Cities
In Germany
- Saarbrücken
- Schwalbach am Taunus
- Schwerte
- Schwäbisch Hall
- Siegen
- Solingen
- Starnberg
- Steinbach (Taunus)
- Steinfurt
- Stuttgart
- Sulzbach (Taunus)
International
Travel Agencies
In Germany
- Sarea Reiseservice - Dresden
- Schmidt & Partner Reisebüro - Bochum
- Senator Reisen - Berlin
- Siegerland Reisebüro - Siegen
- Sonnenschein Reisebüro - Saarbrücken
- Sonnenschein Reisebüro - Saarbrücken
- Steffen's Reisewelt GmbH - Kehl
- suedwest business travel - Rottweil
- SWP Reiseservice Düsseldorf - Düsseldorf
- SÜDWEST PRESSE & Hapag-Lloyd Reisebüro GmbH & Co.KG - Ulm
International
- Safe Harbors - Belcamp, Maryland
- Saimon Air Travels - Dhaka
- Salbusiness 1929 - Bologna
- Saltours International - Karachi
- Samseir Travel - Tehran
- Santini Viaggi - Fabriano
- Sar-El Tours - Sar-El
- Sayohat Travel - Dushanbe
- Scanworld - Danderyd
- Schooner Viaggi - Milan - Casatenovo
- Secontur - Buenos Aires
- Sepehr Parvaz - Tehran
- Seti First Travel - Cairo
- Shafagh Tours - Isfahan
- Shakh Travel - Almaty
- Sirius Travel - Porto
- Smart World Travel & Tours - Kuala Lumpur
- Socaltur Turismo - Novo Hamburgo
- Soleans Service - St. Petersburg
- Space Travel - Doha
- Springer Reisen - Klagenfurt
- ST Travel - Prague
- Stare Miasto - Warsaw
- Start Travel - Baku
- STI Travel - Baku
- Sudameria - Buenos Aires
- Supertour - Warsaw
- Synthesis Group - Argyroupoli, Athens