Aircraft These are not all the airlines in the world but the ones that hold hands with the SFO Museum collection. There are 1,773 airlines and this is page 126 of 148.

Siebel Si 204A. It is related to Siebel (the company) .
Siemens-Schuckert D.I. It is related to Siemens-Schuckert (the company) .
Sikorsky (Russia) S-22 Il'ya Muromets. It is related to Sikorsky (Russia) (the company) .
Sikorsky (USA) S-36. It is related to Sikorsky (USA) (the company) .
Sikorsky (USA) S-38. It is related to Sikorsky (USA) (the company) .
Sikorsky (USA) S-39. It is related to Sikorsky (USA) (the company) .
Sikorsky (USA) S-39B. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-39 (the aircraft) .
Sikorsky (USA) S-40. It is related to Sikorsky (USA) (the company) .
Sikorsky (USA) S-40 American Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-40 (the aircraft) .
Sikorsky (USA) S-40 Caribbean Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-40 (the aircraft) .
Sikorsky (USA) S-40 Southern Clipper. It is related to Sikorsky (USA) (the company) and Sikorsky (USA) S-40 (the aircraft) .