[list of airports by iata code: a \- A] - AR
- ARA (KARA) – Acadiana Regional Airport – New Iberia, Louisiana, United States
- ARB (KARB) – Ann Arbor Municipal Airport – Ann Arbor, Michigan, United States
- ARB (FARB) – Richards Bay Airport – Richards Bay, South Africa
- ARC (PARC) – Arctic Village Airport – Arctic Village, Alaska, United States
- ARD – Alor Island Airport – Alor Island, Indonesia
- ARF – Acaricuara Airport – Acaricuara, Colombia
- ARG (KARG) – Walnut Ridge Regional Airport – Walnut Ridge, Arkansas, United States
- ARH (ULAA) – Talagi Airport – Arkhangelsk, Russia
- ARI (SCAR) – Chacalluta International Airport – Arica, Chile
- ARJ (WAJA) – Arso Airport – Arso, Indonesia
- ARK (HTAR) – Arusha Airport – Arusha, Tanzania
- ARL – Arly Airport – Arly, Burkina Faso
- ARM (KARM) – Wharton Regional Airport – Wharton, Texas, United States
- ARM (YARM) – Armidale Airport – Armidale, New South Wales, Australia
- ARN (ESSA) – Arlanda Airport – Stockholm, Sweden
- ARO – Arboletas Airport – Arboletas, Colombia
- ARP – Aragip Airport – Aragip, Papua New Guinea
- ARQ – Arauquita Airport – Arauquita, Colombia
- ARR (KARR) – Aurora Municipal Airport – Chicago/Aurora, Illinois, United States
- ARR (SAVR) – Alto Rio Senguerr Airport – Alto Rio Senguerr, Chubut, Argentina
- ARS – Aragarcas Airport – Aragarcas, Brazil
- ART (KART) – Watertown International Airport – Watertown, New York, United States
- ARU (SBAU) – Aracatuba Airport – Araçatuba, São Paulo, Brazil
- ARV (KARV) – Lakeland/Noble F. Lee Memorial Field – Minocqua/Woodruff, Wisconsin, United States
- ARW (LRAR) – Arad International Airport – Arad, Romania
- ARY (YARA) – Ararat Airport – Ararat, Victoria, Australia
- ARZ (FNZE) – N'Zeto Airport – N'Zeto, Angola
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