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

Korean Air, Delta Air Lines, Alaska Airlines, and Asiana Airlines fly nonstop between Seattle (SEA) and Seoul (ICN), roughly 30 times a week. The timetable below shows the nonstop scheduled at 11h 50m to 12h 20m for the 5,204 miles. 2LNR checks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines flights on this route, so you can see which departures have space before you book.

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

Updated .

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30
Flights a week, 4-week average
11h 50m to 12h 20m
Scheduled flight time
5,204 mi
Nonstop distance
Free
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Seattle to Seoul flight schedule

Scheduled nonstop departures for SEA to ICN starting October 23, 2026, last checked against our schedule feed on October 18, 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
KE 48Korean Air00:1004:3012h 20mBoeing 787-9 Dreamliner
OZ 271Asiana Airlines00:1004:3012h 20mBoeing 777-200LR
KE 42Korean Air12:5016:4011h 50mBoeing 787-10 Dreamliner
DL 197Delta Air Lines13:0016:5011h 50mAirbus A350-900
AS 119Alaska Airlines, Inc.13:3517:3011h 55mBoeing 787-9 Dreamliner
KE 48Korean Air00:1004:3012h 20mBoeing 787-9 Dreamliner
OZ 271Asiana Airlines00:1004:3012h 20mBoeing 777-200LR
DL 197Delta Air Lines11:3515:5012h 15mAirbus A350-900
KE 42Korean Air12:5016:4011h 50mBoeing 787-10 Dreamliner
AS 119Alaska Airlines, Inc.13:4017:3511h 55mBoeing 787-9 Dreamliner
KE 42Korean Air12:0015:5511h 55mBoeing 787-10 Dreamliner
DL 197Delta Air Lines13:3017:4512h 15mAirbus A350-900
AS 119Alaska Airlines, Inc.13:4017:3511h 55mBoeing 787-9 Dreamliner
KE 48Korean Air00:1004:2012h 10mBoeing 787-9 Dreamliner
OZ 271Asiana Airlines00:1004:2012h 10mBoeing 777-200LR
KE 42Korean Air12:0015:5511h 55mBoeing 787-10 Dreamliner
DL 197Delta Air Lines13:3017:4512h 15mAirbus A350-900
AS 119Alaska Airlines, Inc.13:3517:3011h 55mBoeing 787-9 Dreamliner
KE 48Korean Air00:1004:2012h 10mBoeing 787-9 Dreamliner
OZ 271Asiana Airlines00:1004:2012h 10mBoeing 777-200LR
KE 42Korean Air12:0015:5511h 55mBoeing 787-10 Dreamliner
DL 197Delta Air Lines13:3017:4512h 15mAirbus A350-900
KE 48Korean Air00:1004:2012h 10mBoeing 787-9 Dreamliner
OZ 271Asiana Airlines00:1004:2012h 10mBoeing 777-200LR
KE 42Korean Air12:0015:5511h 55mBoeing 787-10 Dreamliner
DL 197Delta Air Lines13:3017:4512h 15mAirbus A350-900
AS 119Alaska Airlines, Inc.13:4017:3511h 55mBoeing 787-9 Dreamliner
KE 42Korean Air12:0015:5511h 55mBoeing 787-10 Dreamliner
DL 197Delta Air Lines13:3017:4512h 15mAirbus A350-900
AS 119Alaska Airlines, Inc.13:4017:3511h 55mBoeing 787-9 Dreamliner

Showing all 30 scheduled SEA to ICN departures across 7 days with service, starting October 23, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every SEA to ICN date on the interactive map

Aircraft on the Seattle to Seoul nonstop

In the schedule table on this page, Korean Air flies the Boeing 787-10 Dreamliner and the Boeing 787-9 Dreamliner. Delta Air Lines flies the Airbus A350-900. Alaska Airlines flies the Boeing 787-9 Dreamliner. Asiana Airlines flies the Boeing 777-200LR. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on SEA to ICN departures

2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines, 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.

In the 7 days to October 19, 2026, 2LNR checked award space on Seattle to Seoul departures from October 19 to November 1. Delta Air Lines had space open on 14 of 14 dates checked and Alaska Airlines on 0 of 10.

See real availability

Confirmed upgrade or award seats by date on the SEA to ICN departures 2LNR tracks, checked against live inventory so you know what's open before you book.

Set an alert

Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're 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. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See SEA to ICN on the interactive map →

Frequently asked questions about SEA to ICN

How long is the flight from Seattle (SEA) to Seoul (ICN)?
Scheduled flight times from Seattle (SEA) to Seoul (ICN) run from 11h 50m to 12h 20m across the departures in the schedule table on this page. The nonstop covers about 5,204 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from SEA to ICN?
Korean Air, Delta Air Lines, Alaska Airlines, and Asiana Airlines fly SEA to ICN nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines.
How many flights a week are there from SEA to ICN?
About 30 nonstop flights a week run between Seattle (SEA) and Seoul (ICN) in the current schedule, operated by Korean Air, Delta Air Lines, Alaska Airlines, 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 13:40, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate SEA to ICN nonstop?
In the schedule table on this page, SEA to ICN nonstops fly as KE 42 and KE 48 on Korean Air; DL 197 on Delta Air Lines; AS 119 on Alaska Airlines; and OZ 271 on Asiana Airlines. The table lists each departure by date with its times 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 Delta Air Lines and Alaska Airlines, 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's open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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