Round Trip San Francisco to Singapore for $697

United Airlines and Priceline are offering round trip fares from San Francisco (SFO) to Singapore (SIN) for $697, nonstop. These fares include a personal item, a carry-on, and one free checked bag, with no seat selection or changes. The availability spans multiple months, with departures from October through March 2027. This price is competitive for nonstop flights of this distance, especially considering the baggage included and the absence of extra fees for basic economy. Booking early using Priceline or United Airlines on the specified dates may help secure this fare, which is a notable deal for travelers planning trips during this period.