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Seattle Tacoma Intl. Airport to Incheon Intl. Airport flight

Explore the cheapest one-way and round-trip flights from Seattle Tacoma Intl. Airport to Incheon Intl. Airport over the next 90 days, with one-way fares from €335 and round-trip from €652. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        SEA 12:50 PM
        11h 50m
        Nonstop
        ICN 4:40 PM
        Seattle - Seoul | Mon, Oct 19 | Korean Air
        ICN 4:10 PM
        9h 55m
        Nonstop
        SEA 10:05 AM
        Seoul - Seattle | Mon, Oct 26 | Korean Air
        €859 €1,268
        32% off
        32% off
        €1,268 €859
      • SEA 12:50 PM
        11h 50m
        Nonstop
        ICN 4:40 PM
        Seattle - Seoul | Fri, Sep 25 | Korean Air
        ICN 4:40 PM
        10h
        Nonstop
        SEA 10:40 AM
        Seoul - Seattle | Tue, Sep 29 | Korean Air
        €900 €1,268
        28% off
        28% off
        €1,268 €900
      • SEA 7:18 AM
        21h 2m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Sun, Nov 8 | Alaska Airlines
        ICN 7:45 PM
        20h 28m
        1 stop
        SEA 11:13 PM
        Seoul - Seattle | Fri, Nov 13 | Air Premia
        €652 €1,268
        49% off
        49% off
        €1,268 €652
      • SEA 7:18 AM
        21h 2m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Sun, Nov 1 | Alaska Airlines
        ICN 7:45 PM
        18h 18m
        1 stop
        SEA 9:03 PM
        Seoul - Seattle | Wed, Nov 4 | Air Premia
        €652
        49% off
        €1,268 €652
      • SEA 7:18 AM
        21h 2m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Fri, Nov 6 | Alaska Airlines
        ICN 7:45 PM
        20h 28m
        1 stop
        SEA 11:13 PM
        Seoul - Seattle | Fri, Nov 13 | Air Premia
        €714
        44% off
        €1,268 €714
      • SEA 8:54 AM
        19h 26m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Wed, Nov 11 | Alaska Airlines
        ICN 7:45 PM
        20h 28m
        1 stop
        SEA 11:13 PM
        Seoul - Seattle | Fri, Nov 13 | Air Premia
        €714
        44% off
        €1,268 €714
      • SEA 6:39 AM
        23h 1m
        1 stop
        ICN 9:40 PM
        Seattle - Seoul | Wed, Oct 21 | Alaska Airlines
        ICN 7:45 PM
        19h 18m
        1 stop
        SEA 11:03 PM
        Seoul - Seattle | Mon, Oct 26 | Air Premia
        €714
        44% off
        €1,268 €714
      • SEA 6:39 AM
        22h 41m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Wed, Oct 28 | Alaska Airlines
        ICN 7:45 PM
        18h 18m
        1 stop
        SEA 9:03 PM
        Seoul - Seattle | Wed, Nov 4 | Air Premia
        €714
        44% off
        €1,268 €714
      • SEA 9:36 PM
        31h 44m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Thu, Oct 29 | Alaska Airlines
        ICN 7:45 PM
        18h 18m
        1 stop
        SEA 9:03 PM
        Seoul - Seattle | Wed, Nov 4 | Air Premia
        €714
        44% off
        €1,268 €714
      • SEA 6:39 AM
        21h 31m
        1 stop
        ICN 8:10 PM
        Seattle - Seoul | Sat, Oct 24 | Alaska Airlines
        ICN 7:45 PM
        16h 11m
        1 stop
        SEA 7:56 PM
        Seoul - Seattle | Mon, Oct 26 | Air Premia
        €714
        44% off
        €1,268 €714
      • SEA 6:39 AM
        22h 41m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Fri, Oct 30 | Alaska Airlines
        ICN 7:45 PM
        18h 18m
        1 stop
        SEA 9:03 PM
        Seoul - Seattle | Wed, Nov 4 | Air Premia
        €714
        44% off
        €1,268 €714
      • SEA 8:54 AM
        19h 26m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Sat, Nov 7 | Alaska Airlines
        ICN 7:45 PM
        20h 28m
        1 stop
        SEA 11:13 PM
        Seoul - Seattle | Fri, Nov 13 | Air Premia
        €716
        44% off
        €1,268 €716
      • SEA 8:54 AM
        19h 26m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Wed, Nov 4 | Alaska Airlines
        ICN 7:45 PM
        20h 28m
        1 stop
        SEA 11:13 PM
        Seoul - Seattle | Fri, Nov 6 | Air Premia
        €717
        43% off
        €1,268 €717
      • SEA 9:59 AM
        19h 21m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Sat, Oct 31 | Alaska Airlines
        ICN 7:45 PM
        18h 18m
        1 stop
        SEA 9:03 PM
        Seoul - Seattle | Sat, Nov 7 | Air Premia
        €721
        43% off
        €1,268 €721
      • SEA 1:00 PM
        17h 25m
        1 stop
        SEL 2:00 PM
        Seattle - Seoul | Sat, Sep 26 | Normal Airline
        SEL 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Seoul - Seattle | Mon, Sep 28 | Normal Airline
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      • Cheapest nonstop
        SEA 12:50 PM
        11h 50m
        Nonstop
        ICN 4:40 PM
        Seattle - Seoul | Wed, Oct 14 | Korean Air
        €429 €606
        28% off
        28% off
        €606 €429
      • SEA 12:10 AM
        12h 20m
        Nonstop
        ICN 4:30 AM
        Seattle - Seoul | Tue, Oct 13 | Korean Air
        €430 €606
        28% off
        28% off
        €606 €430
      • SEA 2:45 PM
        37h 35m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Sat, Nov 7 | Delta Air Lines
        €335 €606
        45% off
        45% off
        €606 €335
      • SEA 9:20 PM
        31h
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Sat, Nov 14 | Delta Air Lines
        €349
        42% off
        €606 €349
      • SEA 9:36 PM
        31h 44m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Thu, Oct 29 | Alaska Airlines
        €359
        41% off
        €606 €359
      • SEA 8:54 AM
        19h 26m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Wed, Nov 4 | Alaska Airlines
        €359
        41% off
        €606 €359
      • SEA 9:59 AM
        19h 21m
        1 stop
        ICN 9:20 PM
        Seattle - Seoul | Wed, Oct 28 | Alaska Airlines
        €362
        40% off
        €606 €362
      • SEA 3:15 PM
        22h 15m
        1 stop
        ICN 5:30 AM
        Seattle - Seoul | Thu, Oct 29 | Air Canada
        €372
        39% off
        €606 €372
      • SEA 11:55 AM
        40h 30m
        1 stop
        ICN 8:25 PM
        Seattle - Seoul | Thu, Oct 22 | Hainan Airlines
        €376
        38% off
        €606 €376
      • SEA 9:45 PM
        15h 45m
        1 stop
        ICN 5:30 AM
        Seattle - Seoul | Thu, Oct 29 | Delta Air Lines
        €378
        38% off
        €606 €378
      • SEA 11:45 AM
        18h 40m
        1 stop
        ICN 10:25 PM
        Seattle - Seoul | Mon, Sep 28 | Cathay Pacific
        €378
        38% off
        €606 €378
      • SEA 3:10 PM
        33h 35m
        1 stop
        ICN 5:45 PM
        Seattle - Seoul | Fri, Nov 6 | WestJet
        €378
        38% off
        €606 €378
      • SEA 12:55 PM
        17h 30m
        1 stop
        ICN 10:25 PM
        Seattle - Seoul | Mon, Oct 26 | Alaska Airlines
        €380
        37% off
        €606 €380
      • SEA 11:55 AM
        40h 30m
        1 stop
        ICN 8:25 PM
        Seattle - Seoul | Thu, Oct 15 | Hainan Airlines
        €380
        37% off
        €606 €380
      • SEA 1:00 PM
        17h 25m
        1 stop
        SEL 2:00 PM
        Seattle - Seoul | Sat, Sep 26 | Normal Airline
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Displayed flight fares from Seattle Tacoma Intl. Airport to Incheon Intl. Airport are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

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

What is the cheapest month for one-way flights from Seattle Tacoma Intl. Airport to Incheon Intl. Airport?

Data is based on average one-way flight prices from Seattle Tacoma Intl. Airport to Incheon Intl. Airport in Trip.com's database over the past 12 months.

Based on Trip.com’s data from the past 12 months, if you’re looking for a low-cost one-way ticket from Seattle Tacoma Intl. Airport to Incheon Intl. Airport, the best time to buy is in September, with an average price of €406. You’ll want to avoid December, when the average price can reach as high as €680.

€680
€543
€406
€269
  • €406
    Sep
  • €545
    Oct
  • €437
    Nov
  • €680
    Dec
  • €445
    Jan
  • €441
    Feb
  • €517
    Mar
  • €504
    Apr
  • €577
    May
  • €668
    Jun
  • €500
    Jul
  • €526
    Aug

What’s the cheapest month to fly round-trip from Seattle Tacoma Intl. Airport to Incheon Intl. Airport?

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

Based on Trip.com’s data from the past 12 months, February is typically the cheapest month to find flights from Seattle Tacoma Intl. Airport to Incheon Intl. Airport, with an average price of €808. In contrast, December is usually the most expensive month, with average fares reaching €1,345.

€1,345
€1,077
€808
€540
    Cheapest
  • €846
    Sep
  • €1,116
    Oct
  • €889
    Nov
  • €1,345
    Dec
  • €835
    Jan
  • €808
    Feb
  • €963
    Mar
  • €827
    Apr
  • €1,087
    May
  • €1,327
    Jun
  • €990
    Jul
  • €1,072
    Aug

What is the cheapest day of the week to fly from Seattle Tacoma Intl. Airport to Incheon Intl. Airport?

The data is based on the past 12 months and shows the average ticket prices from Seattle Tacoma Intl. Airport to Incheon Intl. 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 day to depart from Seattle Tacoma Intl. Airport to Incheon Intl. Airport is Tuesday, with average fares typically lower than other days. You’ll want to avoid flying on Saturday, as ticket prices are usually the highest that day.

€592
€553
€514
€475
  • €555
    Mon
  • €514
    Tue
  • €549
    Wed
  • €562
    Thu
  • €546
    Fri
  • €592
    Sat
  • €533
    Sun

Which airline offers the cheapest flights from Seattle Tacoma Intl. Airport to Incheon Intl. Airport?

The cheapest airline flying from Seattle Tacoma Intl. Airport to Incheon Intl. Airport is Delta Air Lines (from €335) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Delta Air Lines
From €335
Alaska Airlines
From €359
Air Canada
From €372
Hainan Airlines
From €376
Cathay Pacific
From €378
WestJet
From €378
China Airlines
From €413
Korean Air
From €416
United Airlines
From €423
American Airlines
From €425

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What is the flight schedule from Seattle Tacoma Intl. Airport to Incheon Intl. 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. DL3893

    Seattle Tacoma Intl. Airport

    9:20 PM

    SEA

    1h 4m

    Nonstop

    10:24 PM

    YVR

    S M T W T F S
    Search

  2. TW532

    Vancouver Intl. Airport

    1:15 AM

    YVR

    12h 15m

    Nonstop

    5:30 AM

    ICN

    - - T W T F S

  3. DL1412

    Seattle Tacoma Intl. Airport

    10:55 AM

    SEA

    2h 18m

    Nonstop

    1:13 PM

    SFO

    S M T W T F S
    Search

  4. YP114

    San Francisco Intl. Airport

    3:30 PM

    SFO

    12h 40m

    Nonstop

    8:10 PM

    ICN

    - - - - - F -

  5. DL1412

    Seattle Tacoma Intl. Airport

    10:55 AM

    SEA

    2h 18m

    Nonstop

    1:13 PM

    SFO

    S M T W T F S
    Search

  6. YP112

    San Francisco Intl. Airport

    3:20 PM

    SFO

    13h

    Nonstop

    9:20 PM

    ICN

    S - T - T - -

  7. AS528

    Seattle Tacoma Intl. Airport

    9:59 AM

    SEA

    2h 27m

    Nonstop

    12:26 PM

    SFO

    S M T W T F S
    Search

  8. YP112

    San Francisco Intl. Airport

    3:20 PM

    SFO

    13h

    Nonstop

    9:20 PM

    ICN

    S - T - T - -

  9. AS2007

    Seattle Tacoma Intl. Airport

    3:30 PM

    SEA

    59m

    Nonstop

    4:29 PM

    YVR

    S M T W T F S
    Search

  10. TW532

    Vancouver Intl. Airport

    1:15 AM

    YVR

    12h 15m

    Nonstop

    5:30 AM

    ICN

    - - T W T F S

  11. AC8807

    Seattle Tacoma Intl. Airport

    2:55 PM

    SEA

    1h 7m

    Nonstop

    4:02 PM

    YVR

    S M T W T F S
    Search

  12. TW532

    Vancouver Intl. Airport

    1:15 AM

    YVR

    12h 15m

    Nonstop

    5:30 AM

    ICN

    - - T W T F S

  13. DL1053

    Seattle Tacoma Intl. Airport

    7:15 AM

    SEA

    2h 19m

    Nonstop

    9:34 AM

    SFO

    S M T W T F S
    Search

  14. YP112

    San Francisco Intl. Airport

    3:20 PM

    SFO

    13h

    Nonstop

    9:20 PM

    ICN

    S - T - T - -

  15. AC8803

    Seattle Tacoma Intl. Airport

    10:00 AM

    SEA

    1h 10m

    Nonstop

    11:10 AM

    YVR

    S M T W T F S
    Search

  16. TW532

    Vancouver Intl. Airport

    1:15 AM

    YVR

    12h 15m

    Nonstop

    5:30 AM

    ICN

    - - T W T F S

  17. DL2635

    Seattle Tacoma Intl. Airport

    9:25 PM

    SEA

    2h 16m

    Nonstop

    11:41 PM

    SFO

    S M T W T F S
    Search

  18. YP114

    San Francisco Intl. Airport

    3:30 PM

    SFO

    12h 40m

    Nonstop

    8:10 PM

    ICN

    - - - - - F -

  19. AS411

    Seattle Tacoma Intl. Airport

    9:25 PM

    SEA

    2h 15m

    Nonstop

    11:40 PM

    SFO

    S - - - T - S
    Search

  20. YP114

    San Francisco Intl. Airport

    3:30 PM

    SFO

    12h 40m

    Nonstop

    8:10 PM

    ICN

    - - - - - F -
Find more flights and airlines

About Seattle Tacoma Intl. Airport and Incheon Intl. Airport

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

Flight distance 8,385.19 km
Cheapest one-way ticket price €335
Cheapest return ticket price €652

FAQs for Seattle Tacoma Intl. Airport to Incheon Intl. Airport Flights

  • How long is the flight from Seattle Tacoma Intl. Airport to Incheon Intl. Airport?

    Seattle Tacoma Intl. Airport to Incheon Intl. 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 Intl. Airport (SEA) to Incheon Intl. Airport (ICN).
  • The earliest flight from Seattle Tacoma Intl. Airport to Incheon Intl. 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 Intl. Airport (SEA) to Incheon Intl. Airport (ICN) is quite popular. Without considering departure times or holidays, tickets cost around €711 in December, the most expensive month to book this route.
    • The distance from Incheon International Airport to downtown is about 48 km. It takes about 1 hour by taxi.
    • The distance from Gimpo International Airport to downtown is about 15 km. It takes about 30 minutes by taxi.
  • Delta Air Lines is a very popular airline operating an average of 1717 flights per month.
  • One-way flights from Seattle Tacoma Intl. Airport to Incheon Intl. Airport currently start from €335, and round-trip fares start from €652. The current lowest fare is a Delta Air Lines flight departing on Sat, Nov 7; prices may vary depending on availability.
  • Yes. Delta Air Lines, Korean Air, Alaska Airlines and Asiana Airlines operate direct flights from Seattle Tacoma Intl. Airport to Incheon Intl. 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 Intl. Airport to Incheon Intl. Airport is €638. Prices may vary depending on the departure date, airline, and availability.
  • Seattle Tacoma Intl. Airport to Incheon Intl. Airport operates around 25 weekly flights, mainly by Delta Air Lines, Korean Air and Alaska Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Seattle Tacoma Intl. Airport and Incheon Intl. 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.

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

Book with no extra fees

Prices displayed in 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, WLAN, 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 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.