Singapore Airlines Round Trip Nonstop Flight: San Francisco to Singapore from $542 (Requires Mastercard, Travel January - February 2026)

Singapore Airlines have round trip airfares travelling from San Francisco (SFO) to Singapore (SIN) for $578, nonstop if you have a Mastercard using the exclusive promotional code. Or for $643 on Expedia using other forms of payment. These are nonstops, economy lite fares that allow a personal item, a carry-on item and 2 free checked bags. There is no seat selection and no change. Travel Availability: Departs SFO: Jan 22, 26-29; Feb 1-5, 8-11