| IATA | ICAO24 | MAP | NAME | CITY | COUNTRY | TIMEZONE | LATITUDE | LONGITUDE | RUNWAY | ELEVATION | WEBSITE | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OLP | YOLD | Olympic Dam | Olympic Dam | Australia | Australia/Adelaide | -30.485 | 136.877 | 105 | ||||
| OMB | FOOH | Omboue | Omboue | Gabon | Africa/Libreville | -1.575 | 9.263 | 1700 | 10 | |||
| OMG | FYOE | Omega | Omega | Namibia | Africa/Windhoek | -18.030 | 22.191 | 1695 | 914 | |||
| OMI | OIAJ | Omidieh | Omidieh | Iran | Asia/Tehran | 30.835 | 49.535 | 26 | ||||
| OML | None | Omkalai | Omkalai | Papua New Guinea | Pacific/Port_Moresby | -6.183 | 144.967 | 521 | 1750 | |||
| OSE | None | Omora | Omora | Papua New Guinea | Pacific/Port_Moresby | -7.833 | 147.083 | 500 | 732 | |||
| OMS | UNOO | Omsk | Omsk | Russian Federation | Asia/Omsk | 54.967 | 73.311 | 95 | ||||
| OMJ | None | Omura | Omura | Japan | Asia/Tokyo | 35.083 | 140.100 | |||||
| OND | FYOA | Ondangwa | Ondangwa | Namibia | Africa/Windhoek | -17.878 | 15.953 | 2987 | 1097 | |||
| OEA | KOEA | Oneal | Vincennes | United States | America/Indiana/Vincennes | 38.691 | -87.552 | 1052 | 126 | |||
| UCA | KUCA | Oneida County | Utica | United States | America/New_York | 43.150 | -75.383 | 1829 | 226 | |||
| RHI | KRHI | Oneida County | Rhinelander | United States | America/Chicago | 45.631 | -89.467 | 2073 | 495 | |||
| ONE | None | Onepusu | Onepusu | Solomon Islands | Pacific/Guadalcanal | -9.167 | 161.067 | |||||
| OGV | LZOC | Ongava Game Reserve | Ongava Game Reserve | Namibia | Africa/Windhoek | -22.183 | 18.533 | |||||
| VPE | FNGI | Ongiva | Ongiva | Angola | Africa/Luanda | -17.043 | 15.684 | 2475 | 1087 | |||
| ONN | EGXU | Onion Bay | Onion Bay | United States | America/Anchorage | 58.233 | -152.833 | |||||
| ONU | NFOL | Ono I Lau | Ono I Lau | Fiji | Pacific/Fiji | -20.650 | -178.700 | 800 | 34 | |||
| ONB | None | Ononge | Ononge | Papua New Guinea | Pacific/Port_Moresby | -8.583 | 147.200 | 500 | 1737 | |||
| OOT | NGON | Onotoa | Onotoa | Kiribati | Pacific/Tarawa | -1.796 | 175.526 | 914 | 2 | |||
| ONS | YOLW | Onslow | Onslow | Australia | Australia/Perth | -21.668 | 115.113 | 1372 | 7 |