Singapore (SIN) → San Francisco (SFO)

Singapore Changi Airport to San Francisco International Airport · 7,333 nm (13,581 km) · about 16.5 h nonstop

Cheapest economy fares, checked daily · 45 days of history · live business class search links

Written and maintained by Jake McEwen
SINSFO

Booking links are plain searches — none are affiliate links, and the site earns nothing if you book. Prices are the cheapest fares other travellers recently found, not live availability — always confirm the fare before you pay.

Economy

last checked 3h ago
$467one-way

United Airlines · nonstop · 15h 05m · travel Nov 2 · sold via Farera

Book on Aviasales· $467 ↗Compare on Google Flights ↗Compare on Skyscanner ↗
Lowest (90d)
$409
Typical (median)
$459
Highest (90d)
$492
Checks
57
Cheapest fare seen at each daily check over the last 90 days. Green dots are checks that qualified as a deal.

When it's cheapest to travel

Travel dates of the cheapest fare found at each of our 57 daily checks — where the low fares were, not every date.

Lowest fare by travel month
Sep 2026$40910×
Oct 2026$45515×
Nov 2026$42632×
Typical fare by day of travel
Thucheapest$45917×
Fri$45924×
Sat$4675×
Mon$4675×
Tue$4746×
CheckedFareAirlineStopsTravelSold via
2026-10-24$467United AirlinesnonstopNov 2FareraBook ↗
2026-10-24$467United AirlinesnonstopNov 2FareraBook ↗
2026-10-23$467United AirlinesnonstopNov 2FareraBook ↗
2026-10-22$467United AirlinesnonstopNov 2FareraBook ↗
2026-10-22$474Beijing Airlines1 stopNov 3Trip.comBook ↗
2026-10-21$474Beijing Airlines1 stopNov 3Trip.comBook ↗
2026-10-20$474Beijing Airlines1 stopNov 3Trip.comBook ↗
2026-10-19$474Beijing Airlines1 stopNov 3Trip.comBook ↗
2026-10-19$474Beijing Airlines1 stopNov 3—Book ↗
2026-10-18$455United AirlinesnonstopOct 19—Book ↗
2026-10-17$492United AirlinesnonstopOct 23—Book ↗
2026-10-16$492United AirlinesnonstopOct 23—Book ↗

Business class

We don't quote business class fares on this route: our fare source prices economy only, and we would rather show no number than a wrong one. These open a live business class search for SIN → SFO:

Compare on Google Flights ↗Compare on Skyscanner ↗

Airlines selling the cheapest fares

Which carrier had the lowest fare on each of our checks over the last 90 days.

  • United Airlines ×29
  • Singapore Airlines ×22
  • Beijing Airlines ×5
  • Swiss ×1

Notable flights on this route

  • UA2 United Airlines — United number two, the marathon back from Singapore to San Francisco.
  • SQ1 Singapore Airlines — Singapore Airlines' flight number one, to San Francisco via Hong Kong.

About this route

Singapore (SIN) to San Francisco (SFO) is one of the long-haul trunk routes behind our notable flights, flown daily by competing carriers. Flown by UA2, SQ1. It links Singapore Changi Airport in Singapore with San Francisco International Airport in United States. The great-circle distance is about 7,333 nautical miles (8,440 statute miles), so expect roughly 16.5 hours in the air nonstop.

Every night we ask our fare provider for the cheapest one-way economy fare other travellers recently found on this route and record it, with the airline and the seller it was found with. A fare is flagged as a deal when it falls at least 30% below the route's 90-day typical price. Prices are a research starting point, not live availability — the booking links open the itinerary so you can confirm what's on sale right now. business class fares aren't priced by our provider, so that section links to live searches instead.

Fares are approximate, from public sources, and can be stale — always verify before booking.