| Airport |
IATA code |
ICAO code |
Logo & link |
O'Higgins Station, Odell Glacier  pour GBR |
- |
AT18 |
 |
Oakland International  |
OAK |
KOAK |
 |
Obock  |
OBC |
HDOB |
 |
Ocean Cay  |
- |
MYBO |
 |
Odate-Noshiro  |
ONJ |
RJSR |
 |
Odense  |
ODE |
EKOD |
 |
Odessa International  |
ODS |
UKOO |
 |
Ogle International  |
OGL |
SYGO |
 |
Ohrid "St. Paul l'Apôtre"  |
OHD |
LWOH |
 |
| Oita |
OIT |
RJFO |
 |
| Ojika |
- |
RJDO |
 |
| Okadama |
OKD |
RJCO |
 |
Okaukuejo  |
OKF |
FYOO |
 |
| Okayama |
OKJ |
RJOB |
 |
| Oki |
OKI |
RJNO |
 |
| Okinoerabu |
OKE |
RJKB |
|
Okondja  |
OKN |
FOGQ |
 |
Okoyo  |
OKG |
- |
 |
| Okushiri |
OIR |
RJEO |
|
Okwa  |
- |
FBOK |
|
Olanchito  |
OAN |
MHOA |
 |
Olavarria  |
- |
SAZF |
 |
Olbia - Costa Smeralda  |
OLB |
LIEO |
 |
Oloron - Herrère  |
- |
LFCO |
 |
Olsztyn-Mazury Regional  |
SZY |
EPSY |
 |
Olympic Dam  |
OLP |
YOLD |
 |
| Omega |
OMG |
FYOE |
 |
Omsk Tsentralny  |
OMS |
UNOO |
 |
| Ondangwa |
OND |
FYOA |
 |
Ono-i-Lau  |
ONU |
NFOL |
 |
Onotoa  |
NGON |
OOT |
 |
| Onslow |
ONS |
YOLW |
 |
| Ontario International |
ONT |
KONT |
 |
Oostwold  |
- |
EHOW |
 |
| Opuwa |
OPW |
FYOP |
 |
OR Tambo International (Johannesburg / Pretoria)  |
JNB |
FAJS |
 |
Oral Ak Zhol  |
URA |
UARR |
|
| Oran |
ORA |
SASO |
 |
Oran Es Senia  |
ORN |
DAOO |
 |
| Oran Tafaraoui |
TAF |
DAOL |
 |
| Orange |
OAG |
YORG |
 |
Orange Walk  |
ORZ |
- |
 |
| Oranjemund |
OMD |
FYOG |
 |
| Orapa |
ORP |
FBOR |
 |
| Orbost |
RBS |
YORB |
 |
Ordos Ejin Horo  |
DSN |
ZBDS |
|
| Orenburg Tsentralny |
REN |
UWOO |
 |
| Orinduik |
ORJ |
SYOR |
|
Oripää  |
- |
EFOP |
 |
| Orlando International |
ORL |
KORL |
 |
| Orlando Sanford International |
SFB |
KSFB |
 |
| Orléans - Saint-Denis-de-l'Hôtel |
- |
LFOZ |
 |
Ormara  |
ORW |
OPOR |
|
Ormoc  |
OMC |
RPVO |
|
| Orsk |
OSW |
UWOR |
|
| Osaka International |
ITM |
RJOO |
 |
óscar Arnulfo Romero International  |
SAL |
MSLP |
 |
Osh  |
UCFO |
OSS |
|
| Oshakati |
OHI |
FYOS |
|
| Oshima |
OIM |
RJTO |
|
Osijek  |
OSI |
LDOS |
 |
| Oskemen |
UKK |
UASK |
 |
Oslo Gardermoen  |
OSL |
ENGM |
 |
| Oslo Rygge |
RYG |
ENRY |
 |
| Oslo Torp |
TRF |
ENTO |
 |
Ostend  |
OST |
EBOS |
 |
Ostrava Mosnov  |
OSR |
LKMT |
 |
Osvaldo Vieiro International  |
OXB |
GGOV |
 |
Ottawa Macdonald-Cartier  |
YOW |
CYOW |
 |
Ouagadougou  |
OUA |
DFFD |
 |
Ouanaminthe  |
OAN |
- |
|
Ouani  |
AJN |
FMCV |
 |
Ouarzazate  |
OZZ |
GMMZ |
 |
Oudomsay  |
VLOS |
ODY |
|
| Oudtshoorn |
OUH |
FAOH |
 |
| Ouessant |
- |
LFEC |
 |
| Ouesso |
OUE |
FCOU |
|
| Oujda - Angads |
OUD |
GMFO |
 |
| Oulu |
OUL |
EFOU |
|
| Oum el Bouaghi |
QMH |
DABO |
 |
| Outagamie County Regional |
ATW |
KATW |
 |
Ouvéa  |
UVE |
NWWV |
|
| Owando |
FTX |
FCOO |
|
Owen Roberts International  |
GCM |
MYCR |
 |
| Owensboro-Daviess County Regional |
OWB |
KOWB |
 |
| Oyem |
OYE |
FOGO |
|
| Oyo Ollombo |
OLL |
FCOD |
 |
| Oyonnax - Arbent |
- |
LFLK |
 |
