Direct (nonstop) flights from Seattle to Seoul
5 airlines fly nonstop from Seattle Tacoma International (SEA) to Incheon International Airport (ICN). It's 5,217 miles (8,396 km), about 11h 55m in the air. Operated by Alaska Airlines, Delta Air Lines, Hawaiian Airlines and others.
Alaska Airlines
Delta Air Lines
Hawaiian Airlines
Korean Air
Asiana Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AS
Alaska Airlines
DL
Delta Air Lines
HA
Hawaiian Airlines
OZ
Asiana Airlines
Alternative Routes
Other ways to fly from Seattle to Seoul with one stop · direct emits 798 kg CO₂ per passenger
Looking for the return flight?
ICN → SEA: Flights from Seoul to SeattleOther direct flights from Seattle
Direct flights from Seoul (ICN)
Frequently Asked Questions
How long is the direct flight from Seattle to Seoul?
A nonstop flight from Seattle (SEA) to Seoul (ICN) takes approximately 11 hours and 55 minutes. The distance is 5,217 miles (8,396 km).
Which airlines fly nonstop from Seattle to Seoul?
5 airlines: Alaska Airlines, Delta Air Lines, Hawaiian Airlines, Korean Air, Asiana Airlines.
Is there a nonstop flight from Seattle to Seoul?
Yes. 5 airlines: Alaska Airlines, Delta Air Lines, Hawaiian Airlines, Korean Air, Asiana Airlines.
How far is Seattle from Seoul?
The flight distance from Seattle to Seoul is 5,217 miles (8,396 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to Tokyo.
What is the time difference between Seattle and Seoul?
Seoul is 16 hours ahead of Seattle. (America/Los_Angeles vs Asia/Seoul.)
Will I experience jet lag flying from Seattle to Seoul?
Probably — 16-hour time difference means significant jet lag. Expect about 1 day of adjustment per hour of shift. Flying eastward is generally harder to adjust to.
What type of aircraft flies from Seattle to Seoul?
At 11h 55m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
Do I need a visa to travel from USA to Republic of Korea?
Depends on your passport. Check with the Republic of Korea embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seattle to Seoul?
Roughly 798 kg CO2 per passenger one-way. That's about the same as driving 3,990 km.
Is the return flight from Seoul to Seattle also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seattle to Seoul?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. For long-haul, booking 2-3 months out tends to help. Use "Check Prices" above to compare.
How early should I arrive at Seattle Tacoma International for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.