All airports by letter O
| Airport name | Country | Town | ICAO | IATA | FAA |
|---|---|---|---|---|---|
| Öamtc |  Austria | Wiener Neustadt | |||
| Öamtc | Austria | Aspern | |||
| Öamtc | Austria | Nikolsdorf | LOKQ | ||
| Öamtc | Austria | Zams | |||
| Ölanda |  Sweden | Ölanda | ESMZ | ||
| Örebro | Sweden | Örebro | ESOE | ORB | |
| Öresten | Sweden | Öresten | ESGM | ||
| Örnsköldsvik | Sweden | Örnsköldsvik | ESNO | OER | |
| Överkalix | Sweden | Överkalix | ESNE | ||
| Óbidos |  Brazil | Óbidos | SNTI | OBI | |
| Ólafsfjörður |  Iceland | Ólafsfjörður | BIOF | OFJ | |
| Ônix | Brazil | São Paulo | SDON | ||
| Őcsény |  Hungary | Őcsény | LHOY | ||
| AJ Eisenberg |  United States | Oak Harbor | ODW | ||
| Bergamo / Orio Al Serio |  Italy | Bergamo | LIME | BGY | |
| Chos Malal |  Argentina | Chos Malal | SAHC | HOS | |
| Clarksville–Montgomery County Regional – Outlaw Field | United States | Clarksville | KCKV | ||
| Dewitt Field,Old Town Municipal | United States | Old Town | KOLD | OLD | |
| El Tuqui |  Chile | Ovalle | SCOV | OVL | |
| Gaylord Regional | United States | Gaylord | GLR | ||
| Gaziantep International |  Turkey | Gaziantep | LTAJ | GZT | |
| Juan Mendoza |  Bolivia | Oruro | SLOR | ORU | |
| Kharkiv International |  Ukraine | Kharkiv | UKHH | HRK | |
| Kirkwall |  United Kingdom | Orkney Islands | EGPA | KOI | |
| Lanyu |  Taiwan | Orchid Island | RCLY | KYD | |
| Le Havre Octeville |  France | Le Havre/Octeville | LFOH | LEH | |
| Metropolitan Oakland International | United States | Oakland | KOAK | OAK | |
| Mosul International |  Iraq | Mosul | ORBM | OSB | |
| Ngjiva Pereira |  Angola | Ngiva | FNGI | VPE | |
| North West Santo |  Vanuatu | Olpoi | NVSZ | OLJ | |
| O & M Facilities | United States | Clarkston | 69WA | ||
| O And G | United States | Torrington | 05CT | ||
| O Estado de São Paulo | Brazil | São Paulo | SILK | ||
| O John Clark Restricted Landing Area | United States | Grays Lake | 7IL2 | ||
| O K Dies | United States | Salem | 64OH | ||
| O K Flying Club Inc | United States | Fillmore | 28IS | ||
| O Neal Field | United States | Greer | 20SC | ||
| O S Wyatt | United States | Realitos | 14TS | ||
| O'Bleness Memorial Hospital | United States | Athens | OH23 | ||
| O'Brien Airpark | United States | Waxahachie | 25XS | ||
| O'Brien Airpark East/West | United States | Branford | FD71 | ||
| O'Brien Flying Service | United States | Iowa | LA71 | ||
| O'Connell Brothers | United States | Brawley | 59CL | ||
| O'Connor Field | United States | Pecatonica | 8IL5 | ||
| O'Dwyer | United States | Flemington | 60NJ | ||
| O'Gara Tech Training Facility | United States | Danville | VA40 | ||
| O'Neal | United States | Vincennes | KOEA | ||
| O'Riley | United States | Fort Plain | NY71 | ||
| O'Sullivan Army | United States | Camp San Luis Obispo | CSL | ||
| O'Toole Ranch | United States | Austin | NV02 | ||
| Oława-Stanowice Field (closed) |  Poland | Oława | |||
| Oak Country Ranch | United States | Paso Robles | 33CL | ||
| Oak Glen Ranch | United States | Cooper | 3TS9 | ||
| Oak Grove Mcolf | United States | Pollocksville | 13NC | ||
| Oak Hammock Air Park |  Canada | Oak Hammock | CAV9 | ||
| Oak Harbor Seaplane Base | United States | Haines City | FA73 | ||
| Oak Hill Hospital | United States | Oak Hill | OH72 | ||
| Oak Lake Air Strip | United States | Erskine | MN42 | ||
| Oak Landing | United States | Bull Valley | 16LL | ||
| Oak Ridge | United States | Oak Ridge | 2TN3 | ||
| Oak Ridge | United States | East Palmyra | NY16 | ||
| Oak Ridge | United States | Ingleside | 4TA7 | ||
| Oak Ridge | United States | Interlachen | FL82 | ||
| Oak Ridge Farms | United States | New Boston | 5MO9 | ||
| Oak Ridge Plantation | United States | Sylvester | 13GA | ||
| Oak Tree Landing | United States | High Springs | 6J8 | ||
| Oakbrook | United States | Fort Atkinson | 47WI | ||
| Oakdale | United States | Oakdale | ODC | KO27 | |
| Oakdale Army | United States | Oakdale | 16PN | ||
| Oakes Field | United States | Charlottesville | 66IN | ||
| Oakes Field-Nassau |  Bahamas | Nassau | MYX6 | ||
| Oakes Municipal | United States | Oakes | K2D5 | ||
| Oakesdale | United States | Oakesdale | 75DC | ||
| Oakhill Airpark | United States | Williamson | SC82 | ||
| Oakland Convention Center | United States | Oakland | CL41 | ||
| Oakland County International | United States | Pontiac | KPTK | ||
| Oakland County International | United States | Pontiac, MI | PTK | ||
| Oakland Southwest | United States | New Hudson | KY47 | ||
| Oakland Troy | United States | Troy | KVLL | ||
| Oakland/Coliseum Stat | United States | Oakland, MD | OBT | ||
| Oakleaf | United States | Hartford | 9SD8 | ||
| Oakley | United States | Nashville | TN79 | ||
| Oakley Municipal | United States | Oakley | 1U6 | ||
| Oakley Municipal | United States | Oakley | KOEL | ||
| Oakridge Ranch | United States | Eagle Point | 26OG | ||
| Oakridge State | United States | Oakridge | K5S0 | ||
| Oaks | United States | Arp | TX24 | ||
| Oaks Helistop | United States | Venice | FD43 | ||
| Oaksey Park | United Kingdom | Malmesbury | EGTW | ||
| Oakview | United States | Six Mile | SC52 | ||
| Oakville (Trafalgar Memorial Hospital) | Canada | Oakville | CPE8 | ||
| Oakwood Hospital | United States | Dearborn | 56MI | ||
| Oamites Landing Strip |  Namibia | Oamites | |||
| Oaonui |  New Zealand | Oaonui | NZMQ | ||
| Oasis Graal | Brazil | Rio Bonito | SIOG | ||
| Oasis Ranch | United States | Philip | 0SD6 | ||
| Oasis Ranger Station-U.S. Government | United States | Everglades City | 9FL7 | ||
| Oban |  Australia | Oban | OBA | ||
| Oban | United Kingdom | North Connel | EGEO | OBN | |
| Obannon Creek Aerodrome | United States | Goshen | OH66 | ||
| Obano |  Indonesia | Obano-Papua Island | OBD | ||
| Obaye |  Congo (Kinshasa) | Obaye | FZNQ | ||
| Obbia |  Somalia | Obbia | HCMO | CMO | |
| Obenteni |  Perú | Obenteni | SPBT | ||
| Ober-Mörlen |  Germany | Ober-Mörlen | EDFP | ||
| Oberá | Argentina | Oberá | SATO | ||
| Oberhinkofen Airfield | Germany | Regensburg | |||
| Oberlander | United States | Union City | PA52 | ||
| Oberleichtersbach Airfield | Germany | Bad Brückenau | |||
| Oberlin Municipal | United States | Oberlin | KOIN | ||
| Obermehler-Schlotheim | Germany | Obermehler | EDCO | ||
| Oberon | Australia | Oberon | YOBE | ||
| Oberpullendorf | Austria | Oberpullendorf | |||
| Oberrissdorf | Germany | Lutherstadt Eisleben | EDUO | ||
| Oberschleißheim Airfield | Germany | Oberschleißheim | EDNX | ||
| ObGES Airfield |  Russia | Novosibirsk | |||
| Obi Kiik |  Uzbekistan | Khodzhi Sagat | |||
| Obi One | United States | Delaware | 7OH3 | ||
| Obo |  Papua New Guinea | Obo | OBX | ||
| Obock |  Djibouti | Obock | HDOB | OBC | |
| Obokote | Congo (Kinshasa) | Obokote | FZOJ | ||
| Obre Lake | Canada | Obre Lake | YDW | ||
| Obruchevka |  Kazakhstan | Obruchevka | |||
| Obura Airstrip | Papua New Guinea | Obura | AYOD | ||
| Ocaña |  Spain | Toledo | LEOC | ||
| Ocala International | United States | Ocala, FL | OCF | ||
| Ocala International Jim Taylor Field | United States | Ocala | KOCF | ||
| Occidental Petroleum | United States | Los Angeles | 44CN | ||
| Ocean Beach | New Zealand | Ocean Beach | NZOB | ||
| Ocean Beach Hospital | United States | Ilwaco | 7WA9 | ||
| Ocean City Municipal | United States | Ocean City | 26N | ||
| Ocean City Municipal | United States | Ocean City | KOXB | ||
| Ocean County | United States | Toms River | KMJX | ||
| Ocean County Mosquito Commission | United States | Barnegat | |||
| Ocean Falls Seaplane Base | Canada | Ocean Falls | ZOF | CAH2 | |
| Ocean Reef | United States | Ocean Reef | OCA | ||
| Ocean Reef Club | United States | Key Largo | 07FA | ||
| Ocean Ridge | United States | Gualala | E55 | ||
| Ocean Shores Municipal | United States | Ocean Shores | W04 | ||
| Ocean Springs | United States | Ocean Springs | K5R2 | ||
| Oceana County | United States | Hart/Shelby | KC04 | ||
| Oceana Nas /Apollo Soucek Field/ Station | United States | Virginia Beach | KNTU | ||
| Oceanic | United States | Oceanic | OCI | ||
| Oceano County | United States | Oceano | L52 | ||
| Oceanside Municipal | United States | Oceanside | KOKB | ||
| Ochakiv Air Base | Ukraine | Ochakiv | |||
| Ochoa Field | United States | Othello | 6WA4 | ||
| Ochs Private | United States | Madras | 72OR | ||
| Ochsenfurt | Germany | Ochsenfurt | EDGJ | ||
| Ochsner | United States | Madison | NE62 | ||
| Ochsner Medical Institutions | United States | Jefferson | LS96 | ||
| Ochsner St Anne General Hospital | United States | Raceland | 7LA2 | ||
| Ockel Farms | United States | Milton | DE23 | ||
| Oconee County | United States | Clemson | CEU | ||
| Oconee County Regional | United States | Clemson | KCEU | ||
| Oconomowoc | United States | Oconomowoc | 0WI8 | ||
| Ocorema | Brazil | Ladário | SSLR | ||
| Ocotales |  Honduras | Copón | MHOT | ||
| Ocotillo | United States | Ocotillo Wells | L90 | ||
| Ocracoke Island | United States | Ocracoke | KW95 | ||
| Odate Noshiro |  Japan | Odate | RJSR | ONJ | |
| Oddor Meanche |  Cambodia | Oddor Meanche | OMY | ||
| Odeco Cocodrie | United States | Cocodrie | LA85 | ||
| Odegaard | United States | Kindred | 57ND | ||
| Odell Williamson Municipal | United States | Ocean Isle Beach | K60J | ||
| Odendaalsrus |  South Africa | Odendaalsrus | FAOD | ||
| Odessa / Strawberry Lakes Airstrip | Canada | Qu'Appelle | CSL7 | ||
| Odessa International | Ukraine | Odessa | UKOO | ODS | |
| Odessa Memorial Hospital Ems | United States | Odessa | 9WA2 | ||
| Odessa Municipal | United States | Odessa | K43D | ||
| Odessa Schlemeyer Field | United States | Odessa | KODO | ||
| Odi | South Africa | Lerulaneng | FAIO | ||
| Odom Field | United States | Cabot | AR28 | ||
| Odom's Flying Service | United States | Jay | 50FL | ||
| Odom's Roost | United States | Newcastle | 76OK | ||
| Odot | United States | Sidney | 1OH6 | ||
| Odot Dist 4 Office | United States | Ravenna | 60OH | ||
| Odot Dist 4 Summit Co | United States | Cuyahoga Falls | 8OH6 | ||
| Odot District 03 | United States | Ashland | 5OH2 | ||
| Odot District Nr 1 | United States | Lima | OH84 | ||
| Odyssey | United States | Renton | 01WT | ||
| Oecussi |  Timor-Leste | Oecussi-Ambeno | WPOC | OEC | |
| Oedheim | Germany | Oedheim | EDGO | ||
| Oehna | Germany | Zellendorf | EDBO | ||
| Oelwein Municipal | United States | Oelwein | KOLZ | ||
| Oerke Enterprises | United States | Butler | 23MO | ||
| Oerlinghausen | Germany | Oerlinghausen | EDLO | ||
| Oeste Plaza Shopping - MC | Brazil | Andradina | SJDK | ||
| Oeventrop Airfield | Germany | Arnsberg | |||
| Offenburg | Germany | Offenburg | EDTO | ||
| Office Tower Itaim | Brazil | São Paulo | SDQT | ||
| Offshore Systems-Kenai | United States | Nikiski | 1AK5 | ||
| Offutt Acres | United States | East Brady | PN02 | ||
| Offutt Air Force Base | United States | Omaha | KOFF | ||
| Oficial Subinspector Gustavo Soarez De Souza | Argentina | La Matanza | |||
| Oficina Victoria | Chile | Oficina Victoria | SC49 | ||
| Ofu Village | American Samoa | Ofu Village | NSAS | OFU | |
| Ogallala Community Hospital | United States | Ogallala | NE14 | ||
| Ogden Hinckley | United States | Ogden | KOGD | ||
| Ogden Regional Medical Center | United States | Washington Terrace | 54UT |
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