| ART | KART | Watertown International Airport | Watertown | |
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| ATY | KATY | Watertown Regional Airport | Watertown | |
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| AUW | KAUW | Wausau Downtown Airport | Wausau | |
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| TBN | KTBN | Waynesville-St. Robert Regional Forney field | Fort Leonard Wood | |
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| ENV | KENV | Wendover Airport | Wendover | |
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| WWR | KWWR | West Woodward Airport | Woodward | |
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| HPN | KHPN | Westchester County Airport | Westchester County | |
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| BFF | KBFF | Western Neb. Rgnl/William B. Heilig Airport | Scottsbluff | |
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| CEF | KCEF | Westover ARB/Metropolitan Airport | Chicopee | |
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| HHI | PHHI | Wheeler Army Airfield | Wahiawa | |
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| HLG | KHLG | Wheeling Ohio County Airport | Wheeling | |
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| NSE | KNSE | Whiting Field Naval Air Station - North | Milton | |
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| BRW | PABR | Wiley Post Will Rogers Memorial Airport | Barrow | |
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| AVP | KAVP | Wilkes Barre Scranton International Airport | Wilkes-Barre | |
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| CLM | KCLM | William R Fairchild International Airport | Port Angeles | |
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| IPT | KIPT | Williamsport Regional Airport | Williamsport | |
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| YIP | KYIP | Willow Run Airport | - | |
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| ILN | KILN | Wilmington Airpark | Wilmington | |
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| ILM | KILM | Wilmington International Airport | Wilmington | |
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| INK | KINK | Winkler County Airport | Wink | |
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| WMC | KWMC | Winnemucca Municipal Airport | Winnemucca | |
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| INW | KINW | Winslow Lindbergh Regional Airport | Winslow | |
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| OSH | KOSH | Wittman Regional Airport | Oshkosh | |
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| GGW | KGGW | Wokal Field Glasgow International Airport | Glasgow | |
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| ORH | KORH | Worcester Regional Airport | Wooster | |
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| WRL | KWRL | Worland Municipal Airport | Worland | |
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| WRG | PAWG | Wrangell Airport | Wrangell | |
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| YKM | KYKM | Yakima Air Terminal McAllister Field | Yakima | |
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| YAK | PAYA | Yakutat Airport | Yakutat | |
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| WYS | KWYS | Yellowstone Airport | West Yellowstone | |
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| COD | KCOD | Yellowstone Regional Airport | Cody | |
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| DWA | KDWA | Yolo County Davis Woodland Winters Airport | - | |
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| YNG | KYNG | Youngstown Warren Regional Airport | Youngstown | |
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| MYV | KMYV | Yuba County Airport | Marysville | |
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| YUM | KNYL | Yuma MCAS/Yuma International Airport | Yuma | |
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| ZZV | KZZV | Zanesville Municipal Airport | Zanesville | |
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| ADS | KADS | Addison Airport | - | |
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| AIK | KAIK | Aiken Municipal Airport | Aiken | |
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| AKK | PAKH | Akhiok Airport | Akhiok | |
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| AKI | PFAK | Akiak Airport | Akiak | |
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| AUK | PAUK | Alakanuk Airport | Alakanuk | |
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| ISW | KISW | Alexander Field South Wood County Airport | Wisconsin Rapids | |
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| AET | PFAL | Allakaket Airport | Allakaket | |
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| AIA | KAIA | Alliance Municipal Airport | Alliance | |
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| ARB | KARB | Ann Arbor Municipal Airport | Ann Arbor | |
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| AAF | KAAF | Apalachicola Regional Airport | Apalachicola | |
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| ATW | KATW | Appleton International Airport | Appleton | |
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| RKP | KRKP | Aransas County Airport | Rockport | |
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| ADM | KADM | Ardmore Municipal Airport | Ardmore | |
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| AKB | PAAK | Atka Airport | Atka | |
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