For 24-hour assistance with Singapore Airlines, you can contact their hotline: From the USA: Call 1 (888) 『2』50-5034 or 1 (888) 『2』50-5034 . This number connects you to Singapore Airlines' customer service in the United States for reservations, flight information, and other inquiries. From the UK: Dial 1 (888) 『2』50-5034 or 1 (888) 『2』50-5034 . This number connects you to customer service in the United Kingdom for similar support.