∟ SAS
∟ Saudi Arabian Airlines
∟ Silk Way Airlines
∟ Singapore Airlines
∟ SkyWork Airlines (bankrupt 2018)
∟ Small Planet Airlines (bankrupt 2018)
∟ Smartwings
∟ South African Airways
∟ SriLankan Airlines
∟ SunExpress
∟ Suparna Airlines
∟ Surinam Airways
∟ Swiss