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Time difference: Seattle to Seoul
SEA (Seattle Tacoma International Airport) → ICN (Incheon International Airport)
+16h
Seoul is ahead
16d
est. jet-lag recovery, eastbound
Reading the clocks
When it's noon in Seattle, it's 4:00 AM in Seoul. Good for planning calls home or coordinating with people on the other end.
Jet lag outlook
Significant jet lagCrossing 16 time zones eastbound — plan roughly 16 days to feel fully adjusted. Shifting your sleep schedule 3 days before departure helps.
Frequently asked questions
What is the time difference between Seattle and Seoul?
Seoul is 16 hours ahead of Seattle.
How bad will my jet lag be?
Crossing 16 time zones eastbound typically takes 16 days to fully adjust to. Eastbound trips (traveling against your body clock) tend to feel worse than the same distance westbound.
What is the flight time from SEA to ICN?
The nonstop flight distance is 5,203 miles. See the full distance and flight-time breakdown for exact timing.
What's the best way to book around jet lag?
Overnight eastbound flights that land in the morning let you push through to local bedtime and adjust faster. Call CheapoTrav — our agents know which schedules on this route land at the best local time, plus unpublished phone-only fares.