- Great circle
- 7,032 km
- 4,370 mi
- Estimated in the air
- 9h 14m
- block time
- Furthest from equator
- 64.4°N
- at 25% along
- One lap of Earth
- 17.5%
- of 40,075 km
Of the 292 routes catalogued here, this is the 94th longest.
What the aircraft actually flies over
From Helsinki the path crosses Finland, then Russia, then Mongolia, then China, then North Korea.
The furthest the great circle gets from the equator is 64.4°N, 25% of the way along.
Flying the line that looks straight on a Mercator map — one constant compass bearing — would cover 7,670 km. That is 638 km further, about 9% more, and roughly 48m of extra flying.
Leaving Helsinki the aircraft points north-east (61°); it arrives into Seoul heading south-east (147°). That is 86° of drift without a single turn — the compass moves because the path is a curve on a sphere, not because the aircraft does.
Helsinki to Seoul, asked and answered
- How far is Helsinki to Seoul?
- Helsinki to Seoul (HEL to ICN) is 7,032 km, or 4,370 mi, measured as great circle distance between the two airports.
- How long is the flight from Helsinki to Seoul?
- About 9h 14m 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 Helsinki to Seoul flight take?
- The great circle passes over Finland, then Russia, then Mongolia, then China, then North Korea. It reaches 64.4°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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