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Seattle-Tacoma International Airport to Incheon International Airport flight

Explore the cheapest one-way and round-trip flights from Seattle-Tacoma International Airport to Incheon International Airport over the next 90 days, with one-way fares from €347 and round-trip from €648. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        SEA 12:50
        11h 50m
        Direct
        ICN 16:40
        Seattle - Seoul | Fri, Sep 25 | Korean Air
        ICN 21:20
        9h 55m
        Direct
        SEA 15:15
        Seoul - Seattle | Fri, Oct 2 | Asiana Airlines
        €910 €1,155
        21% off
        21% off
        €1,155 €910
      • SEA 13:00
        11h 50m
        Direct
        ICN 16:50
        Seattle - Seoul | Fri, Sep 25 | Delta Air Lines
        ICN 21:20
        9h 55m
        Direct
        SEA 15:15
        Seoul - Seattle | Fri, Oct 2 | Asiana Airlines
        €924 €1,155
        20% off
        20% off
        €1,155 €924
      • SEA 07:18
        21h 2m
        1 stop
        ICN 21:20
        Seattle - Seoul | Sat, Nov 14 | Alaska Airlines
        ICN 19:45
        20h 28m
        1 stop
        SEA 23:13
        Seoul - Seattle | Thu, Nov 19 | Air Premia
        €648 €1,155
        44% off
        44% off
        €1,155 €648
      • SEA 07:18
        21h 2m
        1 stop
        ICN 21:20
        Seattle - Seoul | Sat, Nov 7 | Alaska Airlines
        ICN 19:45
        18h 18m
        1 stop
        SEA 21:03
        Seoul - Seattle | Tue, Nov 10 | Air Premia
        €648
        44% off
        €1,155 €648
      • SEA 06:39
        23h 1m
        1 stop
        ICN 21:40
        Seattle - Seoul | Tue, Oct 27 | Alaska Airlines
        ICN 19:15
        19h 48m
        1 stop
        SEA 23:03
        Seoul - Seattle | Thu, Oct 29 | Air Premia
        €651
        44% off
        €1,155 €651
      • SEA 07:18
        21h 2m
        1 stop
        ICN 21:20
        Seattle - Seoul | Thu, Nov 12 | Alaska Airlines
        ICN 19:45
        20h 28m
        1 stop
        SEA 23:13
        Seoul - Seattle | Thu, Nov 19 | Air Premia
        €710
        39% off
        €1,155 €710
      • SEA 08:54
        19h 26m
        1 stop
        ICN 21:20
        Seattle - Seoul | Tue, Nov 17 | Alaska Airlines
        ICN 19:45
        20h 28m
        1 stop
        SEA 23:13
        Seoul - Seattle | Thu, Nov 19 | Air Premia
        €710
        39% off
        €1,155 €710
      • SEA 06:39
        22h 41m
        1 stop
        ICN 21:20
        Seattle - Seoul | Tue, Nov 3 | Alaska Airlines
        ICN 19:45
        18h 18m
        1 stop
        SEA 21:03
        Seoul - Seattle | Tue, Nov 10 | Air Premia
        €710
        39% off
        €1,155 €710
      • SEA 21:36
        31h 44m
        1 stop
        ICN 21:20
        Seattle - Seoul | Wed, Nov 4 | Alaska Airlines
        ICN 19:45
        18h 18m
        1 stop
        SEA 21:03
        Seoul - Seattle | Tue, Nov 10 | Air Premia
        €710
        39% off
        €1,155 €710
      • SEA 06:39
        21h 31m
        1 stop
        ICN 20:10
        Seattle - Seoul | Fri, Oct 30 | Alaska Airlines
        ICN 19:45
        16h 11m
        1 stop
        SEA 19:56
        Seoul - Seattle | Sun, Nov 1 | Air Premia
        €710
        39% off
        €1,155 €710
      • SEA 06:39
        22h 41m
        1 stop
        ICN 21:20
        Seattle - Seoul | Thu, Nov 5 | Alaska Airlines
        ICN 19:45
        18h 18m
        1 stop
        SEA 21:03
        Seoul - Seattle | Tue, Nov 10 | Air Premia
        €710
        39% off
        €1,155 €710
      • SEA 08:54
        19h 26m
        1 stop
        ICN 21:20
        Seattle - Seoul | Fri, Nov 13 | Alaska Airlines
        ICN 19:45
        20h 28m
        1 stop
        SEA 23:13
        Seoul - Seattle | Thu, Nov 19 | Air Premia
        €712
        38% off
        €1,155 €712
      • SEA 08:54
        19h 26m
        1 stop
        ICN 21:20
        Seattle - Seoul | Tue, Nov 10 | Alaska Airlines
        ICN 19:45
        20h 28m
        1 stop
        SEA 23:13
        Seoul - Seattle | Thu, Nov 12 | Air Premia
        €713
        38% off
        €1,155 €713
      • SEA 09:59
        19h 21m
        1 stop
        ICN 21:20
        Seattle - Seoul | Fri, Nov 6 | Alaska Airlines
        ICN 19:45
        18h 18m
        1 stop
        SEA 21:03
        Seoul - Seattle | Fri, Nov 13 | Air Premia
        €717
        38% off
        €1,155 €717
      • SEA 13:00
        17h 25m
        1 stop
        SEL 14:00
        Seattle - Seoul | Thu, Sep 24 | Normal Airline
        SEL 15:00
        6h
        Direct
        SEA 16:00
        Seoul - Seattle | Sat, Sep 26 | Normal Airline
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      • Cheapest nonstop
        SEA 12:50
        11h 50m
        Direct
        ICN 16:40
        Seattle - Seoul | Mon, Oct 12 | Korean Air
        €512 €640
        20% off
        20% off
        €640 €512
      • SEA 12:50
        11h 50m
        Direct
        ICN 16:40
        Seattle - Seoul | Mon, Sep 28 | Korean Air
        €512 €640
        20% off
        20% off
        €640 €512
      • SEA 21:20
        31h
        1 stop
        ICN 21:20
        Seattle - Seoul | Sat, Nov 14 | Delta Air Lines
        €347 €640
        46% off
        46% off
        €640 €347
      • SEA 14:30
        35h 15m
        1 stop
        ICN 18:45
        Seattle - Seoul | Wed, Nov 4 | WestJet
        €348
        46% off
        €640 €348
      • SEA 09:59
        19h 21m
        1 stop
        ICN 21:20
        Seattle - Seoul | Wed, Oct 28 | Alaska Airlines
        €360
        44% off
        €640 €360
      • SEA 13:50
        38h 30m
        1 stop
        ICN 21:20
        Seattle - Seoul | Tue, Nov 10 | Alaska Airlines
        €365
        43% off
        €640 €365
      • SEA 08:15
        20h 5m
        1 stop
        ICN 21:20
        Seattle - Seoul | Sat, Nov 7 | Alaska Airlines
        €367
        43% off
        €640 €367
      • SEA 14:57
        37h 23m
        1 stop
        ICN 21:20
        Seattle - Seoul | Tue, Nov 10 | Delta Air Lines
        €368
        43% off
        €640 €368
      • SEA 21:30
        32h 10m
        1 stop
        ICN 21:40
        Seattle - Seoul | Sat, Oct 3 | Delta Air Lines
        €370
        42% off
        €640 €370
      • SEA 21:35
        30h 45m
        1 stop
        ICN 21:20
        Seattle - Seoul | Sat, Nov 7 | Delta Air Lines
        €372
        42% off
        €640 €372
      • SEA 06:39
        23h 1m
        1 stop
        ICN 21:40
        Seattle - Seoul | Wed, Oct 21 | Alaska Airlines
        €377
        41% off
        €640 €377
      • SEA 11:45
        18h 40m
        1 stop
        ICN 22:25
        Seattle - Seoul | Mon, Sep 28 | Cathay Pacific
        €377
        41% off
        €640 €377
      • SEA 15:44
        37h 56m
        1 stop
        ICN 21:40
        Seattle - Seoul | Tue, Oct 20 | Alaska Airlines
        €378
        41% off
        €640 €378
      • SEA 13:55
        39h 25m
        1 stop
        ICN 21:20
        Seattle - Seoul | Sat, Oct 31 | Alaska Airlines
        €379
        41% off
        €640 €379
      • SEA 13:00
        17h 25m
        1 stop
        SEL 14:00
        Seattle - Seoul | Thu, Sep 24 | Normal Airline
        Find more flights
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Flight fares from Seattle-Tacoma International Airport to Incheon International Airport are based on average airline prices for the next 3 months, according to Trip.com’s latest data.

Trip.com Price Insights: Flights from Seattle-Tacoma International Airport to Incheon International Airport

What is the cheapest month to fly from Seattle-Tacoma International Airport to Incheon International Airport?

The data is based on the past 12 months and shows the average one-way ticket prices from Seattle-Tacoma International Airport to Incheon International Airport for each month in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest one-way flights from Seattle-Tacoma International Airport to Incheon International Airport are usually in September, with an average price of €404. It is best to avoid December, when the average price can reach €676.

€676
€540
€404
€268
  • €404
    Sep
  • €542
    Oct
  • €435
    Nov
  • €676
    Dec
  • €442
    Jan
  • €439
    Feb
  • €514
    Mar
  • €501
    Apr
  • €573
    May
  • €664
    Jun
  • €497
    Jul
  • €523
    Aug

What is the cheapest month to fly return from Seattle-Tacoma International Airport to Incheon International Airport?

The data is based on the past 12 months and shows the average monthly return fares from Seattle-Tacoma International Airport to Incheon International Airport in the Trip.com database.

Based on Trip.com's data from the past 12 months, February is often the month to find the lowest fares from Seattle-Tacoma International Airport to Incheon International Airport, with an average price of €804. December is usually the most expensive month, with an average price reaching €1,337.

€1,337
€1,071
€804
€538
    Cheapest
  • €841
    Sep
  • €1,110
    Oct
  • €884
    Nov
  • €1,337
    Dec
  • €831
    Jan
  • €804
    Feb
  • €958
    Mar
  • €822
    Apr
  • €1,081
    May
  • €1,320
    Jun
  • €985
    Jul
  • €1,066
    Aug

What is the cheapest day of the week to fly from Seattle-Tacoma International Airport to Incheon International Airport?

The data is based on the past 12 months and shows the average ticket prices from Seattle-Tacoma International Airport to Incheon International Airport for each day of the week in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest departure day from Seattle-Tacoma International Airport to Incheon International Airport is Tuesday, with average prices usually lower than other days. Avoid departing on Saturday as prices are typically highest on that day.

€588
€550
€511
€473
  • €552
    Mon
  • €511
    Tue
  • €546
    Wed
  • €559
    Thu
  • €542
    Fri
  • €588
    Sat
  • €530
    Sun

Which airline offers the cheapest flights from Seattle-Tacoma International Airport to Incheon International Airport?

The cheapest airline flying from Seattle-Tacoma International Airport to Incheon International Airport is Air Canada (from €337) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Air Canada
From €337
Alaska Airlines
From €340
Delta Air Lines
From €347
WestJet
From €348
Cathay Pacific
From €377
China Airlines
From €413
Korean Air
From €414
United Airlines
From €420
Hainan Airlines
From €421
American Airlines
From €434

Find more flights and airlines

What is the flight schedule from Seattle-Tacoma International Airport to Incheon International Airport?

Check the schedule for flights from Seattle to Seoul and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS2009

    Seattle-Tacoma International Airport

    19:55

    SEA

    58m

    Direct

    20:53

    YVR

    S M T W T F S
    Search

  2. TW532

    Vancouver International Airport

    01:15

    YVR

    12h 15m

    Direct

    05:30

    ICN

    - - T - T F S

  3. CX853

    Seattle-Tacoma International Airport

    11:45

    SEA

    14h

    Direct

    16:45

    HKG

    S M T W - F -
    Search

  4. CX430

    Hong Kong International Airport

    17:40

    HKG

    3h 45m

    Direct

    22:25

    ICN

    S M T W T F S

  5. DL1412

    Seattle-Tacoma International Airport

    09:50

    SEA

    2h 22m

    Direct

    12:12

    SFO

    S M T W T F S
    Search

  6. YP112

    San Francisco International Airport

    15:20

    SFO

    13h

    Direct

    21:20

    ICN

    S - T - T - -

  7. AS528

    Seattle-Tacoma International Airport

    09:59

    SEA

    2h 27m

    Direct

    12:26

    SFO

    S M T W T F S
    Search

  8. YP112

    San Francisco International Airport

    15:20

    SFO

    13h

    Direct

    21:20

    ICN

    S - T - T - -

  9. AC8807

    Seattle-Tacoma International Airport

    14:55

    SEA

    1h 7m

    Direct

    16:02

    YVR

    S M T W T F S
    Search

  10. TW532

    Vancouver International Airport

    01:15

    YVR

    12h 15m

    Direct

    05:30

    ICN

    - - T - T F S

  11. AS725

    Seattle-Tacoma International Airport

    07:18

    SEA

    2h 19m

    Direct

    09:37

    SFO

    S M T W T F S
    Search

  12. YP112

    San Francisco International Airport

    15:20

    SFO

    13h

    Direct

    21:20

    ICN

    S - T - T - -

  13. AC8803

    Seattle-Tacoma International Airport

    10:00

    SEA

    1h 10m

    Direct

    11:10

    YVR

    S M T W T F S
    Search

  14. TW532

    Vancouver International Airport

    01:15

    YVR

    12h 15m

    Direct

    05:30

    ICN

    - - T - T F S

  15. DL3893

    Seattle-Tacoma International Airport

    21:20

    SEA

    1h 4m

    Direct

    22:24

    YVR

    S M T W T F S
    Search

  16. WS3572

    Vancouver International Airport

    08:45

    YVR

    1h

    Direct

    09:45

    YLW

    S M T W T F S

  17. WS186

    Kelowna International Airport

    10:55

    YLW

    1h 5m

    Direct

    13:00

    YYC

    S M T W T F S

  18. WS086

    Calgary International Airport

    16:00

    YYC

    11h 45m

    Direct

    18:45

    ICN

    S - T W T F S

  19. DL2635

    Seattle-Tacoma International Airport

    21:25

    SEA

    2h 16m

    Direct

    23:41

    SFO

    S M T W T F S
    Search

  20. YP112

    San Francisco International Airport

    15:20

    SFO

    13h

    Direct

    21:20

    ICN

    S - T - T - -

  21. WS1553

    Seattle-Tacoma International Airport

    10:30

    SEA

    1h 40m

    Direct

    13:10

    YYC

    S - T W T F S
    Search

  22. WS086

    Calgary International Airport

    16:00

    YYC

    11h 45m

    Direct

    18:45

    ICN

    S - T W T F S
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About Seattle-Tacoma International Airport and Incheon International Airport

Learn about Seattle-Tacoma International Airport (SEA) and Incheon International Airport (ICN) — including location, terminals, transportation, and travel tips.

Flight distance8,385.19km
Cheapest one-way ticket price€347
Cheapest return ticket price€648

FAQs for Seattle-Tacoma International Airport to Incheon International Airport Flights

  • How long is the flight from Seattle-Tacoma International Airport to Incheon International Airport?

    Seattle-Tacoma International Airport to Incheon International Airport takes about 11 hours 21 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 6 daily flights from Seattle-Tacoma International Airport (SEA) to Incheon International Airport (ICN).
  • The earliest flight from Seattle-Tacoma International Airport to Incheon International Airport departs at 00:10, and the last departs at 13:35, with about 4 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Seattle-Tacoma International Airport (SEA) to Incheon International Airport (ICN) is quite popular. Without considering departure times or holidays, tickets cost around €641 in December, the most expensive month to book this route.
    • The distance from Incheon International Airport to downtown is about 48km, by taxi about 1 hour.
    • The distance from Gimpo International Airport to downtown is about 15km, by taxi about 30 minutes.
  • Delta Air Lines is a very popular airline operating an average of 1717 flights per month.
  • One-way flights from Seattle-Tacoma International Airport to Incheon International Airport currently start from €347, and round-trip fares start from €648. The current lowest fare is a Delta Air Lines flight departing on Sat, Nov 14; prices may vary depending on availability.
  • Yes. Delta Air Lines, Korean Air, Alaska Airlines and Asiana Airlines operate direct flights from Seattle-Tacoma International Airport to Incheon International Airport, with an average flight time of 11 hours 13 minutes, and around 24 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Seattle-Tacoma International Airport to Incheon International Airport is €590. Prices may vary depending on the departure date, airline, and availability.
  • Seattle-Tacoma International Airport to Incheon International Airport operates around 17 weekly flights, mainly by Delta Air Lines, Korean Air and Asiana Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Seattle-Tacoma International Airport and Incheon International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Find Cheap Flights with Trip.com

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed on this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within the last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.