Redigerer IATA-flyselskapskode (avsnitt)

===B===
<!-- when adding a IATA code to the list, please make sure that under the disambiguation page corresponding to the IATA code, the airline is listed! -->
* B2 – [[Belavia]] (Belarus)
* B3 – [[Bellview Airlines (Nigeria)|Bellview Airlines]] (Nigeria)
* B4 – [[B.A.C.H. Flugbetriebs]] (Østerrike)
* B4 – [[Bankair]] (USA)
* B4 – [[Flyglobespan]] (Storbritannia)
* B5 – [[Flightline (UK)|Flightline]] (Storbritannia)
* B6 – [[JetBlue Airways]] (USA)
* B7 – [[Uni Air]] (Taiwan)
* B8 – [[Eritrean Airlines]]
* B9 – [[Air Bangladesh]]
* B9 – [[Iranair Tours]]
* BA – [[British Airways]] (Storbritannia)
* BB – [[Seaborne Airlines]] (USA)
* BC – [[Skymark Airlines]] (Japan)
* BD – [[bmi British Midland|bmi]] (Storbritannia)
* BE – [[Flybe]] (Storbritannia)
* BF – [[Aero-Service]] (Kongo)
* BF – [[Bluebird Cargo]] (Island)
* BG – [[Biman Bangladesh Airlines]]
* BH – [[Hawkair]] (Canada)
* BI – [[Royal Brunei Airlines]]
* BJ – [[Nouvelair]] (Tunis)
* BK – [[US Airways Express|Potomac Air]] (USA)
* BL – [[Pacific Airlines]] (Vietnam)
* BM – [[Air Sicilia]] (Italia)
* BM – [[Bayu Indonesia Air]] (Indonesia)
* BN – [[Forward Air International Airlines]] (USA)
* BN – [[Braniff International Airways]] (USA) ''ikke lenger operativt''
* BN – [[Horizon Airlines (Australia)|Horizon Airlines]] (Australia) ''ikke lenger operativt''
* BO – [[Bouraq Indonesia Airlines]] ''ikke lenger operativt''
* BP – [[Air Botswana]] (Botswana)
* BQ – [[Aeromar Lineas Aereas Dominicanas]] (Den dominikanske republikk) ''ikke lenger operativt''
* BQ – [[Bravo Airlines]] (Spania) ''ikke lenger operativt''
* BR – [[EVA Airways]] (Taiwan)
* BS – [[British International Helicopters]]
* BT – [[Air Baltic]] (Latvia)
* BU – [[Braathens]] (Norge) '' oppkjøpt'' ''datter selskap startet opp i ''sverige''[[2007]]
* BV – [[Blue Panorama Airlines]] (Italia)
* BW – [[Caribbean Airlines]] (Trinidad og Tobago)
* BX – [[Coast Air]] (Norge) ''ikke lenger operativ''
* BY – [[Thomsonfly]] (Storbritannia)
* BZ – [[Blue Dart Aviation]] (India)
* BZ – [[Keystone Air Service]] (Canada)