✈ SEA → ICN

10H 43M, 5,204 MI. THE AIRLINE OWES YOU SOMETHING. THEY WON'T GIVE IT.

Flight time
10h 43m
Distance
5,204 mi
Or
8,375 km
Jet lag
16h

Flight from Seattle to Seoul

From Sea-Tac (SEA), USA North America  →  Incheon (ICN), South Korea Asia

↔ Flying the other way? Seoul → Seattle

How long is the flight from Seattle to Seoul?

A nonstop flight from Seattle (SEA) to Seoul (ICN) 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

Seattle timezone

UTC-7

America/Los_Angeles

Seoul timezone

UTC+9

Asia/Seoul

Time difference

+16h

16 hours ahead

Jet lag (rough)

~16d

Eastward — worse

CO₂ footprint per passenger

Economy class, single passenger. Source: DEFRA 2024 averages.

✈ Flight 1240 kg CO₂
🚗 Car (alone) 1432 kg CO₂
🚆 Train 343 kg CO₂

This flight emits roughly 3.6× the CO₂ of an equivalent train trip and 0.9× a car driven alone over the same distance.