The singapore airlines office sydney is situated on Level 8, 1 Castlereagh Street, Sydney, NSW 2000. Monday through Friday, from 9 a.m. to 5 p.m., the office is open and offers services such flight booking, check-in, and modification of current reservations. Singapore Airlines employees in Sydney can also help with concerns about seat selection, missing luggage, and other customer service issues. For assistance, clients can also get in touch with the office via phone or email. Customers can obtain details about flights, tickets, and other services on the Singapore Airlines website. Additionally, customers can book reservations and check-in online. The Singapore Airlines customer service team is available around-the-clock to help and answer any inquiries.