| California Redwood Coast-Humboldt County (ACV) | Arcata | CA | Siskiyou County to California Redwood Coast-Humboldt County |
| Walla Walla Regional (ALW) | Walla Walla | WA | Siskiyou County to Walla Walla Regional |
| Napa County (APC) | Napa | CA | Siskiyou County to Napa County |
| Austin (ASQ) | Austin | NV | Siskiyou County to Austin |
| Astoria Regional (AST) | Astoria | OR | Siskiyou County to Astoria Regional |
| Auburn Municipal (AUN) | Auburn | CA | Siskiyou County to Auburn Municipal |
| Battle Mountain (BAM) | Battle Mountain | NV | Siskiyou County to Battle Mountain |
| Bandon State (BDY) | Bandon | OR | Siskiyou County to Bandon State |
| King County International Boeing Field (BFI) | Seattle | WA | Siskiyou County to King County International Boeing Field |
| Bishop Regional (BIH) | Bishop | CA | Siskiyou County to Bishop Regional |
| Baker City Municipal (BKE) | Baker City | OR | Siskiyou County to Baker City Municipal |
| Blue Canyon - Nyack (BLU) | Emigrant Gap | CA | Siskiyou County to Blue Canyon - Nyack |
| Burns Municipal (BNO) | Burns | OR | Siskiyou County to Burns Municipal |
| Boise Air Terminal Gowen Field (BOI) | Boise | ID | Siskiyou County to Boise Air Terminal Gowen Field |
| Brookings Airport (BOK) | Brookings | OR | Siskiyou County to Brookings Airport |
| Buchanan Field (CCR) | Concord | CA | Siskiyou County to Buchanan Field |
| Del Norte Co Regional/Jack Mcnamara Field (CEC) | Crescent City | CA | Siskiyou County to Del Norte Co Regional/Jack Mcnamara Field |
| Chiloquin State (CHZ) | Chiloquin | OR | Siskiyou County to Chiloquin State |
| Chico Municipal (CIC) | Chico | CA | Siskiyou County to Chico Municipal |
| Chehalis-Centralia (CLS) | Chehalis | WA | Siskiyou County to Chehalis-Centralia |
| Columbia (COA) | Columbia | CA | Siskiyou County to Columbia |
| Carson City (CSN) | Carson City | NV | Siskiyou County to Carson City |
| Corvallis Municipal (CVO) | Corvallis | OR | Siskiyou County to Corvallis Municipal |
| The Dalles Municipal/Columbia Gorge Regional (DLS) | The Dalles | OR | Siskiyou County to The Dalles Municipal/Columbia Gorge Regional |
| Eureka/Murray Field (EKA) | Eureka | CA | Siskiyou County to Eureka/Murray Field |
| Elko Regional/Harris Field (EKO) | Elko | NV | Siskiyou County to Elko Regional/Harris Field |
| Bowers Field (ELN) | Ellensburg | WA | Siskiyou County to Bowers Field |
| Eureka (EUE) | Eureka | NV | Siskiyou County to Eureka |
| Mahlon Sweet Field (EUG) | Eugene | OR | Siskiyou County to Mahlon Sweet Field |
| Yerington Municipal (EYR) | Yerington | NV | Siskiyou County to Yerington Municipal |
| Fresno Yosemite International (FAT) | Fresno | CA | Siskiyou County to Fresno Yosemite International |
| Fresno Chandler Executive (FCH) | Fresno | CA | Siskiyou County to Fresno Chandler Executive |
| Fallon Municipal (FLX) | Fallon | NV | Siskiyou County to Fallon Municipal |
| Gansner Field (GNF) | Quincy | CA | Siskiyou County to Gansner Field |
| Gooding Municipal (GNG) | Gooding | ID | Siskiyou County to Gooding Municipal |
| Gold Beach Municipal (GOL) | Gold Beach | OR | Siskiyou County to Gold Beach Municipal |
| Grants Pass (GTP) | Grants Pass | OR | Siskiyou County to Grants Pass |
| Half Moon Bay (HAF) | Half Moon Bay | CA | Siskiyou County to Half Moon Bay |
| Hermiston Municipal (HES) | Hermiston | OR | Siskiyou County to Hermiston Municipal |
| Portland/Hillsboro (HIO) | Portland | OR | Siskiyou County to Portland/Hillsboro |
| Hollister Municipal (HLI) | Hollister | CA | Siskiyou County to Hollister Municipal |
| Bowerman (HQM) | Hoquiam | WA | Siskiyou County to Bowerman |
| Hawthorne Industrial (HTH) | Hawthorne | NV | Siskiyou County to Hawthorne Industrial |
| Hayward Executive (HWD) | Hayward | CA | Siskiyou County to Hayward Executive |
| Cascade (ICS) | Cascade | ID | Siskiyou County to Cascade |
| Grant County Regional/Ogilvie Field (JDA) | John Day | OR | Siskiyou County to Grant County Regional/Ogilvie Field |
| Mesa Del Rey (KIC) | King City | CA | Siskiyou County to Mesa Del Rey |
| Southwest Washington Regional (KLS) | Kelso | WA | Siskiyou County to Southwest Washington Regional |
| La Grande/Union County (LGD) | La Grande | OR | Siskiyou County to La Grande/Union County |
| Lake County (LKV) | Lakeview | OR | Siskiyou County to Lake County |
| Crater Lake-Klamath Regional (LMT) | Klamath Falls | OR | Siskiyou County to Crater Lake-Klamath Regional |
| Derby Field (LOL) | Lovelock | NV | Siskiyou County to Derby Field |
| Los Banos Municipal (LSN) | Los Banos | CA | Siskiyou County to Los Banos Municipal |
| Livermore Municipal (LVK) | Livermore | CA | Siskiyou County to Livermore Municipal |
| Wells Municipal/Harriet Field (LWL) | Wells | NV | Siskiyou County to Wells Municipal/Harriet Field |
| Madera Municipal (MAE) | Madera | CA | Siskiyou County to Madera Municipal |
| Mc Clellan (MCC) | Sacramento | CA | Siskiyou County to Mc Clellan |
| Merced Regional/ Macready Field (MCE) | Merced | CA | Siskiyou County to Merced Regional/ Macready Field |
| Madras Municipal (MDJ) | Madras | OR | Siskiyou County to Madras Municipal |
| Castle (MER) | Merced | CA | Siskiyou County to Castle |
| Minden-Tahoe (MEV) | Minden | NV | Siskiyou County to Minden-Tahoe |
| Medford/Rogue Valley International (MFR) | Medford | OR | Siskiyou County to Medford/Rogue Valley International |
| Sacramento Mather (MHR) | Sacramento | CA | Siskiyou County to Sacramento Mather |
| Mammoth Yosemite (MMH) | Mammoth Lakes | CA | Siskiyou County to Mammoth Yosemite |
| Modesto City-County/Harry Sham Field (MOD) | Modesto | CA | Siskiyou County to Modesto City-County/Harry Sham Field |
| Monterey Regional (MRY) | Monterey | CA | Siskiyou County to Monterey Regional |
| Mccall Municipal (MYL) | Mc Call | ID | Siskiyou County to Mccall Municipal |
| Yuba County (MYV) | Marysville | CA | Siskiyou County to Yuba County |
| Gnoss Field (NOT) | Novato | CA | Siskiyou County to Gnoss Field |
| Nervino (NVN) | Beckwourth | CA | Siskiyou County to Nervino |
| Metropolitan Oakland International (OAK) | Oakland | CA | Siskiyou County to Metropolitan Oakland International |
| Marina Municipal (OAR) | Marina | CA | Siskiyou County to Marina Municipal |
| Oakdale (ODC) | Oakdale | CA | Siskiyou County to Oakdale |
| Olympia Regional (OLM) | Olympia | WA | Siskiyou County to Olympia Regional |
| Ontario Municipal (ONO) | Ontario | OR | Siskiyou County to Ontario Municipal |
| Newport Municipal (ONP) | Newport | OR | Siskiyou County to Newport Municipal |
| Southwest Oregon Regional (OTH) | North Bend | OR | Siskiyou County to Southwest Oregon Regional |
| Tillamook (OTK) | Tillamook | OR | Siskiyou County to Tillamook |
| Oroville Municipal (OVE) | Oroville | CA | Siskiyou County to Oroville Municipal |
| Palo Alto (PAO) | Palo Alto | CA | Siskiyou County to Palo Alto |
| Eastern Oregon Regional Pendleton (PDT) | Pendleton | OR | Siskiyou County to Eastern Oregon Regional Pendleton |
| Portland International (PDX) | Portland | OR | Siskiyou County to Portland International |
| Prineville (PRZ) | Prineville | OR | Siskiyou County to Prineville |
| Tri-Cities (PSC) | Pasco | WA | Siskiyou County to Tri-Cities |
| Placerville (PVF) | Placerville | CA | Siskiyou County to Placerville |
| Bremerton National (PWT) | Bremerton | WA | Siskiyou County to Bremerton National |
| Roseburg Regional (RBG) | Roseburg | OR | Siskiyou County to Roseburg Regional |
| Red Bluff Municipal (RBL) | Red Bluff | CA | Siskiyou County to Red Bluff Municipal |
| Redding Municipal (RDD) | Redding | CA | Siskiyou County to Redding Municipal |
| Roberts Field (RDM) | Redmond | OR | Siskiyou County to Roberts Field |
| Reid-Hillview of Santa Clara County (RHV) | San Jose | CA | Siskiyou County to Reid-Hillview of Santa Clara County |
| Richland (RLD) | Richland | WA | Siskiyou County to Richland |
| Mariposa-Yosemite (RMY) | Mariposa | CA | Siskiyou County to Mariposa-Yosemite |
| Reno-Tahoe International (RNO) | Reno | NV | Siskiyou County to Reno-Tahoe International |
| Renton Municipal (RNT) | Renton | WA | Siskiyou County to Renton Municipal |
| Sacramento Executive (SAC) | Sacramento | CA | Siskiyou County to Sacramento Executive |
| Stockton Metropolitan (SCK) | Stockton | CA | Siskiyou County to Stockton Metropolitan |
| Seattle Tacoma International (SEA) | Seattle | WA | Siskiyou County to Seattle Tacoma International |
| San Francisco International (SFO) | San Francisco | CA | Siskiyou County to San Francisco International |
| Sanderson Field (SHN) | Shelton | WA | Siskiyou County to Sanderson Field |
| Norman Y Mineta San Jose International (SJC) | San Jose | CA | Siskiyou County to Norman Y Mineta San Jose International |
| Salem Municipal/Mcnary Field (SLE) | Salem | OR | Siskiyou County to Salem Municipal/Mcnary Field |
| Sacramento International (SMF) | Sacramento | CA | Siskiyou County to Sacramento International |
| Salinas Municipal (SNS) | Salinas | CA | Siskiyou County to Salinas Municipal |
| San Carlos (SQL) | San Carlos | CA | Siskiyou County to San Carlos |
| Charles M Schulz - Sonoma County (STS) | Santa Rosa | CA | Siskiyou County to Charles M Schulz - Sonoma County |
| Sunriver (SUO) | Sunriver | OR | Siskiyou County to Sunriver |
| Susanville Municipal (SVE) | Susanville | CA | Siskiyou County to Susanville Municipal |
| Ed Carlson Memorial Field - South Lewis County (TDO) | Toledo | WA | Siskiyou County to Ed Carlson Memorial Field - South Lewis County |
| Tacoma Narrows (TIW) | Tacoma | WA | Siskiyou County to Tacoma Narrows |
| Truckee-Tahoe (TKF) | Truckee | CA | Siskiyou County to Truckee-Tahoe |
| Tonopah (TPH) | Tonopah | NV | Siskiyou County to Tonopah |
| Portland/Troutdale (TTD) | Portland | OR | Siskiyou County to Portland/Troutdale |
| Lake Tahoe Airport (TVL) | South Lake Tahoe | CA | Siskiyou County to Lake Tahoe Airport |
| Ukiah Municipal (UKI) | Ukiah | CA | Siskiyou County to Ukiah Municipal |
| Willows-Glenn County (WLW) | Willows | CA | Siskiyou County to Willows-Glenn County |
| Winnemucca Municipal (WMC) | Winnemucca | NV | Siskiyou County to Winnemucca Municipal |
| Watsonville Municipal (WVI) | Watsonville | CA | Siskiyou County to Watsonville Municipal |
| Yakima Air Terminal/Mcallister Field (YKM) | Yakima | WA | Siskiyou County to Yakima Air Terminal/Mcallister Field |
