IATA Airline codes – S

SA Airlink – Midlands Aviation
 4Z
SA Alliance
 Y2
Sabena-Belgian World Airlines
 SN
Sabre Airways
 TJ
SAETA – Sociedad Ecuatoriana de Aereos
 EH
Safair
 FA
Sahara Airlines
 S2
Sakhalinskie Aviatrassy – SAT
 HZ
SAM – Sociedad Aeonautica de Medellin
 MM
Samara Airlines
 E5
SAN – Servicios Aereos Nationales
 WB
San Air Company
 S3
SANSA – Servicios Aereos Nacionales SA
 RZ
SATA Air Acores
 SP
SATA International
 S4
Saudi Arabian Airlines
 SV
Sayakhat
 W7
Scandinavian Airlines (SAS)
 SK
Scenic Airlines
 YR
Sempati Air
 SG
Servicos Aeros Regionais
 SL
Servivensa
 VC
Shaheen Air International
 NL
Shuswap Flight Centre
 3S
Shuttle America
 S5
Sibaviatrans
 5M
Siberia Airlines
 S7
Sichuan Airlines
 3U
Sierra National Airlines
 LJ
Sierra Pacific Airlines
 SI
Silkair
 MI
Singapore Airlines
 SQ
SK Air
 S9
Skargardsflyg
 5Q
Sky Cabs
 2E
Skyking
 RU
Skyward Aviation
 K9
Skyway Airlines / Midwest Express Connection
 AL
Skywest Airlines
 OO
Skywest Airlines
 YT
Slovak Airlines – Slovenske Aerolinie
 6Q
Sobelair
 Q7
Solomon Airlines
 IE
South African Airways (SAA)
 SA
South African Express Airways
 YB
Southern Winds
 A4
Southwest Airlines
 WN
Spanair
 JK
Spirit Airlines
 NK
SR,Swissair
 SR
Star Airlines
 2R
State Transport Company of Russia
 R4
Suckling Airways
 CB
Sudan Airways
 SD
Sun Air
 BV
Sun Country
 SY
Sunflower Airlines
 PI
Sunrise Airlines
 OQ
Sunworld International Airways
 SM
Surinam Airways / SLM
 PY
Swazi Airlink
 ZC
Swiss Wings
 RQ
Syrianair – Syrian Arab Airlines
 RB