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Cheap flights from Seattle to Seoul from $297

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Seoul departing on 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Hainan Airlines Logo
10:05 am - 9:00 pmSEA-ICN
41h 55m2 stops
Hainan Airlines Logo
10:10 pm - 8:05 amICN-SEA
26h 55m2 stops
$683Hainan Airlines
Find Deal
Thu, Nov 13 - Wed, Nov 19
Multiple Airlines Logo
10:05 am - 9:00 pmSEA-ICN
41h 55m2 stops
Multiple Airlines Logo
6:55 pm - 7:16 pmICN-SEA
17h 21m1 stop
$746Multiple Airlines
Find Deal
Thu, Nov 13 - Wed, Nov 19
Air Canada Logo
5:50 am - 5:10 pmSEA-ICN
18h 20m1 stop
Air Canada Logo
6:55 pm - 7:16 pmICN-SEA
17h 21m1 stop
$762Air Canada
Find Deal
Mon, Nov 17 - Thu, Nov 27
Air Canada Logo
10:05 am - 5:10 pmSEA-ICN
14h 05m1 stop
Air Canada Logo
6:55 pm - 2:31 pmICN-SEA
12h 36m1 stop
$772Air Canada
Find Deal
Thu, Nov 13 - Wed, Nov 19
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
$797Asiana Airlines
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Tue, Nov 25 - Sat, Dec 6
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
$800Asiana Airlines
Find Deal
Mon, Dec 1 - Tue, Dec 9
Japan Airlines Logo
8:45 am - 10:05 pmSEA-GMP
20h 20m2 stops
Japan Airlines Logo
8:00 am - 9:03 amGMP-SEA
42h 03m2 stops
$872Japan Airlines
Find Deal
Wed, Dec 3 - Fri, Dec 12
Japan Airlines Logo
8:45 am - 10:05 pmSEA-GMP
20h 20m2 stops
Japan Airlines Logo
8:00 am - 9:50 amGMP-SEA
18h 50m1 stop
$883Japan Airlines
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Wed, Dec 3 - Fri, Dec 12
ANA Logo
3:45 pm - 11:20 amSEA-GMP
26h 35m1 stop
ANA Logo
12:25 pm - 7:16 pmGMP-SEA
23h 51m2 stops
$1,148ANA
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Sun, Jan 18 - Sun, Feb 1
ANA Logo
3:45 pm - 11:20 amSEA-GMP
26h 35m1 stop
ANA Logo
7:45 am - 1:20 pmGMP-SEA
22h 35m1 stop
$1,155ANA
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Tue, Jan 27 - Tue, Feb 3

Air Canada flights from Seattle to Seoul

Our best Air Canada deals on Seattle to Seoul flight tickets
Air Canada
Nov 17
SEA5:50 amSeattle/Tacoma Intl
18h 20m
1 stop
ICN5:10 pmIncheon Intl
Nov 27
ICN6:55 pmIncheon Intl
17h 21m
1 stop
SEA7:16 pmSeattle/Tacoma Intl
$762
Find similar
Air Canada
Nov 13
SEA10:05 amSeattle/Tacoma Intl
14h 05m
1 stop
ICN5:10 pmIncheon Intl
Nov 19
ICN6:55 pmIncheon Intl
12h 36m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$772
Find similar
Air Canada
Nov 21
SEA8:00 pmSeattle/Tacoma Intl
28h 10m
1 stop
ICN5:10 pmIncheon Intl
Dec 2
ICN6:55 pmIncheon Intl
20h 11m
1 stop
SEA10:06 pmSeattle/Tacoma Intl
$799
Find similar

Asiana Airlines flights from Seattle to Seoul

Our best Asiana Airlines deals on Seattle to Seoul flight tickets
Asiana Airlines
Nov 25
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
Dec 6
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
$797
Find similar
Asiana Airlines
Dec 1
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
Dec 9
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
$800
Find similar
Asiana Airlines
Nov 9
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
Nov 20
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
$850
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 3, 2025.
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

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/13

10:05 am-9:00 pm

2 stops41h 55m

Incheon Intl

Wed 11/19

10:10 pm-8:05 am

2 stops26h 55m

$683

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/13

10:05 am-9:00 pm

2 stops41h 55m

Incheon Intl

Wed 11/19

6:55 pm-7:16 pm

1 stop17h 21m

$746

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 11/17

5:50 am-5:10 pm

1 stop18h 20m

Incheon Intl

Thu 11/27

6:55 pm-7:16 pm

1 stop17h 21m

$762

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/13

10:05 am-5:10 pm

1 stop14h 05m

Incheon Intl

Wed 11/19

6:55 pm-2:31 pm

1 stop12h 36m

$772

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 11/25

12:10 am-5:20 am

Nonstop12h 10m

Incheon Intl

Sat 12/6

9:00 pm-1:55 pm

Nonstop9h 55m

$797

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 12/1

12:10 am-5:20 am

Nonstop12h 10m

Incheon Intl

Tue 12/9

9:00 pm-1:55 pm

Nonstop9h 55m

$800

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 12/3

8:45 am-10:05 pm

2 stops20h 20m

Seoul Gimpo Intl

Fri 12/12

8:00 am-9:03 am

2 stops42h 03m

$872

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 12/3

8:45 am-10:05 pm

2 stops20h 20m

Seoul Gimpo Intl

Fri 12/12

8:00 am-9:50 am

1 stop18h 50m

$883

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 1/18

3:45 pm-11:20 am

1 stop26h 35m

Seoul Gimpo Intl

Sun 2/1

12:25 pm-7:16 pm

2 stops23h 51m

$1,148

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 1/27

3:45 pm-11:20 am

1 stop26h 35m

Seoul Gimpo Intl

Tue 2/3

7:45 am-1:20 pm

1 stop22h 35m

$1,155

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Seattle to Seoul

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seoul?

The month of September is another great option to travel to Seoul, with average flight prices from Seattle averaging around $902.

What is the cheapest day to depart on your flight to Seoul?

According to our data, Monday is the cheapest day to fly to Seoul from Seattle. The lowest ticket price found for a Monday departure recently was $838. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Friday, with ticket prices averaging around $1,019.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $715 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,401 per ticket.

What is the cheapest Seattle/Tacoma Intl to Seoul flight route?

Fly from Seattle/Tacoma Intl to Incheon Intl for the best Seattle/Tacoma Intl - Seoul flight prices

How far in advance should I book a flight to Seoul?

You are more likely to see cheaper flights to Seoul from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,137 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Seattle for as low as $929 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Seoul flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Seoul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Seoul flights?

You could potentially save up to 1% on your flight if you consider stops on a Seattle to Seoul flight.

How have Seattle to Seoul flight prices changed over time?

As of November 2025, prices for Seattle to Seoul flights are approximately 51% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Seoul

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Seoul according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Seoul (SEA to SEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Seoul

Best Price Found

$379

Fastest flight time

11h 50m

Direct flights

Every day

Airports in Seoul

1 airport
The best one-way flight to Seoul from Seattle in the past 72 hours is $379. The best round-trip flight deal from Seattle to Seoul found on momondo in the last 72 hours is $681.
The fastest flight from Seattle to Seoul takes 11h 50m
Direct flights go from Seattle to Seoul every day.
There is 1 airport near Seoul: Incheon Intl (ICN)
Search flight deals

  • How far is Seattle/Tacoma Intl to Seoul by plane?

    The distance between Seattle/Tacoma Intl and Seoul is about 5167.4 mi. By plane, this route typically takes 11h 50m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Seoul?

    Prices for flights from Seattle/Tacoma Intl Airport to Seoul are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Seoul?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Seoul?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Seoul.

  • What documentation or ID do you need to fly to Seoul?

    The travel and health documents you'll need for your trip to Seoul may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seoul. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Seoul?

  • What is the most popular airline from Seattle to Seoul?

Best airlines flying from Seattle to Seoul

Compare and see reviews for airlines that fly from Seattle to Seoul with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $167Free CancellationRating
7.9
8,002 reviews
Search Delta flights
Alaska AirlinesPriceFrom $190Free CancellationRating
8.0
11,236 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $282Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $282Free CancellationRating
7.8
2,799 reviews
Search Hawaiian Airlines flights
Air CanadaPriceFrom $709Free CancellationRating
7.1
10,398 reviews
Search Air Canada flights
Asiana AirlinesPriceFrom $802Free CancellationRating
8.2
484 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $850Free CancellationRating
8.4
1,160 reviews
Search Korean Air flights
China AirlinesPriceFrom $886Free CancellationRating
8.3
776 reviews
Search China Airlines flights
EVA AirPriceFrom $978Free CancellationRating
8.4
1,270 reviews
Search EVA Air flights
Turkish AirlinesPriceFrom $1,007Free CancellationRating
7.3
4,040 reviews
Search Turkish Airlines flights

  • Korean Air Flights From Seattle to Seoul

    Korean Air operates around 14 flights from Seattle to Seoul every week. The average price of these flights found in the last 72 hours has been $1,171, but momondo users have found Korean Air deals from Seattle to Seoul from as low as $850 round-trip. Korean Air has been scored 8.4/10 in 1,160 reviews.

  • Asiana Airlines Flights From Seattle to Seoul

    Asiana Airlines (8.2/10 from 484 reviews) operates around 3 flights from Seattle to Seoul in any given week. The average Asiana Airlines airfare for this route is around $1,080, with deals from around $802 rare but found on momondo. Referenced prices are for round-trip Seattle to Seoul flight searches in the last 72 hours.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Seoul?

Finding the right flight to Seoul from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seoul quick and easy, saving you time and money.

Can I find flights from Seattle to Seoul with flexible booking policies on momondo?

Yes. All flights to Seoul from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Seoul?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Seoul.

I’m not ready to book a flight from Seattle to Seoul right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul
Seoul Gimpo Intl Airport
Incheon Intl Airport