (GLD) | Goodland | KS | Clearwater to Renner Field/Goodland Municipal |
| Gainesville Municipal (GLE) | Gainesville | TX | Clearwater to Gainesville Municipal |
| Greenville Mid-Delta (GLH) | Greenville | MS | Clearwater to Greenville Mid-Delta |
| Gloucestershire (GLO) | Gloucester | | Clearwater to Gloucestershire |
| Gaylord Regional (GLR) | Gaylord | MI | Clearwater to Gaylord Regional |
| Scholes International at Galveston (GLS) | Galveston | TX | Clearwater to Scholes International at Galveston |
| Glasgow Municipal (GLW) | Glasgow | KY | Clearwater to Glasgow Municipal |
| Breda/Gilze-Rijen AB (GLZ) | Breda | | Clearwater to Breda/Gilze-Rijen AB |
| Greenville Downtown (GMU) | Greenville | SC | Clearwater to Greenville Downtown |
| Gansner Field (GNF) | Quincy | CA | Clearwater to Gansner Field |
| Gooding Municipal (GNG) | Gooding | ID | Clearwater to Gooding Municipal |
| Grants-Milan Municipal (GNT) | Grants | NM | Clearwater to Grants-Milan Municipal |
| Gainesville Regional (GNV) | Gainesville | FL | Clearwater to Gainesville Regional |
| Guthrie-Edmond Regional (GOK) | Guthrie | OK | Clearwater to Guthrie-Edmond Regional |
| Gold Beach Municipal (GOL) | Gold Beach | OR | Clearwater to Gold Beach Municipal |
| Groton New London (GON) | Groton New London | CT | Clearwater to Groton New London |
| Goteborg/Landvetter (GOT) | Gothenburg | | Clearwater to Goteborg/Landvetter |
| Gulfport-Biloxi International (GPT) | Gulfport | MS | Clearwater to Gulfport-Biloxi International |
| Grand Rapids/Itasca County-Gordon Newstrom Field (GPZ) | Grand Rapids | MN | Clearwater to Grand Rapids/Itasca County-Gordon Newstrom Field |
| Galion Municipal (GQQ) | Galion | OH | Clearwater to |
