Redigerer IATA-flyselskapskode (avsnitt)

===D===
<!-- 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! -->
* D0 – [[DHL|DHL Air Limited]] (Storbritannia)
* D3 – [[Daallo Airlines]] (Somalia/Djibouti)
* D4 – [[Alidaunia]] (Italia)
* D5 – [[Dau Air]] (Tyskland)
* D6 – [[Interair South Africa|Interair]] (Sør-Afrika)
* D7 – [[Dinar Lineas Aereas]] (Argentina) ''ikke lenger operativt''
* D7 – [[FlyAsianXpress]] (Malaysia)
* D8 – [[Norwegian Air International]] (Norge)
* D9 – [[Donavia]] (Russland)
* DA – [[Air Georgia]]
* DB – [[Brit Air]] (Frankrike)
* DC – [[Golden Air]] (Sverige)
* DD – [[Nok Air]] (Thailand)
* DE – [[Condor Airlines]] (Tyskland)
* DG – [[South East Asian Airlines]] (Filippinene)
* DH – [[Independence Air]] (USA) ''ikke lenger operativt''
* DI – [[dba]] (Tyskland)
* DJ – [[Virgin Blue]] (Australia)/[[Pacific Blue Airlines|Pacific Blue]] (New Zealand)/[[Polynesian Blue]] (Samoa)
* DK – [[Sunclass Airlines]] (Denmark)
* DL – [[Delta Air Lines]] (USA)
* DM – [[Maersk Air|Maersk]] (Danmark) ''oppkjøpt''
* DN – [[Air Deccan]] (India)
* DO – [[Air Vallée]] (Italia)
* DO – [[Dominicana de Aviación]] (Den dominikanske republikk) ''ikke lenger operativt''
* DP – [[First Choice Airways]] (Storbritannia)
* DQ – [[Coastal Air]] (De amerikanske Jomfruøyer)
* DS – [[easyJet Switzerland]] (Sveits)
* DT – [[TAAG Air Angola]] (Angola)
* DU – [[Norwegian Longhaul]] (Norge)
* DV – [[Lufttaxi Fluggesellschaft]] (Tyskland)
* DV – [[Nantucket Airlines]] (USA)
* DW – [[Aero-Charter Ukraine]] (Ukraina)
* DX – [[Danish Air Transport]] (Danmark)
* DY – [[Norwegian Air Shuttle]] (Norge)