A
- Aberdeen
- Aberdeen Proving Grounds
- Abilene
- Abingdon
- Ada
- Adak
- Adrian
- Ainsworth
- Akron
- Akron-Canton Regional Airport
- Alabaster
- Alamosa
- Albany
- Albany County Airport
- Albemarle
- Albert Lea Automatic Weather
- Albuquerque Intl Airport
- Alexandria
- Alexandria, Alexandria Esler Regional Airport
- Alexandria, Chandler Field
- Allentown, Lehigh Valley International Airport
- Alliance
- Alma
- Alpena
- Alton
- Altoona
- Amarillo
- Ambler
- Anaktuvuk Pass
- Anchorage Elmendorf
- Anchorage International Airport
- Anderson
- Anderson
- Andover
- Aniak
- Annapolis, United States Naval Academy
- Ann Arbor Municipal Airport
- Annette Island
- Anniston
- Apalachicola
- Appleton / Outagamie
- Arcata / Eureka, Arcata Airport
- Arctic Village
- Ardmore
- Asheville
- Ashland, Kennedy Memorial Airport
- Ashtabula County Airport
- Aspen-Pitken County Airport
- Astoria
- Athens Airport
- Atlanta Dekalb
- Atlanta Fulton County
- Atlanta International Airport
- Atlanta Peachtree City
- Atlantic City Intl Airport
- Auburn
- Auburn-Lewiston
- Augusta
- Augusta, Bush Field
- Augusta Daniel Field
- Aurora
- Aurora, Buckley Field
- Austin
- Austin City, Austin Camp Mabry
- Avalon
