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Cheap flights from Seattle to Seoul from C$ 592

SEA — SEL
8 Dec — 15 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Seoul

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Seoul

Mon 16/1110:25 a.m. -
1 stop21h 15m
Tue 24/117:35 p.m. -
1 stop30h 10m
Deal found 6/11C$ 1,218
Tue 17/1112:30 p.m. -
Nonstop12h 15m
Sun 6/126:45 p.m. -
Nonstop10h 11m
Deal found 3/11C$ 1,263
Tue 17/117:20 a.m. -
1 stop17h 20m
Sun 6/129:20 p.m. -
Nonstop9h 50m
Deal found 3/11C$ 1,273
Sat 28/1110:25 a.m. -
1 stop21h 15m
Wed 9/121:55 a.m. -
1 stop23h 50m
Deal found 3/11C$ 1,288
Tue 24/1110:25 a.m. -
1 stop21h 15m
Tue 1/121:50 p.m. -
1 stop35h 55m
Deal found 4/11C$ 1,324
Tue 17/119:39 p.m. -
2 stops34h 01m
Mon 23/1110:00 a.m. -
1 stop39h 45m
Deal found 6/11C$ 1,332
Mon 30/113:46 p.m. -
2 stops29h 04m
Sun 13/121:50 p.m. -
1 stop35h 55m
Deal found 3/11C$ 1,341
Wed 18/1110:25 a.m. -
1 stop21h 15m
Wed 2/121:50 p.m. -
1 stop35h 55m
Deal found 4/11C$ 1,345
Mon 16/1110:25 a.m. -
1 stop21h 15m
Sun 22/1110:00 a.m. -
2 stops51h 56m
Deal found 6/11C$ 1,349
Sun 15/114:59 p.m. -
2 stops38h 41m
Mon 23/1110:00 a.m. -
1 stop39h 45m
Deal found 6/11C$ 1,358
Sat 28/1110:25 a.m. -
1 stop33h 20m
Fri 11/123:00 p.m. -
1 stop34h 45m
Deal found 3/11C$ 1,359
Mon 23/119:37 p.m. -
2 stops34h 03m
Tue 1/123:00 p.m. -
1 stop34h 45m
Deal found 4/11C$ 1,384

Find flight deals from Seattle to Seoul

Round-trip from

C$ 1,218

One-way from

C$ 592

Popular in

December

Cheapest in

January

Average price

C$ 1,564

Good one-way deal

C$ 691 or less
Cathay Pacific
  • Cathay Pacific
  • 22/3-28/3
  • 2 total stops
  • 57h 40m total
  • Seattle to Seoul
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4/12-31/12
  • 4/12-31/12
  • 1 total stop
  • 19h 34m total
  • Seattle to Seoul
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 107 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 47 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Seoul (SEL).
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Mon 16/11

10:25 a.m.-12:40 a.m.

1 stop21h 15m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 619

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Tue 24/11

12:30 p.m.-5:45 p.m.

Nonstop12h 15m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 817

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Fri 13/11

11:26 a.m.-9:25 p.m.

2 stops64h 59m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 833

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Sat 27/3

7:55 p.m.-10:25 p.m.

2 stops34h 30m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 841

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Thu 26/11

12:30 p.m.-5:45 p.m.

Nonstop12h 15m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 852
Quickest round-trip

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Mon 11/1

11:00 a.m.-3:55 p.m.

Nonstop11h 55m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 853

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Sat 17/4

11:45 a.m.-10:25 p.m.

1 stop18h 40m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 860

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Sun 29/11

12:40 p.m.-5:35 p.m.

Nonstop11h 55m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 908

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Sat 21/11

12:20 p.m.-4:15 p.m.

3 stops34h 55m

Incheon Intl

Wed 31/12

12:00 a.m.-7:00 a.m.

Nonstop0h 00m

C$ 922

SeattleIncheon

SEA Seattle/Tacoma Intl - ICN Incheon Intl

SEAICN

Seattle/Tacoma Intl

Tue 16/2

9:40 p.m.-12:40 a.m.

2 stops34h 00m

Incheon Intl

Mon 1/3

1:55 a.m.-8:45 a.m.

1 stop23h 50m

C$ 1,332

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/11

Showing 1-10 of 20 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Seoul

What is the cheapest month to book a flight from Seattle to Seoul?

Currently, April is the cheapest month in which you can book a flight from Seattle to Seoul (average of C$ 485). Flying from Seattle to Seoul in December is currently the most expensive (average of C$ 1,985). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to SEL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Seoul as you normally would.

Weekly flight availability from Seattle to Seoul

The most flights from SEA to SEL are scheduled on a Wednesday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost to fly round-trip from Seattle to Seoul?

Airfare is below average for this route at the moment.
Seattle to Seoul flights typically cost between C$ 1,348 and C$ 1,743 in March.
The cheapest round-trip price found within the last 5 days was C$ 1,218 on Cathay Pacific (22 Mar-30 Mar).

How far ahead should I book a flight from Seattle to Seoul?

To ensure you get the cheapest price possible for a flight from Seattle to Seoul, you should look to book at least 68 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

  • What airport do you fly from for flights from Seattle to Seoul?

    Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Seoul from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Seoul should be relatively easy as there are 6 daily outbound flights to Seoul from 0 different airlines.

  • How long is the flight from Seattle to Seoul?

    Departing from Seattle to Seoul will take you 11h 55m. Seattle and Seoul are separated by a distance of 8369 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from Seattle to Seoul?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Seoul on time: Thai Airways (100%), Asiana Airlines (100%), United Airlines (100%).

  • Can I find deals for flights from Seattle to Seoul that include hotel bookings?

    Yes. In addition to deals on Seattle to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Seoul?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Seoul.

  • Can I find deals for business class flights from Seattle to Seoul?

    Yes. Cheapflights offers flight deals from Seattle to Seoul by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Seoul?

    Currently, April is the cheapest month in which you can book a flight from Seattle to Seoul (average of C$ 485). Flying from Seattle to Seoul in December is currently the most expensive (average of C$ 1,985). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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