Cheap Flights from Seattle, WA to Seoul from $427

Return flight: Seoul – Seattle

On Cheapflightsplus.com you will find 6 direct and 995 connecting flights from Seattle to Seoul. You can compare airfare deals from 22 airlines and multiple travel sites from $427, book and save on cheap plane tickets and last minute offers. Also check out SEA-SEL flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Seoul depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Seoul is 8336 miles. Time difference between the cities is 5h. Airplanes depart 01:10 to 23:59 from 3 Seattle airports and arrive 01:10 to 23:59 to 3 Seoul airports. Average flight time is 11h 25m.

  • The fastest flight 11h 20m
  • Average flight time 11h 25m
  • The earliest flight 01:10
  • The latest flight 23:59
  • Distance 5180 ml

The cheapest months to travel to Seoul are august (from 427 $), september (from 436 $), july (from 442 $).

The most expensive months are december (from 1 232 $), october (from 662 $), february (from 629 $).

What is the lowest airfare Seattle to Seoul?

The cheapest plane ticket found by our users is $427. This airfare is for economy class on one-way AC8801 flight by Air Canada for August 7, 2025 which leaves Seattle-Tacoma Intl in Seattle at 05:30 am and arrives at Seoul Incheon International at 01:40.

Economy class
$427
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Business class
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First class
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Flight Schedule Seattle (Washington) to Seoul

05:30 — 01:40+2days
28h 10m flight time
Find flight
from$427
05:30 — 06:38 Seattle — Vancouver
AC8801 Air Canada
4h 42m stop
11:20 — 16:05 Vancouver — Hong Kong
AC7 Air Canada
5h stop
21:05 — 01:40 Hong Kong — Seoul
UO614 Hong Kong Express Airways
08:05 — 20:30+1day
20h 25m flight time
Find flight
from$442
08:05 — 10:21 Seattle — San Francisco
HA6557 Hawaiian Airlines
5h 9m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
12:55 — 16:30+1day
11h 35m flight time
Find flight
from$652
Seattle — Seoul
KE5020 Korean Air
13:20 — 16:40+1day
11h 20m flight time
Find flight
from$612
Seattle — Seoul
KE42 Korean Air
13:35 — 20:30+2days
38h 55m flight time
Find flight
from$444
13:35 — 15:48 Seattle — San Francisco
AS1132 Alaska Airlines
23h 42m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
14:30 — 17:55+1day
11h 25m flight time
Find flight
from$595
Seattle — Seoul
OZ271 Asiana Airlines
14:30 — 17:55+1day
11h 25m flight time
Find flight
from$6372
Seattle — Seoul
UA7292 United Airlines
15:10 — 18:35+1day
11h 25m flight time
Find flight
from$537
Seattle — Seoul
HA871 Hawaiian Airlines
15:10 — 18:35+1day
11h 25m flight time
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from$542
Seattle — Seoul
AS8471 Alaska Airlines
15:55 — 20:30+2days
36h 35m flight time
Find flight
from$436
15:44 — 17:57 Seattle — San Francisco
HA6904 Hawaiian Airlines
21h 21m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
20:26 — 20:30+2days
32h 4m flight time
Find flight
from$442
20:26 — 22:40 Seattle — San Francisco
HA6898 Hawaiian Airlines
16h 50m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
20:26 — 20:30+2days
32h 4m flight time
Find flight
from$446
20:26 — 22:40 Seattle — San Francisco
AS1050 Alaska Airlines
16h 50m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
21:40 — 20:30+2days
30h 50m flight time
Find flight
from$436
21:40 — 23:58 Seattle — San Francisco
HA6897 Hawaiian Airlines
15h 31m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
21:40 — 20:30+2days
30h 50m flight time
Find flight
from$445
21:40 — 23:58 Seattle — San Francisco
AS980 Alaska Airlines
15h 32m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
21:44 — 20:30+2days
30h 46m flight time
Find flight
from$441
20:04 — 22:11 Seattle — San Francisco
HA6800 Hawaiian Airlines
15h 31m stop
15:30 — 20:30 San Francisco — Seoul
YP112 YP
Full flight schedule will help you in detecting at what time planes fly from Seattle to Seoul. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on October 14, 2025.

Popular Airlines on the Route

The flight Seattle — Seoul is served by 22 regular airlines and 5 low-cost airlines. Most of the flights on this route are operated by Qatar Airways - 2 departures per week at the price of from $ 835 . And the most expensive tickets are offered by United Airlines airline - from $ 6372.

Direct flights

There are 6 nonstop flights on the route. The fastest direct flight is KE42 by Korean Air takes 11h 20m and the cheapest is AC8801 by Air Canada for $537.

  • AS - Alaska Airlines
    from $542
    Find
  • HA - Hawaiian Airlines
    from $537
    Find
  • KE - Korean Air
    from $612
    Find
  • OZ - Asiana Airlines
    from $595
    Find
  • UA - United Airlines
    from $6372
    Find
See more direct flights

Connecting Flights

There are 995 flights with layovers on the route. The fastest connecting flight is AC8803 by Air Canada takes 14h 5m and the cheapest is AC8801 by Air Canada for $427.

  • QR - Qatar Airways
    from $835
    Find
  • AC - Air Canada
    from $427
    Find
  • PR - Philippine Airlines
    from $602
    Find
  • JL - Japan Airlines - JAL
    from $611
    Find
  • CI - China Airlines
    from $549
    Find
  • SY - Sun Country Airlines
    from $621
    Find
  • OZ - Asiana Airlines
    from $793
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  • UA - United Airlines
    from $707
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  • HU - Hainan Airlines
    from $526
    Find
  • JX - Jambojet
    from $543
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  • BR - EVA Airways Corporation
    from $563
    Find
  • AS - Alaska Airlines
    from $444
    Find
See more connecting flights

Airports

You can fly from Seattle to Seoul from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

  • Boeing Field International Airport-BFI
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  • Seattle-Tacoma Intl-SEA
    from $427
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  • Kenmore Air Harbor SPB-LKE
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Seoul airports

  • Incheon International-ICN
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  • Gimpo International-GMP
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  • Seoul AB-SSN
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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