Singapore Airlines doesn't have a public-facing office in Düsseldorf for walk-in bookings, but their main German contact is via their Frankfurt office, reachable at +1-866-829-1086 (Mon-Fri 8am-6pm), offering reservations and support for German/Austrian/Swiss customers; for direct flight info or booking to Düsseldorf (DUS), use the Singapore Airlines website or contact center for general inquiries. Jauntlet.comhttps://jauntlet.com/