Cheap flights from San Francisco to Singapore
Cheapest current fares: $372 in September 2026, 13,580 km direct flight in ~15h 59m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Francisco (SFO) to Singapore (SIN). Refreshed daily.
San Francisco (SFO) → Singapore (SIN)
- September 2026 $372
- October 2026 $392
Frequently asked questions
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What is the cheapest month to fly from San Francisco to Singapore?
Based on current 6-month forward fare data, September 2026 is the cheapest month to fly from San Francisco (SFO) to Singapore (SIN), with fares starting from $372.
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What is the lowest current fare from SFO to SIN?
The lowest currently-listed fare from San Francisco (SFO) to Singapore (SIN) is $372 on 2026-09-21.
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How long is the flight from San Francisco to Singapore?
Direct flights from SFO to SIN cover approximately 13,580 km (8,438 miles), with an estimated flight time of 15h 59m. Operating airlines: SQ, UA.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.