Redigerer IATA-flyselskapskode (avsnitt)

===S===
<!-- 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! -->
* S0 – [[Slok Air Gambia]] (Gambia)
* S2 – [[Air Sahara]] (India)
* S3 – [[Santa Barbara Airlines]] (Venezuela)
* S4 – [[SATA International]] (Portugal)
* S5 – [[Shuttle America]] (USA)
* S5 – [[Trast Aero]] (Kirgisistan)
* S6 – [[Star Air (Denmark)|Star Air]] (Danmark)
* S7 – [[S7 Airlines]] (Russland)
* S8 – [[Chari Aviation Services]] (Sør-Afrika)
* S8 – [[Shovkoviy Shlyah Airlines]] (Ukraina)
* S9 – [[East African Safari Air]] (Kenya) ''ikke lenger operativt''
* SA – [[South African Airways]] (Sør-Afrika)
* SB – [[Aircalin]] (Frankrike)
* SC – [[Shandong Airlines]] (Kina)
* SD – [[Sudan Airways]]
* SE – [[Star Airlines]] (Frankrike)
* SF – [[Tassili Airlines]] (Algerie)
* SG – [[Jetsgo]] (Canada) ''ikke lenger operativt''
* SG – [[SpiceJet]] (India)
* SH – [[FlyMe]] (Sverige) 'konkurs'
* SI – [[Skynet Airlines]] (Irland)
* SJ – [[Freedom Air]] (New Zealand)
* SK – [[Scandinavian Airlines]] (Sverige, Danmark, Norge (som SAS Braathens))
* SL – [[Rio Sul Serviços Aéreos Regionais]] (Brasil)
* SM – [[Swedline Express]] (Sverige)
* SN – [[Brussels Airlines]] (Belgia)
* SO – [[Sosoliso Airlines]] (Nigeria)
* SO – [[Superior Aviation]] (USA)
* SP – [[SATA Air Acores]] (Portugal)
* SQ – [[Singapore Airlines]] (Singapore)
* SR – [[Swissair]] ''ikke lenger operativt''
* SS – [[Corsairfly]] (Frankrike)
* ST – [[Germania (airline)|Germania]] (Tyskland)
* SU – [[Aeroflot]] (Russland)
* SV – [[Saudi Arabian Airlines]] (Saudi-Arabia)
* SW – [[Air Namibia]] (Namibia)
* SY – [[Sun Country Airlines]] (USA)