AIRLINES CODES

-O-

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O1

Not in use

O2

Not in use

O3

Not in use

O4

Not in use

O5

Not in use

O6

Not in use

O7

Not in use

O8

Not in use

O9

Not in use

O0

Not in use

OA
Olympic
Olympic Airlines (previous: Olympic Airways)
Greece
(see also ML)

OB
Astrakhan Airlines
Callsign: Air Astrakhan
Russia

former users:

1) Shepparton Airlines
Austraila

2) Austrian Airtransport
Osterreiechische Flugbetriebsgesellschaft mbH.
Callsign: Aircharter/Austrian charter
Austria
(see also OG and U8)

3) Oasis
Oasis International Airlines
Spain

OC
Omni
Omni - Aviacao E Tecnologia Lda.
Portugal

former users:

1) Aircraft Operating Co. (Aerial Surveys) Ltd.
Callsign: Airphotos
South Africa

2) Sunshine
Sunshine Aviation SA
Switzerland

OD
Natalco
Natalco Airlines Limited
D.R. of Congo

former users:

1) Aerocondor
Aerocondor - Aerovías Condor de Colombia Ltda.
Colombia

2) Zuliana
Zuliana de Aviacion .C.A.
Venezuela

OE
Asia Overnight
Asia Overnight Express Corporation
Philippines

former users:

1) Out-Island Airways
Out-Island Airways Ltd.
UK

2) Polsterer
Bedarfsflugunternehmen Dr. L. Polsterer
Austria

3) Express Air Services (changed to LS)
Express Air Services (Channel Islands) Ltd.
UK

4) Westair/United Express
Westair Commuter Airlines Inc.
USA
(see also UA and DH)

5) Air Omega
Air Omega Luftverkehrsgesellschaft mbH
Callsign: Warlock
Germany

OF
2 users

1) Transports et Travaux Aériens de Madagascar
Callsign: Tam Airline
Madagascar

2) Air Finland
Air Finland Ltd.
Finland

former user:

British Aircraft Corp. (BAC)
British Aircraft Corp. (BAC) (Filton Division)
UK

OG

Not in use

former users:

1) Orientair
Orientair Ltd.
UK

2) Austrian Airtransport
Osterreiechische Flugbetriebsgesellschaft mbH.
Callsign: Aircharter/Austrian charter
Austria
(see also OB and U8)

3) Air Guadeloupe
Air Guadeloupe (Société Antillaise de Transport Aériens - SATA)
Guadeloupe
(see also TX)

4) Go Fly (changed to GO)
Go Fly Ltd.
Callsign: Go-Flight
UK

5) Ocean Airways
France

OH
Delta Connection Comair
Comair Inc.
Callsign: Comair
USA
(see also DL)

former users:

1) XP International
XP International BV
Callsign: XP Parcel
Netherlands

2) SFO Helicopter Airlines
SFO Helicopter Airlines Inc.
Callsign: SFO Airlines
USA

OI
Aspiring Air
Aspiring Air Limited
New Zealand

former users:

1) Slov-Air
Czechslovakia

2) H. Jonsson air Taxi
Callsign: Odinn
USA

3) Heli Transport
Heli Transport SA
France

OJ
Overland
Overland Airways Limited
Nigeria

former user:

Maof Airlines
Israel

OK
Czech Airlines (previous: Ceskoslovenske Aerolinie (CSA))
Czech Airlines A.S. - CSA
Callsign: CSA-Lines
Czech Republic

OL
OLT
OLT-Ostfriesische Lufttransport
Callsign: Oltra
Germany

former user:

Odyssey
Odyssey International
Canada

OM
MIAT - Mongolian Airlines
Callsign: Mongol Air
Mongolia

former user:

Monarch
Monarch Airlines Ltd.
UK
(see also ZB)

ON
Air Nauru
Nauru

OO
SkyWest (previous: Sky West)
SkyWest Airlines
USA

former user:

Sobelair
Sobelair - Société Belge de Transports Aériens
Belgium
(see also Q7)

OP
Chalk's International Airlines
Flying Boat Inc./Chalk's International Airines
USA

former user:

Air Panama International
Callsign: Arpa
Panama

OQ
Queen Air
Aeronaves Queen S.A.
Dominican Republic
(see also 7Q and 5G)

former users:

1) Zambian Express Airways
Zambian Express Airways (1995) Limited
Callsign: Zambex
Zambia

2) Sunrise Airlines
Sunrise Airlines Inc./Express Air Inc.
Callsign: Effex
USA

OR

Not in use

former users:

1) Crimea Air
Ukraine

2) Air Comores
Callsign: Aircomor
Comores

OS
Austrian (previous: Austrian Airlines)
Austrian Airlines - Osterreichische Luftverkehrs AG
Austria

OT
Aeropelican
Aeropelican Air Services Pty Ltd.
Australia
(see also PO)

former users:

1) Avant Airlines
Avant Airlines S.A.
Chile

2) Servicio de Transportes Aereos de Sao Tome
Callsign: Sta
Sao Tome And Principe

OU
Croatia
Croatia Airlines
Croatia

former users:

1) Court Line
Court Line Aviation Ltd.
UK

2) Sultan of Oman Air Force
Callsign: Oscar Uniform
Oman

3) Air Atonabee
Air Atonabee Limited
Callsign: City Express
Canada

OV
Estonian Air
Callsign: Estonian
Estonia

former users:

1) Overseas National Airlines
Overseas National Airlines, Inc.
Callsign: Onair
USA

2) Aeromaritime
Callsign: Aeromar
France
(see also QK)

OW
Executive Airlines
Executive Airlines Inc.
Callsign: Echoline
USA

former users:

1) Metavia Airlines
Metavia Airlines Pty. Ltd.
Callsign: Viamet
South Africa

2) Owenair
Owenair (PTY) Ltd.
South Africa

3) Cargosur
Spain

OX
Orient Thai
Orient Thai Airlines
Thailand

former user:

Skyline
Skyline AB
Sweden

OY
2 users

1) Omni Air Express
Omni Air International, Inc.
Callsign: Omni-Express
USA
(see also 1I)

2) Soder
Oy Soder Air Ltd.
Finland

former users:

1) Conair
Conair A/S
Demark

2) African Intercontinental Airways
Gambia

OZ
Asiana
Asiana Airlines, Inc.
R.O.Korea

former user:

Ozark
Ozark Airlines
USA
(see also ZO)

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