How long is the flight from Seattle to Seoul?

SEA–ICN is 11h 55m nonstop, covering 8,373 km (5,203 mi).

Which airlines fly nonstop from Seattle to Seoul?

Air Incheon, Alaska Airlines, Delta Air Lines, Korean Air operate this route nonstop.

How much is a flight from Seattle to Seoul?

One-way fares on SEA–ICN recently started from $356 ($844 nonstop). The lowest recent fare is for travel in December 2026. Fares change daily, so check current prices before booking.

How often do flights run from Seattle to Seoul?

The route is served 7 days a week (24 scheduled departures).

Flights from Seattle to Seoul

SEAICN

Seattle–Tacoma International Airport (Seattle, United States) → Incheon International Airport (Seoul, South Korea)

Also known as Seoul.

Nonstop: 11h 55m
Distance: 8,373 km
Frequency: 7×/week
One-way from: $356
Airlines: Air Incheon, Alaska Airlines, Delta Air Lines, Korean Air

Book on Aviasales

Fares by month

One-way, per person

Lowest fares Aviasales travelers found in recent searches; some may include a connection. Prices change often — tap a month to see live fares.

Weekly schedule

Monday

KE4800:10→05:2012h 10mKorean Air
KE4211:00→15:5511h 55mKorean Air
DL19712:30→17:4512h 15mDelta Air Lines

Tuesday

KE4800:10→05:2012h 10mKorean Air
KE4211:00→15:5511h 55mKorean Air
DL19712:30→17:4512h 15mDelta Air Lines

Wednesday

KE4800:10→05:2012h 10mKorean Air
KE4211:00→15:5511h 55mKorean Air
DL19712:30→17:4512h 15mDelta Air Lines
AS11912:40→17:3511h 55mAlaska Airlines

Thursday

KE4211:00→15:5511h 55mKorean Air
DL19712:30→17:4512h 15mDelta Air Lines
AS11912:40→17:3511h 55mAlaska Airlines

Friday

KE4800:10→05:2012h 10mKorean Air
KE4211:00→15:5511h 55mKorean Air
DL19712:30→17:4512h 15mDelta Air Lines
AS11912:40→17:3511h 55mAlaska Airlines

Saturday

KE4800:10→05:2012h 10mKorean Air
KE4211:00→15:5511h 55mKorean Air
DL19712:30→17:4512h 15mDelta Air Lines
AS11912:40→17:3511h 55mAlaska Airlines

Sunday

KE4211:00→15:5511h 55mKorean Air
DL19712:30→17:4512h 15mDelta Air Lines
AS11912:40→17:3511h 55mAlaska Airlines

Seattle to Seoul — frequently asked

How long is the flight from Seattle to Seoul?: SEA–ICN is 11h 55m nonstop, covering 8,373 km (5,203 mi).
Which airlines fly nonstop from Seattle to Seoul?: Air Incheon, Alaska Airlines, Delta Air Lines, Korean Air operate this route nonstop.
How much is a flight from Seattle to Seoul?: One-way fares on SEA–ICN recently started from $356 ($844 nonstop). The lowest recent fare is for travel in December 2026. Fares change daily, so check current prices before booking.
How often do flights run from Seattle to Seoul?: The route is served 7 days a week (24 scheduled departures).