Seattle to Seoul (SEA-ICN): nonstop upgrade & award space

Alaska Airlines, Korean Air, Delta Air Lines, and Asiana Airlines fly nonstop between Seattle (SEA) and Seoul (ICN), roughly 31 times a week. Long-haul cabins on a corridor this busy are large but never idle: premium cabin inventory reshuffles around every schedule change, and the best dates go first. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, on every SEA to ICN departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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31
Nonstop flights a week
5,204 mi
Nonstop distance
Free
To get started

Seattle to Seoul flight schedule

Scheduled nonstop departures for SEA to ICN, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Seattle (SEA) to Seoul (ICN)
Date Flight Airline Departs SEA Arrives ICN Duration Aircraft
OZ 271Asiana Airlines00:1004:0011h 50m77L
KE 42Korean Air12:5016:4011h 50m781
DL 197Delta Air Lines13:0016:5011h 50m359
OZ 271Asiana Airlines00:1004:0011h 50m77L
KE 42Korean Air12:5016:4011h 50m781
DL 197Delta Air Lines13:0016:5011h 50m359
AS 119Alaska Airlines, Inc.13:3517:3011h 55m789
AS 171Alaska Airlines, Inc.13:3517:3011h 55m789
KE 42Korean Air12:5016:4011h 50m781
DL 197Delta Air Lines13:0016:5011h 50m359
AS 119Alaska Airlines, Inc.13:3517:3011h 55m789
AS 171Alaska Airlines, Inc.13:3517:3011h 55m789
OZ 271Asiana Airlines00:1004:0011h 50m77L
KE 42Korean Air12:5016:4011h 50m781
DL 197Delta Air Lines13:0016:5011h 50m359
AS 119Alaska Airlines, Inc.13:3517:3011h 55m789
AS 171Alaska Airlines, Inc.13:3517:3011h 55m789
OZ 271Asiana Airlines00:1004:0011h 50m77L
KE 42Korean Air12:5016:4011h 50m781
DL 197Delta Air Lines13:0016:5011h 50m359
AS 119Alaska Airlines, Inc.13:3517:3011h 55m789
AS 171Alaska Airlines, Inc.13:3517:3011h 55m789
KE 42Korean Air12:5016:4011h 50m781
DL 197Delta Air Lines13:0016:5011h 50m359
AS 119Alaska Airlines, Inc.13:3517:3011h 55m789
AS 171Alaska Airlines, Inc.13:3517:3011h 55m789
OZ 271Asiana Airlines00:1004:0011h 50m77L
KE 42Korean Air12:5016:4011h 50m781
DL 197Delta Air Lines13:0016:5011h 50m359
AS 119Alaska Airlines, Inc.13:3517:3011h 55m789
AS 171Alaska Airlines, Inc.13:3517:3011h 55m789

Showing all 31 scheduled SEA to ICN departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every SEA to ICN date on the interactive map

Confirmed upgrade & award space on SEA to ICN departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, segment by segment and date by date. Open the calendar for Seattle to Seoul to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each SEA to ICN departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SEA to ICN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seattle to Seoul nonstop

Carriers operating SEA to ICN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See SEA to ICN on the interactive map →

Frequently asked questions about SEA to ICN

How far is Seoul from Seattle?
SEA to ICN covers about 5,204 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from SEA to ICN?
Alaska Airlines, Korean Air, Delta Air Lines, and Asiana Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines.
How many flights a week are there from SEA to ICN?
About 31 nonstop flights a week run between Seattle and Seoul in the current schedule, operated by Alaska Airlines, Korean Air, Delta Air Lines, and Asiana Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SEA to ICN depart?
Scheduled SEA to ICN nonstops in the next 7 days with service leave between 00:10 and 13:35, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on SEA to ICN?
Open the SEA to ICN route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss SEA to ICN upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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