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JFK → SEA

New York to Seattle: distance, flight time and the route it really takes

John F. Kennedy to Seattle–Tacoma is 3,887 km of great circle — 2,415 mi — and an estimated 5h 20m in the air. Both ends are in North America.

Great circle
3,887 km
2,415 mi
Estimated in the air
5h 20m
block time
Furthest from equator
47.8°N
at 82% along
One lap of Earth
9.7%
of 40,075 km
The New York to Seattle route drawn as a great circle arc on a globe

What the aircraft actually flies over

From New York the path crosses the United States, then Canada, then the United States.

The furthest the great circle gets from the equator is 47.8°N, 82% of the way along.

Flying the line that looks straight on a Mercator map — one constant compass bearing — would cover 3,946 km. That is 59 km further, about 2% more, and roughly 4m of extra flying.

From

JFK

John F. Kennedy

New York, United States · North America

40.6°N, 73.8°W

Flights to New York
To

SEA

Seattle–Tacoma

Seattle, United States · North America

47.4°N, 122.3°W

Flights to Seattle

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.

Why the shortest path is a curve →

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