| IATA | ICAO | City | Region | State | Country | ODW | | Oak Harbor | | WASHINGTON | USA |
OAK | | Oakland | | CALIFORNIA | USA |
XOK | | Oakville | | Ontario | Canada |
OAX | | Oaxaca | | Oaxaca | Mexico |
OBO | | Obihiro | | | Japan |
ODE | | Odense | | | Denmark |
ODS | | Odessa | | | Ukraine |
OGS | | Ogdensburg | | NEW YORK | USA |
OHD | | Ohrid | | | Macedonia |
OIT | | Oita | | | Japan |
OKJ | | Okayama | | | Japan |
OKA | | Okinawa | | Ryukyu Islands | Japan |
OKC | | Oklahoma City | | OKLAHOMA | USA |
OLM | | Olympia | | WASHINGTON | USA |
OMA | | Omaha | | NEBRASKA | USA |
ONT | | Ontario | | CALIFORNIA | USA |
OMR | | Oradea | | | Romania |
ORN | | Oran | | | Algeria |
OAG | | Orange | | New South Wales | Australia |
ORB | | Orebro | | | Sweden |
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