International airports, regional fields and GA aerodromes — the places every mission starts and ends.

| Company | Type | Location | Codes |
|---|---|---|---|
| Olney-Noble Airport | international | United States | IATA OLY · ICAO KOLY |
| Olocau UL | aerodrome | Spain | — |
| O'Loughlin Airstrip | aerodrome | Ireland | — |
| Ol Seki airstrip | international | Kenya | IATA OSJ · ICAO HKOY |
| Olsens Air Park | aerodrome | United States | — |
| Olsobip Airport | international | Papua New Guinea | IATA OLQ · ICAO AYOV |
| Olson Aerodrome | aerodrome | United States | — |
| Olson Airfield | aerodrome | United States | — |
| Olson Airport | aerodrome | Elgin, United States | — |
| Olson Field | aerodrome | Holdrege, United States | — |
| Olson Landing Field | aerodrome | United States | — |
| Olson Private Airstrip | aerodrome |
aerodrome 30,878international 8,351military airfield 1,867private airstrip 1,800heliport 555regional 460
United States 15,232Brazil 2,982Australia 2,025Canada 1,765France 1,355Russia 1,265United Kingdom 1,109South Africa 938Germany 879Colombia 835Italy 718Indonesia 681Argentina 621Ukraine 570Papua New Guinea 536China 489Mexico 478Venezuela 468Spain 414India 411Namibia 376Chile 358Congo - Kinshasa 356South Sudan 331Poland 327Czechia 277New Zealand 250Kenya 242Sweden 222Japan 195Philippines 188Norway 179Botswana 151Portugal
Operators claiming an entry can correct facts, add services and certificates, and mark their page verified. Claiming is free — see a company’s page for the claim link.
| United States |
| — |
| Olsons Airport | aerodrome | United States | — |
| Oltman-Shuck Airport | aerodrome | United States | — |
| Olustee Municipal Airport | aerodrome | United States | — |
| Olympia Heliport | international | United States | IATA OLM · ICAO KOLM |
| Olympia Regional Airport | international | United States | IATA OLM · ICAO KOLM |
| Olympic Dam Airport | international | Australia | IATA OLP · ICAO YOLD |
| Olympic Field | aerodrome | United States | — |
| Olyokminsk Airport | international | Russia | IATA OLZ · ICAO UEMO |
| Omaha Flats Airfield | aerodrome | New Zealand | ICAO NZOF |
| Omaha Flats Airstrip | private airstrip | New Zealand | ICAO NZOF |
| Omaka Aerodrome | aerodrome | New Zealand | ICAO NZOM |
| Omak Airport | international | United States | IATA OMK · ICAO KOMK |
| Omamari Glider Strip | aerodrome | New Zealand | — |
| Omarama Glider Airport | aerodrome | New Zealand | ICAO NZOA |
| Omarchevo Airstrip | aerodrome | Bulgaria | — |
| Omar N. Bradley Airport | international | Moberly, United States | IATA MBY · ICAO KMBY |
| Omaruru Airport | aerodrome | Namibia | ICAO FYOM |
| Omaruru Beverages Airstrip | aerodrome | Namibia | — |
| Omaruru Game Lodge Airstrip | aerodrome | Namibia | ICAO FYGL |
| Omatako Ranch Airstrip | aerodrome | Namibia | — |
| Omatarassu Airfield | aerodrome | Namibia | ICAO FYMR |
| Omaura Airstrip | aerodrome | Papua New Guinea | ICAO AYUO |
| Omawewoz Airport | aerodrome | Namibia | — |
| Omban Airstrip | aerodrome | Indonesia | — |
| Ombersley (Mount Hesse) Airfield | aerodrome | Australia | — |
| Omboué Hospital Airport | international | Gabon | IATA OMB · ICAO FOOH |
| Ombu Airstrip | aerodrome | Namibia | — |
| Ombujondindi Airstrip | aerodrome | Namibia | — |
| Omdop Airstrip | aerodrome | Botswana | ICAO FBOM |
| Omdurman | aerodrome | South Sudan | — |
| Omega 1 STOLport | aerodrome | United States | — |
| Omega Airport | international | Namibia | IATA OMG · ICAO FYOE |
| Omega Landing Strip | aerodrome | United States | — |
| Omeo Airport | aerodrome | Australia | ICAO YOMO |
| Ometepe Airport | international | Nicaragua | IATA OMT · ICAO MNLP |
| Om Hajer | aerodrome | Eritrea | ICAO HHOH |
| Omicron Station Airport | aerodrome | Australia | — |
| Omidiyeh Airport | international | Iran | IATA OMI · ICAO OIAJ |