San Francisco (SFO) → Singapore (SIN)

San Francisco International Airport to Singapore Changi 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
SFOSIN

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 11h ago
$325one-way

Singapore Airlines · nonstop · 17h 25m · travel Feb 22 · sold via Farera

Book on Aviasales· $325 ↗Compare on Google Flights ↗Compare on Skyscanner ↗
Lowest (90d)
$268
Typical (median)
$281
Highest (90d)
$325
Checks
56
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 56 daily checks — where the low fares were, not every date.

Lowest fare by travel month
Nov 2026$26834×
Feb 2027$2827×
Mar 2027$31215×
Typical fare by day of travel
Fricheapest$27634×
Sun$2822×
Tue$31314×
Mon$3255×
CheckedFareAirlineStopsTravelSold via
2026-10-24$325Singapore AirlinesnonstopFeb 22FareraBook ↗
2026-10-23$325Singapore AirlinesnonstopFeb 22FareraBook ↗
2026-10-22$325Singapore AirlinesnonstopFeb 22FareraBook ↗
2026-10-22$325Singapore AirlinesnonstopFeb 22FareraBook ↗
2026-10-21$325Singapore AirlinesnonstopFeb 22FareraBook ↗
2026-10-20$313Singapore AirlinesnonstopMar 16FareraBook ↗
2026-10-19$313Singapore AirlinesnonstopMar 16FareraBook ↗
2026-10-19$313Singapore AirlinesnonstopMar 16—Book ↗
2026-10-18$313Singapore AirlinesnonstopMar 16—Book ↗
2026-10-17$313Singapore AirlinesnonstopMar 16—Book ↗
2026-10-16$313Singapore AirlinesnonstopMar 16—Book ↗
2026-10-15$313Singapore AirlinesnonstopMar 16—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 SFO → SIN:

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.

  • Singapore Airlines ×56

Notable flights on this route

  • UA1 United Airlines — United's flight number one, San Francisco to Singapore nonstop.
  • SQ2 Singapore Airlines — Singapore Airlines number two, San Francisco to Singapore via Hong Kong.

About this route

San Francisco (SFO) to Singapore (SIN) is one of the long-haul trunk routes behind our notable flights, flown daily by competing carriers. Flown by UA1, SQ2. It links San Francisco International Airport in United States with Singapore Changi Airport in Singapore. 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.