Great-circle route SFO → SIN. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
The flight time from San Francisco to Singapore is approximately 16h 39m nonstop. The distance is 8,439 miles (13,581 km). There are about 4 nonstop flights from San Francisco to Singapore per day.
That is a great-circle estimate, not a scheduled block time. An airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
| Route | Est. time | Distance | Frequency | Airlines |
|---|---|---|---|---|
| SFO → SIN San Francisco International Airport to Singapore Changi Airport |
16h 39m | 8,439 mi | 28/wk | Singapore Airlines, United Airlines |
Frequencies come from our most recent schedule sample. Where a pairing shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
2 airlines fly nonstop from San Francisco to Singapore, including Singapore Airlines, United Airlines.
Recent scheduled departures on this route have used the Boeing 787-9, Airbus A350-900.
Aircraft assignments change by season and by time of day.
On a long east–west route like this one the two directions do not take the same time. Aircraft flying eastbound ride the mid-latitude jet stream and typically arrive earlier than the westbound leg, which flies into it. The difference is commonly 30 to 90 minutes on transatlantic and transpacific flights, and it varies by season. The estimate above does not model wind — treat it as a midpoint and check the airline's own timetable for the block time on your date.
The distance from San Francisco to Singapore is 8,439 miles, or 13,581 kilometres.
| Great-circle distance | 8,439 mi |
| Kilometres | 13,581 km |
| Nautical miles | 7,333 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 2 airlines fly it nonstop, with about 28 departures a week. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 16h 39m in the air on the SFO–SIN nonstop. That is a great-circle estimate from the 8,439-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
8,439 miles (13,581 km) great-circle between San Francisco International Airport and Singapore Changi Airport.
Singapore Airlines, United Airlines.
Recent scheduled departures have used the Boeing 787-9, Airbus A350-900. Assignments change by season and by time of day.
