- Great circle
- 7,711 km
- 4,792 mi
- Estimated in the air
- 10h 05m
- block time
- Furthest from equator
- 54.4°N
- at 36% along
- One lap of Earth
- 19.2%
- of 40,075 km
Of the 292 routes catalogued here, this is the 86th longest.
What the aircraft actually flies over
From Seattle the path crosses the United States, then 7,403 km of open water.
The furthest the great circle gets from the equator is 54.4°N, 36% of the way along.
Flying the line that looks straight on a Mercator map — one constant compass bearing — would cover 8,223 km. That is 511 km further, about 7% more, and roughly 38m of extra flying.
Leaving Seattle the aircraft points north-west (301°); it arrives into Tokyo heading south-west (226°). That is 75° of drift without a single turn — the compass moves because the path is a curve on a sphere, not because the aircraft does.
SEA
Seattle–Tacoma
Seattle, United States · North America
47.4°N, 122.3°W
Seattle to Tokyo, asked and answered
- How far is Seattle to Tokyo?
- Seattle to Tokyo (SEA to HND) is 7,711 km, or 4,792 mi, measured as great circle distance between the two airports.
- How long is the flight from Seattle to Tokyo?
- About 10h 05m 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 Seattle to Tokyo flight take?
- The great circle passes over the United States, then 7,403 km of open water. It reaches 54.4°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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