- Great circle
- 12,382 km
- 7,694 mi
- Estimated in the air
- 15h 53m
- block time
- Furthest from equator
- 75.6°N
- at 54% along
- One lap of Earth
- 30.9%
- of 40,075 km
What the aircraft actually flies over
From Delhi the path crosses India, then China, then Kazakhstan, then Russia, then 1,703 km of open water, then the United States, then Canada, then the United States, then 1,981 km of open water, then the United States.
The great circle reaches 75.6°N, inside the Arctic circle — which is why the route looks like a detour over the top of the world on a flat map, and like the obvious line on a globe.
Flying the line that looks straight on a Mercator map — one constant compass bearing — would cover 14,961 km. That is 2,578 km further, about 21% more, and roughly 3h 12m of extra flying.
SFO
San Francisco
San Francisco, United States · North America
37.6°N, 122.4°W
Flights to San Francisco →How these numbers are worked out
The distance is the great circle between the two airports’ real coordinates — the shortest path over a sphere, and the measure airlines and loyalty programmes use. It is computed, not looked up from a table of published routes.
The time is an estimate derived from that distance, using the same arithmetic Orbit uses when you log a flight without timestamps: a typical airliner block speed of 500 mph plus thirty minutes for taxi, climb and descent. Real schedules run longer or shorter depending on winds, air traffic control routing and how far the gate is from the runway. Aircraft also do not fly perfect great circles — jet streams, airspace closures and ETOPS limits all bend the path, usually by a few percent.
Flown this one?
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