- Great circle
- 8,373 km
- 5,203 mi
- Estimated in the air
- 10h 54m
- block time
- Furthest from equator
- 58.9°N
- at 41% along
- One lap of Earth
- 20.9%
- of 40,075 km
Of the 292 routes catalogued here, this is the 75th longest.
What the aircraft actually flies over
From Seattle the path crosses Canada, then 1,737 km of open water, then the United States, then 2,428 km of open water, then Russia, then 942 km of open water, then Russia, then 607 km of open water, then South Korea.
The furthest the great circle gets from the equator is 58.9°N, 41% of the way along.
Flying the line that looks straight on a Mercator map — one constant compass bearing — would cover 9,162 km. That is 789 km further, about 9% more, and roughly 59m of extra flying.
Leaving Seattle the aircraft points north-west (310°); it arrives into Seoul heading south-west (221°). That is 89° 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 Seoul, asked and answered
- How far is Seattle to Seoul?
- Seattle to Seoul (SEA to ICN) is 8,373 km, or 5,203 mi, measured as great circle distance between the two airports.
- How long is the flight from Seattle to Seoul?
- About 10h 54m 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 Seoul flight take?
- The great circle passes over Canada, then 1,737 km of open water, then the United States, then 2,428 km of open water, then Russia, then 942 km of open water, then Russia, then 607 km of open water, then South Korea. It reaches 58.9°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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