✈ ICN → SEA
10H 43M FLIGHT. YOU WILL CRY DURING A ROMCOM. IT'S FINE.
Flight from Seoul to Seattle
From Incheon (ICN), South Korea Asia → Sea-Tac (SEA), USA North America
How long is the flight from Seoul to Seattle?
A nonstop flight from Seoul (ICN) to Seattle (SEA) takes about 10 hours 43 minutes, covering a great-circle distance of 5,204 miles (8,375 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
10h 43m
Nonstop, scheduled
Distance
5,204 mi
8,375 km · great-circle
Avg speed
781 km/h
Door-to-door including taxi
Time zones & jet lag
Seoul timezone
UTC+9
Asia/Seoul
Seattle timezone
UTC-7
America/Los_Angeles
Time difference
-16h
16 hours behind
Jet lag (rough)
~11.2d
Westward — easier
CO₂ footprint per passenger
Economy class, single passenger. Source: DEFRA 2024 averages.
This flight emits roughly 3.6× the CO₂ of an equivalent train trip and 0.9× a car driven alone over the same distance.