Airport codes
Airport codes starting with O
305 airports in 82 countries have a three-letter IATA code beginning with O, including OAK (Oakland), OAX (Oaxaca), OCS (Corisco Island). The four-letter ICAO code is shown where an airport has one.
With a live cam on this site: OBO · OIT · OKA
| IATA | ICAO | Airport | City | Country |
|---|---|---|---|---|
| OAA | OASH | Shank Air BaseBaraki Barak | Baraki Barak | 🇦🇫 Afghanistan |
| OAG | YORG | Orange AirportOrange | Orange | 🇦🇺 Australia |
| OAH | OASD | Shindand Air BaseShindand | Shindand | 🇦🇫 Afghanistan |
| OAI | OAIX | Bagram AirfieldBagram | Bagram | 🇦🇫 Afghanistan |
| OAJ | KOAJ | Albert J Ellis AirportRichlands | Richlands | 🇺🇸 United States |
| OAK | KOAK | Oakland San Francisco Bay AirportOakland | Oakland | 🇺🇸 United States |
| OAL | SSKW | Cacoal AirportCacoal | Cacoal | 🇧🇷 Brazil |
| OAM | NZOU | Oamaru Airport | — | 🇳🇿 New Zealand |
| OAN | MHEA | El Arrayán AirportOlanchito | Olanchito | 🇭🇳 Honduras |
| OAR | KOAR | Marina Municipal AirportMarina | Marina | 🇺🇸 United States |
| OAS | OASA | Sharana AirstripSharana | Sharana | 🇦🇫 Afghanistan |
| OAX | MMOX | Xoxocotlán International AirportOaxaca | Oaxaca | 🇲🇽 Mexico |
| OAZ | OAZI | Camp Shorabak AirfieldLashkar Gah | Lashkar Gah | 🇦🇫 Afghanistan |
| OBA | YOBN | Oban AirportOban | Oban | 🇦🇺 Australia |
| OBC | HDOB | Obock AirportObock | Obock | 🇩🇯 Djibouti |
| OBD | — | Obano AirportObano | Obano | 🇮🇩 Indonesia |
| OBE | KOBE | Okeechobee County AirportOkeechobee | Okeechobee | 🇺🇸 United States |
| OBF | EDMO | Oberpfaffenhofen AirportWeßling | Weßling | 🇩🇪 Germany |
| OBI | SNTI | Óbidos Municipal AirportÓbidos | Óbidos | 🇧🇷 Brazil |
| OBL | EBZR | Oostmalle AirfieldZoersel | Zoersel | 🇧🇪 Belgium |
| OBM | AYMB | Morobe AirportMorobe | Morobe | 🇵🇬 Papua New Guinea |
| OBN | EGEO | Oban AirportNorth Connel | North Connel | 🇬🇧 United Kingdom |
| OBO | RJCB | Tokachi-Obihiro Airport Live camObihiro | Obihiro | 🇯🇵 Japan |
| OBS | LFHO | Aubenas-South Ardèche AirportLanas, Ardèche | Lanas, Ardèche | 🇫🇷 France |
| OBU | PAOB | Kobuk AirportKobuk | Kobuk | 🇺🇸 United States |
| OBX | AYOB | Obo AirportObo | Obo | 🇵🇬 Papua New Guinea |
| OBY | — | Ittoqqortoormiit HeliportIttoqqortoormiit | Ittoqqortoormiit | 🇬🇱 Greenland |
| OCA | — | Ocean Reef Club AirportKey Largo | Key Largo | 🇺🇸 United States |
| OCC | SECO | Francisco De Orellana AirportCoca | Coca | 🇪🇨 Ecuador |
| OCE | KOXB | Ocean City Municipal AirportOcean City | Ocean City | 🇺🇸 United States |
| OCF | KOCF | Ocala International Airport - Jim Taylor FieldOcala | Ocala | 🇺🇸 United States |
| OCH | KOCH | A L Mangham Jr. Regional AirportNacogdoches | Nacogdoches | 🇺🇸 United States |
| OCJ | MKBS | Ian Fleming International AirportBoscobel | Boscobel | 🇯🇲 Jamaica |
| OCM | YBGD | Boolgeeda | — | 🇦🇺 Australia |
| OCN | KOKB | Oceanside Municipal AirportOceanside | Oceanside | 🇺🇸 United States |
| OCS | FGCO | Corisco International AirportCorisco Island | Corisco Island | 🇬🇶 Equatorial Guinea |
| OCV | SKOC | Aguas Claras AirportOcaña | Ocaña | 🇨🇴 Colombia |
| OCW | KOCW | Warren FieldWashington | Washington | 🇺🇸 United States |
| ODA | FEFW | Ouadda AirportOuadda | Ouadda | 🇨🇫 Central African Republic |
| ODB | LEBA | Córdoba AirportCórdoba | Córdoba | 🇪🇸 Spain |
| ODC | — | Oakdale AirportOakdale | Oakdale | 🇺🇸 United States |
| ODD | YOOD | Oodnadatta Airport | — | 🇦🇺 Australia |
| ODE | EKOD | Odense Hans Christian Andersen AirportOdense | Odense | 🇩🇰 Denmark |
| ODH | EGVO | RAF OdihamHook, Hampshire | Hook, Hampshire | 🇬🇧 United Kingdom |
| ODJ | FEGO | Ouanda Djallé AirportOuanda Djallé | Ouanda Djallé | 🇨🇫 Central African Republic |
| ODL | YCOD | Cordillo Downs AirportCordillo Downs | Cordillo Downs | 🇦🇺 Australia |
| ODM | — | Garrett County AirportAccident | Accident | 🇺🇸 United States |
| ODN | WBGI | Long Seridan AirportLong Seridan | Long Seridan | 🇲🇾 Malaysia |
| ODO | UIKB | Bodaybo AirportBodaybo | Bodaybo | 🇷🇺 Russia |
| ODR | YORV | Ord River AirportOrd River | Ord River | 🇦🇺 Australia |
| ODS | UKOO | Odesa International AirportOdesa | Odesa | 🇺🇦 Ukraine |
| ODT | — | Odessa Schlemeyer FieldOdessa | Odessa | 🇺🇸 United States |
| ODW | KOKH | AJ Eisenberg AirportOak Harbor | Oak Harbor | 🇺🇸 United States |
| ODY | VLOS | Oudomsay AirportOudomsay | Oudomsay | 🇱🇦 Laos |
| OEA | — | O'Neal AirportLawrenceville | Lawrenceville | 🇺🇸 United States |
| OEC | WPOC | Oecusse Route of the Sandalwood International AirportOecussi-Ambeno | Oecussi-Ambeno | 🇹🇱 Timor-Leste |
| OEM | SMPA | Vincent Fayks AirportPaloemeu | Paloemeu | 🇸🇷 Suriname |
| OEO | KOEO | L O Simenstad Municipal AirportOsceola | Osceola | 🇺🇸 United States |
| OER | ESNO | Örnsköldsvik AirportÖrnsköldsvik | Örnsköldsvik | 🇸🇪 Sweden |
| OES | SAVN | Antoine de Saint Exupéry AirportSan Antonio Oeste | San Antonio Oeste | 🇦🇷 Argentina |
| OFF | KOFF | Offutt Air Force BaseOmaha | Omaha | 🇺🇸 United States |
| OFI | DIOF | Ouango Fitini AirportOuango Fitini | Ouango Fitini | 🇨🇮 Côte d’Ivoire |
| OFK | KOFK | Karl Stefan Memorial AirportNorfolk | Norfolk | 🇺🇸 United States |
| OFU | NSAS | Ofu AirportOfu | Ofu | 🇦🇸 American Samoa |
| OGA | KOGA | Ogallala Municipal Airport Searle FieldOgallala | Ogallala | 🇺🇸 United States |
| OGB | KOGB | Orangeburg Municipal AirportOrangeburg | Orangeburg | 🇺🇸 United States |
| OGD | KOGD | Ogden Hinckley AirportOgden | Ogden | 🇺🇸 United States |
| OGE | AYOG | Ogeranang Airport | — | 🇵🇬 Papua New Guinea |
| OGG | PHOG | Kahului International AirportKahului | Kahului | 🇺🇸 United States |
| OGL | SYEC | Eugene F. Correia International AirportOgle | Ogle | 🇬🇾 Guyana |
| OGM | — | Ogobsucum AirportUstupu | Ustupu | 🇵🇦 Panama |
| OGN | ROYN | Yonaguni AirportYonaguni | Yonaguni | 🇯🇵 Japan |
| OGO | DIAU | Abengourou AirportAbengourou | Abengourou | 🇨🇮 Côte d’Ivoire |
| OGR | FTTB | Bongor AirportBongor | Bongor | 🇹🇩 Chad |
| OGS | KOGS | Ogdensburg International AirportOgdensburg | Ogdensburg | 🇺🇸 United States |
| OGU | LTCB | Ordu–Giresun AirportOrdu | Ordu | 🇹🇷 Türkiye |
| OGX | DAUU | Ain Beida AirportOuargla | Ouargla | 🇩🇿 Algeria |
| OGZ | URMO | Vladikavkaz Beslan International AirportBeslan | Beslan | 🇷🇺 Russia |
| OHA | NZOH | RNZAF Base Ohakea | — | 🇳🇿 New Zealand |
| OHB | FMFE | Ambohibary AirportMoramanga | Moramanga | 🇲🇬 Madagascar |
| OHD | LWOH | Ohrid St. Paul the Apostle AirportOhrid | Ohrid | 🇲🇰 North Macedonia |
| OHE | ZYMH | Mohe Gulian AirportMohe | Mohe | 🇨🇳 China |
| OHH | UHSH | Okha AirportOkha | Okha | 🇷🇺 Russia |
| OHI | FYOS | Oshakati AirportOshakati | Oshakati | 🇳🇦 Namibia |
| OHO | UHOO | Okhotsk AirportOkhotsk | Okhotsk | 🇷🇺 Russia |
| OHR | EDXY | Wyk auf Föhr AirportWyk auf Föhr | Wyk auf Föhr | 🇩🇪 Germany |
| OHS | OOSH | Suhar International AirportSuhar | Suhar | 🇴🇲 Oman |
| OHT | OPKT | Kohat AirportKohat | Kohat | 🇵🇰 Pakistan |
| OIA | SDOW | Ourilândia do Norte AirportOurilândia do Norte | Ourilândia do Norte | 🇧🇷 Brazil |
| OIC | KOIC | Lt Warren Eaton AirportNorwich | Norwich | 🇺🇸 United States |
| OIM | RJTO | Oshima AirportIzu Oshima | Izu Oshima | 🇯🇵 Japan |
| OIR | RJEO | Okushiri AirportOkushiri Island | Okushiri Island | 🇯🇵 Japan |
| OIT | RJFO | Oita Airport Live camOita | Oita | 🇯🇵 Japan |
| OJC | KOJC | Johnson County Executive AirportOlathe | Olathe | 🇺🇸 United States |
| OJU | WAFU | Tanjung Api AirportTojo Una-Una | Tojo Una-Una | 🇮🇩 Indonesia |
| OKA | ROAH | Naha International Airport Live camNaha | Naha | 🇯🇵 Japan |
| OKB | YORC | Orchid Beach AirportOrchid Beach | Orchid Beach | 🇦🇺 Australia |
| OKC | KOKC | OKC Will Rogers World AirportOklahoma City | Oklahoma City | 🇺🇸 United States |
| OKD | RJCO | Sapporo Okadama AirportSapporo | Sapporo | 🇯🇵 Japan |
| OKE | RJKB | Okinoerabu AirportWadomari | Wadomari | 🇯🇵 Japan |
| OKF | FYOO | Okaukuejo AirportOkaukuejo | Okaukuejo | 🇳🇦 Namibia |
| OKG | — | Okoyo AirportOkoyo | Okoyo | 🇨🇬 Congo - Brazzaville |
| OKI | RJNO | Oki Global Geopark AirportOkinoshima | Okinoshima | 🇯🇵 Japan |
| OKJ | RJOB | Okayama Momotaro AirportOkayama | Okayama | 🇯🇵 Japan |
| OKK | KOKK | Kokomo Municipal AirportKokomo | Kokomo | 🇺🇸 United States |
| OKL | WAJO | Oksibil AirportOksibil | Oksibil | 🇮🇩 Indonesia |
| OKM | KOKM | Okmulgee Regional AirportOkmulgee | Okmulgee | 🇺🇸 United States |
| OKN | FOGQ | Okondja AirportOkondja | Okondja | 🇬🇦 Gabon |
| OKO | RJTY | Yokota Air BaseFussa | Fussa | 🇯🇵 Japan |
| OKP | AYOJ | Oksapmin AirportOksapmin | Oksapmin | 🇵🇬 Papua New Guinea |
| OKQ | WAKO | Okaba AirportOkaba | Okaba | 🇮🇩 Indonesia |
| OKR | YYKI | Yorke Island AirportYorke Island | Yorke Island | 🇦🇺 Australia |
| OKS | KOKS | Garden County Airport/King Rhiley FieldOshkosh | Oshkosh | 🇺🇸 United States |
| OKT | UWUK | Oktyabrskiy AirportKzyl-Yar | Kzyl-Yar | 🇷🇺 Russia |
| OKU | FYMO | Mokuti Lodge AirportMokuti Lodge | Mokuti Lodge | 🇳🇦 Namibia |
| OKV | AYOF | Okao AirportOkao | Okao | 🇵🇬 Papua New Guinea |
| OKY | YBOK | Oakey Army Aviation Centre | — | 🇦🇺 Australia |
| OLA | ENOL | Ørland AirportØrland | Ørland | 🇳🇴 Norway |
| OLB | LIEO | Olbia Costa Smeralda AirportOlbia (SS) | Olbia (SS) | 🇮🇹 Italy |
| OLC | SDCG | Senadora Eunice Micheles AirportSão Paulo De Olivença | São Paulo De Olivença | 🇧🇷 Brazil |
| OLD | KOLD | Dewitt Field - Old Town Municipal AirportOld Town | Old Town | 🇺🇸 United States |
| OLE | KOLE | Cattaraugus County-Olean AirportOlean | Olean | 🇺🇸 United States |
| OLF | KOLF | L M Clayton AirportWolf Point | Wolf Point | 🇺🇸 United States |
| OLG | — | Olare Orok AirfieldMara | Mara | 🇰🇪 Kenya |
| OLH | — | Old Harbor AirportOld Harbor | Old Harbor | 🇺🇸 United States |
| OLI | BIRF | Rif AirportRif | Rif | 🇮🇸 Iceland |
| OLJ | NVSZ | North West Santo AirportOlpoi | Olpoi | 🇻🇺 Vanuatu |
| OLK | SGOL | Fuerte Olimpo AirportFuerte Olimpo | Fuerte Olimpo | 🇵🇾 Paraguay |
| OLL | FCOD | Oyo Ollombo AirportOyo | Oyo | 🇨🇬 Congo - Brazzaville |
| OLM | KOLM | Olympia Regional AirportOlympia | Olympia | 🇺🇸 United States |
| OLN | SAVM | Lago Musters AirportSarmiento | Sarmiento | 🇦🇷 Argentina |
| OLO | LKOL | Olomouc AirportOlomouc | Olomouc | 🇨🇿 Czechia |
| OLP | YOLD | Olympic Dam AirportOlympic Dam | Olympic Dam | 🇦🇺 Australia |
| OLQ | AYOV | Olsobip AirportOlsobip | Olsobip | 🇵🇬 Papua New Guinea |
| OLR | OASL | Salerno AirportKhost | Khost | 🇦🇫 Afghanistan |
| OLS | KOLS | Nogales International AirportNogales | Nogales | 🇺🇸 United States |
| OLU | KOLU | Columbus Municipal AirportColumbus | Columbus | 🇺🇸 United States |
| OLV | KOLV | Olive Branch AirportOlive Branch | Olive Branch | 🇺🇸 United States |
| OLX | HKOK | Mara-Olkiombo AirportSerena | Serena | 🇰🇪 Kenya |
| OLY | KOLY | Olney Noble AirportOlney-Noble | Olney-Noble | 🇺🇸 United States |
| OLZ | UEMO | Olyokminsk AirportOlyokminsk | Olyokminsk | 🇷🇺 Russia |
| OMA | KOMA | Eppley AirfieldOmaha | Omaha | 🇺🇸 United States |
| OMB | FOOH | Omboue Hospital AirportOmboue | Omboue | 🇬🇦 Gabon |
| OMC | RPVO | Ormoc AirportOrmoc City | Ormoc City | 🇵🇭 Philippines |
| OMD | FYOG | Oranjemund AirportOranjemund | Oranjemund | 🇳🇦 Namibia |
| OME | PAOM | Nome AirportNome | Nome | 🇺🇸 United States |
| OMF | OJMF | King Hussein Air CollegeMafraq | Mafraq | 🇯🇴 Jordan |
| OMG | FYOE | Omega AirportOmega | Omega | 🇳🇦 Namibia |
| OMH | OITR | Urmia AirportUrmia | Urmia | 🇮🇷 Iran |
| OMI | OIAJ | Omidiyeh AirportOmidiyeh | Omidiyeh | 🇮🇷 Iran |
| OMJ | RJDU | JMSDF Omura Air BaseNagasaki | Nagasaki | 🇯🇵 Japan |
| OMK | KOMK | Omak AirportOmak | Omak | 🇺🇸 United States |
| OMM | OOMX | Marmul AirportMarmul | Marmul | 🇴🇲 Oman |
| OMN | UZTZ | Zomin AirportZomin | Zomin | 🇺🇿 Uzbekistan |
| OMO | LQMO | Mostar International AirportMostar | Mostar | 🇧🇦 Bosnia & Herzegovina |
| OMR | LROD | Oradea International AirportOradea | Oradea | 🇷🇴 Romania |
| OMS | UNOO | Omsk Central AirportOmsk | Omsk | 🇷🇺 Russia |
| OMY | — | Preah Vinhear AirportTbeng Meanchey | Tbeng Meanchey | 🇰🇭 Cambodia |
| ONA | KONA | Winona Municipal Airport Max Conrad FieldWinona | Winona | 🇺🇸 United States |
| ONB | AYQQ | Ononge AirportOnange Mission | Onange Mission | 🇵🇬 Papua New Guinea |
| OND | FYOA | Ondangwa AirportOndangwa | Ondangwa | 🇳🇦 Namibia |
| ONG | YMTI | Mornington Island Airport | — | 🇦🇺 Australia |
| ONH | — | Albert S Nader Regional AirportOneonta | Oneonta | 🇺🇸 United States |
| ONI | WABD | Moanamani AirportMoanamani | Moanamani | 🇮🇩 Indonesia |
| ONJ | RJSR | Odate Noshiro AirportKitaakita | Kitaakita | 🇯🇵 Japan |
| ONK | — | Olenyok AirportOlenyok | Olenyok | 🇷🇺 Russia |
| ONL | KONL | O'Neill Municipal Airport–John L Baker FieldO'Neill | O'Neill | 🇺🇸 United States |
| ONM | KONM | Socorro Municipal AirportSocorro | Socorro | 🇺🇸 United States |
| ONO | KONO | Ontario Municipal AirportOntario | Ontario | 🇺🇸 United States |
| ONP | KONP | Newport Municipal AirportNewport | Newport | 🇺🇸 United States |
| ONQ | LTAS | Zonguldak Çaycuma AirportZonguldak | Zonguldak | 🇹🇷 Türkiye |
| ONR | YMNK | Monkira Airport | — | 🇦🇺 Australia |
| ONS | YOLW | Onslow Airport | — | 🇦🇺 Australia |
| ONT | KONT | Ontario International AirportOntario | Ontario | 🇺🇸 United States |
| ONU | NFOL | Ono-i-Lau AirportOno-i-Lau | Ono-i-Lau | 🇫🇯 Fiji |
| ONX | MPEJ | Enrique Adolfo Jimenez AirportColón | Colón | 🇵🇦 Panama |
| ONY | KONY | Olney Municipal AirportOlney | Olney | 🇺🇸 United States |
| OOA | KOOA | Oskaloosa Municipal AirportCedar | Cedar | 🇺🇸 United States |
| OOD | — | Koodaideri Mine AirportKoodaideri Mine | Koodaideri Mine | 🇦🇺 Australia |
| OOK | PAOO | Toksook Bay AirportToksook Bay | Toksook Bay | 🇺🇸 United States |
| OOL | YBCG | Gold Coast AirportGold Coast | Gold Coast | 🇦🇺 Australia |
| OOM | YCOM | Cooma Snowy Mountains AirportCooma | Cooma | 🇦🇺 Australia |
| OOR | YMOO | Mooraberree Airport | — | 🇦🇺 Australia |
| OOT | NGON | Onotoa AirportOnotoa | Onotoa | 🇰🇮 Kiribati |
| OPA | BIKP | Kópasker AirportKópasker | Kópasker | 🇮🇸 Iceland |
| OPB | — | Open Bay AirportMaitanakunai | Maitanakunai | 🇵🇬 Papua New Guinea |
| OPF | KOPF | Miami-Opa Locka Executive AirportMiami | Miami | 🇺🇸 United States |
| OPI | YOEN | Oenpelli Airport | — | 🇦🇺 Australia |
| OPL | KOPL | St Landry Parish Ahart FieldOpelousas | Opelousas | 🇺🇸 United States |
| OPO | LPPR | Francisco de Sá Carneiro AirportPorto | Porto | 🇵🇹 Portugal |
| OPP | SNSM | Salinópolis AirportSalinópolis | Salinópolis | 🇧🇷 Brazil |
| OPS | SBSI | Presidente João Batista Figueiredo AirportSinop | Sinop | 🇧🇷 Brazil |
| OPU | AYBM | Balimo AirportBalimo | Balimo | 🇵🇬 Papua New Guinea |
| OPW | FYOP | Opuwa AirportOpuwa | Opuwa | 🇳🇦 Namibia |
| OQN | UZKK | Kokand AirportKokand | Kokand | 🇺🇿 Uzbekistan |
| ORA | SASO | Orán AirportOrán | Orán | 🇦🇷 Argentina |
| ORB | ESOE | Örebro AirportÖrebro | Örebro | 🇸🇪 Sweden |
| ORC | SKOE | Orocue AirportOrocue | Orocue | 🇨🇴 Colombia |
| ORD | KORD | Chicago O'Hare International AirportChicago | Chicago | 🇺🇸 United States |
| ORE | LFOZ | Orléans–Saint-Denis-de-l'Hôtel AirportSaint-Denis-de-l'Hôtel, Loiret | Saint-Denis-de-l'Hôtel, Loiret | 🇫🇷 France |
| ORF | KORF | Norfolk International AirportNorfolk | Norfolk | 🇺🇸 United States |
| ORG | SMZO | Zorg en Hoop AirportParamaribo | Paramaribo | 🇸🇷 Suriname |
| ORH | KORH | Worcester Regional AirportWorcester | Worcester | 🇺🇸 United States |
| ORI | — | Port Lions AirportPort Lions | Port Lions | 🇺🇸 United States |
| ORJ | SYOR | Orinduik AirportOrinduik | Orinduik | 🇬🇾 Guyana |
| ORK | EICK | Cork International AirportCork | Cork | 🇮🇪 Ireland |
| ORL | KORL | Orlando Executive AirportOrlando | Orlando | 🇺🇸 United States |
| ORM | EGBK | Sywell AerodromeNorthampton, Northamptonshire | Northampton, Northamptonshire | 🇬🇧 United Kingdom |
| ORN | DAOO | Oran Es-Sénia (Ahmed Ben Bella) International AirportEs-Sénia | Es-Sénia | 🇩🇿 Algeria |
| ORO | MHYR | Yoro AirportYoro | Yoro | 🇭🇳 Honduras |
| ORP | FBOR | Orapa AirportOrapa | Orapa | 🇧🇼 Botswana |
| ORR | YYOR | Yorketown Airport | — | 🇦🇺 Australia |
| ORT | PAOR | Northway AirportNorthway | Northway | 🇺🇸 United States |
| ORU | SLOR | Juan Mendoza International AirportOruro | Oruro | 🇧🇴 Bolivia |
| ORV | PFNO | Robert (Bob) Curtis Memorial AirportNoorvik | Noorvik | 🇺🇸 United States |
| ORW | OPOR | Ormara AirportOrmara Raik | Ormara Raik | 🇵🇰 Pakistan |
| ORX | SNOX | Oriximiná AirportOriximiná | Oriximiná | 🇧🇷 Brazil |
| ORY | LFPO | Paris-Orly AirportParis (Orly, Val-de-Marne) | Paris (Orly, Val-de-Marne) | 🇫🇷 France |
| ORZ | MZTH | H.E Alfredo Martinez (Tower Hill) AirstripOrange Walk | Orange Walk | 🇧🇿 Belize |
| OSB | — | Grand Glaize Osage Beach AirportOsage Beach | Osage Beach | 🇺🇸 United States |
| OSC | KOSC | Oscoda Wurtsmith AirportOscoda | Oscoda | 🇺🇸 United States |
| OSD | ESNZ | Åre Östersund AirportÖstersund | Östersund | 🇸🇪 Sweden |
| OSE | AYOM | Omora AirportOmora | Omora | 🇵🇬 Papua New Guinea |
| OSG | AYZS | Ossima AirportOssima | Ossima | 🇵🇬 Papua New Guinea |
| OSH | KOSH | Wittman Regional AirportOshkosh | Oshkosh | 🇺🇸 United States |
| OSI | LDOS | Osijek AirportOsijek(Klisa) | Osijek(Klisa) | 🇭🇷 Croatia |
| OSJ | HKOY | Ol Seki Naboisho AirstripMara Simba | Mara Simba | 🇰🇪 Kenya |
| OSK | ESMO | Oskarshamn AirportOskarshamn | Oskarshamn | 🇸🇪 Sweden |
| OSL | ENGM | Oslo-Gardermoen International AirportOslo (Gardermoen) | Oslo (Gardermoen) | 🇳🇴 Norway |
| OSM | ORBM | Mosul International AirportMosul | Mosul | 🇮🇶 Iraq |
| OSN | RKSO | Osan Air BasePyeongtaek | Pyeongtaek | 🇰🇷 South Korea |
| OSO | YOSB | Osborne Mine Airport | — | 🇦🇺 Australia |
| OSR | LKMT | Leoš Janáček Airport OstravaMošnov | Mošnov | 🇨🇿 Czechia |
| OSS | UCFO | Osh International AirportOsh | Osh | 🇰🇬 Kyrgyzstan |
| OST | EBOS | Ostend-Bruges International AirportOostende | Oostende | 🇧🇪 Belgium |
| OSU | KOSU | The Ohio State University Airport - Don Scott FieldColumbus | Columbus | 🇺🇸 United States |
| OSW | UWOR | Orsk AirportOrsk | Orsk | 🇷🇺 Russia |
| OSX | KOSX | Kosciusko Attala County AirportKosciusko | Kosciusko | 🇺🇸 United States |
| OSY | ENNM | Namsos AirportNamsos | Namsos | 🇳🇴 Norway |
| OTC | FTTL | Bol-Berim AirportBol | Bol | 🇹🇩 Chad |
| OTD | MPRA | Raul Arias Espinoza AirportContadora Island | Contadora Island | 🇵🇦 Panama |
| OTG | KOTG | Worthington Municipal AirportWorthington | Worthington | 🇺🇸 United States |
| OTH | KOTH | Southwest Oregon Regional AirportNorth Bend | North Bend | 🇺🇸 United States |
| OTI | — | Pitu AirportGotalalamo-Morotai Island | Gotalalamo-Morotai Island | 🇮🇩 Indonesia |
| OTJ | FYOW | Otjiwarongo AirportOtjiwarongo | Otjiwarongo | 🇳🇦 Namibia |
| OTK | KTMK | Tillamook AirportTillamook | Tillamook | 🇺🇸 United States |
| OTL | GQNB | Boutilimit AirportBoutilimit | Boutilimit | 🇲🇷 Mauritania |
| OTM | KOTM | Ottumwa Regional AirportOttumwa | Ottumwa | 🇺🇸 United States |
| OTN | — | Ed-Air AirportOaktown | Oaktown | 🇺🇸 United States |
| OTO | — | Otog Banner Wulan AirportWulan | Wulan | 🇨🇳 China |
| OTP | LROP | Bucharest Henri Coandă International AirportOtopeni | Otopeni | 🇷🇴 Romania |
| OTQ | — | Otog Front Banner Oljoq AirportOtog Front Banner | Otog Front Banner | 🇨🇳 China |
| OTR | MRCC | Coto 47 AirportCorredores | Corredores | 🇨🇷 Costa Rica |
| OTS | — | Anacortes AirportAnacortes | Anacortes | 🇺🇸 United States |
| OTT | — | Andre Maggi AirportCotriguaçu | Cotriguaçu | 🇧🇷 Brazil |
| OTU | SKOT | Otu AirportRemedios | Remedios | 🇨🇴 Colombia |
| OTZ | PAOT | Ralph Wien Memorial AirportKotzebue | Kotzebue | 🇺🇸 United States |
| OUA | DFFD | Ouagadougou Thomas Sankara International AirportOuagadougou | Ouagadougou | 🇧🇫 Burkina Faso |
| OUD | GMFO | Oujda Angads AirportAhl Angad | Ahl Angad | 🇲🇦 Morocco |
| OUE | FCOU | Ouesso Airport | — | 🇨🇬 Congo - Brazzaville |
| OUG | DFCC | Ouahigouya AirportOuahigouya | Ouahigouya | 🇧🇫 Burkina Faso |
| OUH | FAOH | Oudtshoorn AirportOudtshoorn | Oudtshoorn | 🇿🇦 South Africa |
| OUI | LFEC | Ouessant AirportUshant | Ushant | 🇫🇷 France |
| OUL | EFOU | Oulu AirportOulu / Oulunsalo | Oulu / Oulunsalo | 🇫🇮 Finland |
| OUM | — | Oum Hadjer AirportOum Hadjer | Oum Hadjer | 🇹🇩 Chad |
| OUN | KOUN | University of Oklahoma Westheimer AirportNorman | Norman | 🇺🇸 United States |
| OUR | FKKI | Batouri AirportBatouri | Batouri | 🇨🇲 Cameroon |
| OUS | SDOU | Jornalista Benedito Pimentel AirportOurinhos | Ourinhos | 🇧🇷 Brazil |
| OUT | FTTS | Bousso AirportBousso | Bousso | 🇹🇩 Chad |
| OUZ | GQPZ | Tazadit AirportZouérate | Zouérate | 🇲🇷 Mauritania |
| OVA | FMSL | Bekily AirportBekily | Bekily | 🇲🇬 Madagascar |
| OVB | UNNT | Novosibirsk Tolmachevo AirportNovosibirsk | Novosibirsk | 🇷🇺 Russia |
| OVD | LEAS | Asturias AirportRanón | Ranón | 🇪🇸 Spain |
| OVE | KOVE | Oroville Municipal AirportOroville | Oroville | 🇺🇸 United States |
| OVG | FAOB | Overberg AirportOverberg | Overberg | 🇿🇦 South Africa |
| OVL | SCOV | El Tuqui AirportOvalle | Ovalle | 🇨🇱 Chile |
| OVR | SAZF | Olavarria AirportOlavarria | Olavarria | 🇦🇷 Argentina |
| OVS | USHS | Sovetskiy AirportSovetskiy | Sovetskiy | 🇷🇺 Russia |
| OWA | KOWA | Owatonna Degner Regional AirportOwatonna | Owatonna | 🇺🇸 United States |
| OWB | KOWB | Owensboro Daviess County AirportOwensboro | Owensboro | 🇺🇸 United States |
| OWD | KOWD | Norwood Memorial AirportNorwood | Norwood | 🇺🇸 United States |
| OWK | KOWK | Central Maine/Norridgewock AirportNorridgewock | Norridgewock | 🇺🇸 United States |
| OXB | GGOV | Osvaldo Vieira International AirportBissau | Bissau | 🇬🇼 Guinea-Bissau |
| OXC | KOXC | Waterbury Oxford AirportOxford | Oxford | 🇺🇸 United States |
| OXD | KOXD | Miami University AirportOxford | Oxford | 🇺🇸 United States |
| OXF | EGTK | London Oxford AirportKidlington, Oxfordshire | Kidlington, Oxfordshire | 🇬🇧 United Kingdom |
| OXO | — | Orientos AirportOrientos | Orientos | 🇦🇺 Australia |
| OXR | KOXR | Oxnard AirportOxnard | Oxnard | 🇺🇸 United States |
| OXY | YMNY | Morney Airport | — | 🇦🇺 Australia |
| OYA | SATG | Goya AirportGoya | Goya | 🇦🇷 Argentina |
| OYC | — | Camopi AirportCamopi | Camopi | 🇬🇫 French Guiana |
| OYE | FOGO | Oyem AirportOyem | Oyem | 🇬🇦 Gabon |
| OYG | — | Moyo AirportMoyo | Moyo | 🇺🇬 Uganda |
| OYK | SBOI | Oiapoque AirportOiapoque | Oiapoque | 🇧🇷 Brazil |
| OYL | HKMY | Moyale AirportMoyale | Moyale | 🇰🇪 Kenya |
| OYN | YOUY | Ouyen AirportOuyen | Ouyen | 🇦🇺 Australia |
| OYO | SAZH | Tres Arroyos AirportTres Arroyos | Tres Arroyos | 🇦🇷 Argentina |
| OYP | SOOG | Saint-Georges-de-l'Oyapock AirportSaint-Georges-de-l'Oyapock | Saint-Georges-de-l'Oyapock | 🇬🇫 French Guiana |
| OZA | KOZA | Ozona Municipal AirportOzona | Ozona | 🇺🇸 United States |
| OZC | RPMO | Labo AirportOzamiz | Ozamiz | 🇵🇭 Philippines |
| OZG | GMAZ | Zagora AirportZagora | Zagora | 🇲🇦 Morocco |
| OZH | UKDE | Zaporizhzhia International AirportZaporizhia | Zaporizhia | 🇺🇦 Ukraine |
| OZP | LEMO | Moron Air BaseMorón | Morón | 🇪🇸 Spain |
| OZR | KOZR | Cairns AAF (Fort Rucker) Air FieldFort Rucker/Ozark | Fort Rucker/Ozark | 🇺🇸 United States |
| OZZ | GMMZ | Ouarzazate International AirportOuarzazate | Ouarzazate | 🇲🇦 Morocco |
Airport data from OurAirports (public domain), updated 2026-11-10. See how airport codes work.