Seattle (SEA) to Seoul (ICN) flights
4 airlines fly nonstop from Seattle (SEA) to Seoul (ICN): Alaska Airlines, Asiana Airlines, Delta Air Lines and Korean Air. The two airports are 5,205 miles (8,376 km) apart. Alaska Airlines is in oneworld, Asiana Airlines is in Star Alliance and Delta Air Lines and Korean Air are in SkyTeam. There are also 30 ways to fly it with one stop, through Vancouver, Tokyo and Tokyo and more.
Airlines flying nonstop from SEA to ICN
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- Asiana AirlinesStar Alliance · bookable with 11 programsWho books it
- Delta Air LinesSkyTeam · bookable with 8 programsWho books it
- Korean AirSkyTeam · bookable with 10 programsWho books it
Book SEA to ICN with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Aeromexico RewardsBooks Delta Air Lines, Korean Air
- Air France-KLM Flying BlueBooks Delta Air Lines, Korean Air
- Alaska Atmos RewardsBooks Alaska Airlines, Korean Air
- China Eastern Eastern MilesBooks Delta Air Lines, Korean Air
- Delta SkyMilesBooks Delta Air Lines, Korean Air
- Garuda Indonesia GarudaMilesBooks Delta Air Lines, Korean Air
- Korean Air SKYPASSBooks Delta Air Lines, Korean Air
- SAS EuroBonusBooks Delta Air Lines, Korean Air
- Virgin Atlantic Flying ClubBooks Delta Air Lines, Korean Air
- Air Canada AeroplanBooks Asiana Airlines
- Air New Zealand AirpointsBooks Asiana Airlines
- American AAdvantageBooks Alaska Airlines
- ANA Mileage ClubBooks Asiana Airlines
- Avianca LifeMilesBooks Asiana Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Emirates SkywardsBooks Korean Air
- EVA Air Infinity MileageLandsBooks Asiana Airlines
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- Lufthansa Miles & MoreBooks Asiana Airlines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
- Singapore Airlines KrisFlyerBooks Asiana Airlines
- TAP Miles&GoBooks Asiana Airlines
- Thai Royal Orchid PlusBooks Asiana Airlines
- Turkish Airlines Miles&SmilesBooks Asiana Airlines
- United MileagePlusBooks Asiana Airlines
What SEA to ICN costs in miles
One way, from the Award Flight Pricer's charts (November 2026). Ranges run off-peak to peak; "from" is the floor of a dynamic price.
| Program | Economy | Business | Taxes and fees |
|---|---|---|---|
| Iberia Club | 24,000 | 50,000 | $41–306 |
| British Airways Club | 25,750 | 77,250 | $41–306 |
| Qatar Airways Privilege Club | 25,750 | 77,250 | $41–201 |
| Alaska Atmos Rewards | from 30,000 | from 95,000 | $6 |
| American AAdvantage | 35,000 | 60,000 | $6 |
| JAL Mileage Bank | 37,000 | 60,000 | $6 |
SEA to ICN with one stop
30 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Vancouver (YVR)Air Canada the whole way
- Via Tokyo (NRT)Delta Air Lines, JAL and 1 more, then Jeju Air, Ethiopian Airlines and 11 more
+10 - Via Tokyo (HND)Delta Air Lines and ANA, then Korean Air, Peach Aviation and 1 more
- Via Calgary (YYC)WestJet the whole way
- Via Beijing (PEK)Hainan Airlines, then Air China, Korean Air and 1 more
- Via Shanghai (PVG)Delta Air Lines, then Spring Airlines, China Southern Airlines and 5 more
+4
- Via San Francisco (SFO)United Airlines the whole way
+1 - Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Las Vegas (LAS)Delta Air Lines and American Airlines the whole way+2
- Via Los Angeles (LAX)American Airlines, Alaska Airlines and 3 more, then Korean Air, Asiana Airlines and 1 more+2YP
- Via Taipei (TPE)EVA Air and China Airlines the whole way
+1
+6 - Via Honolulu (HNL)Alaska Airlines and Delta Air Lines, then Korean Air and Air PremiaYP
- Via Chongqing (CKG)Hainan Airlines, then Air China and Asiana Airlines
- Via Minneapolis (MSP)Delta Air Lines the whole way
- Via Hong Kong (HKG)Cathay Pacific the whole way
+7
SEA to ICN: common questions
Which airlines fly nonstop from SEA to ICN?
Alaska Airlines (oneworld), Asiana Airlines (Star Alliance), Delta Air Lines (SkyTeam) and Korean Air (SkyTeam) fly nonstop from Seattle (SEA) to Seoul (ICN).
How far is Seattle from Seoul by plane?
Seattle (SEA) and Seoul (ICN) are 5,205 miles (8,376 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book SEA to ICN award flights?
29 programs can book at least one of the nonstop airlines: Aeromexico Rewards, Air France-KLM Flying Blue, Alaska Atmos Rewards, China Eastern Eastern Miles, Delta SkyMiles, Garuda Indonesia GarudaMiles, Korean Air SKYPASS, SAS EuroBonus and 21 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does SEA to ICN cost?
In the Award Flight Pricer it starts at 24,000 miles in economy with Iberia Club and 50,000 in business with Iberia Club, one way, plus taxes and fees. Prices change with season and availability, so search the dates you want before you transfer points.
Where can I connect between Seattle and Seoul?
The most direct connections are through Vancouver (YVR), Tokyo (NRT), Tokyo (HND), Calgary (YYC) and Beijing (PEK). On 18 of them the same airline flies both flights, for example Air Canada through Vancouver.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.