- Great circle
- 13,582 km
- 8,439 mi
- Estimated in the air
- 17h 23m
- block time
- Furthest from equator
- 47.4°N
- at 28% along
- One lap of Earth
- 33.9%
- of 40,075 km
Of the 292 routes catalogued here, this is the 17th longest.
What the aircraft actually flies over
From San Francisco the path crosses 13,514 km of open water.
The furthest the great circle gets from the equator is 47.4°N, 28% of the way along.
Flying the line that looks straight on a Mercator map — one constant compass bearing — would cover 14,292 km. That is 711 km further, about 5% more, and roughly 53m of extra flying.
Leaving San Francisco the aircraft points north-west (301°); it arrives into Singapore heading south-west (223°). That is 79° of drift without a single turn — the compass moves because the path is a curve on a sphere, not because the aircraft does.
SFO
San Francisco
San Francisco, United States · North America
37.6°N, 122.4°W
San Francisco to Singapore, asked and answered
- How far is San Francisco to Singapore?
- San Francisco to Singapore (SFO to SIN) is 13,582 km, or 8,439 mi, measured as great circle distance between the two airports.
- How long is the flight from San Francisco to Singapore?
- About 17h 23m in the air. That is an estimate from the distance at a typical airliner block speed, plus half an hour for taxi, climb and descent; published schedules vary with winds and routing.
- What route does a San Francisco to Singapore flight take?
- The great circle passes over 13,514 km of open water. It reaches 47.4°N at its furthest from the equator.
Where these numbers come from
Distances are computed from the two airports’ own coordinates, not looked up from published routes. Times are estimates, not schedules.
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