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Cheap flights from Seattle to South Korea from $343

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 South Korea departing on 3/19. 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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Find the cheapest flights from Seattle to South Korea

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:50 am - 4:05 pm
SEA
-
ICN
18h 15m
1 stop
Multiple Airlines Logo
8:40 pm - 9:15 am
ICN
-
SEA
28h 35m
2 stops
$807Multiple Airlines
Tue, Apr 28 - Sat, May 16
Multiple Airlines Logo
12:55 am - 5:15 am
SEA
-
ICN
12h 20mnonstop
Multiple Airlines Logo
5:45 pm - 9:15 am
ICN
-
SEA
31h 30m
1 stop
$808Multiple Airlines
Mon, Apr 6 - Fri, May 1
Multiple Airlines Logo
6:24 pm - 3:45 pm
SEA
-
ICN
29h 21m
1 stop
Multiple Airlines Logo
9:10 pm - 7:04 am
ICN
-
SEA
25h 54m
1 stop
$810Multiple Airlines
Sun, Mar 29 - Tue, Apr 28
China Airlines Logo
12:10 am - 11:20 am
SEA
-
ICN
18h 10m
1 stop
China Airlines Logo
12:30 pm - 7:10 pm
ICN
-
SEA
22h 40m
1 stop
$812China Airlines
Tue, Mar 3 - Thu, Mar 12
Air Canada Logo
10:10 am - 4:05 pm
SEA
-
ICN
13h 55m
1 stop
Air Canada Logo
5:45 pm - 3:03 pm
ICN
-
SEA
13h 18m
1 stop
$813Air Canada
Thu, Apr 9 - Sun, Apr 26
Air Canada Logo
5:40 am - 4:05 pm
SEA
-
ICN
18h 25m
1 stop
Air Canada Logo
5:45 pm - 10:22 pm
ICN
-
SEA
20h 37m
1 stop
$814Air Canada
Sun, Jun 14 - Sun, Jun 28
EVA Air Logo
1:30 am - 6:00 pm
SEA
-
PUS
24h 30m
1 stop
EVA Air Logo
7:10 pm - 7:30 pm
PUS
-
SEA
16h 20m
1 stop
$858EVA Air
Wed, Apr 29 - Tue, May 12
China Airlines Logo
1:15 am - 9:30 am
SEA
-
PUS
16h 15m
1 stop
China Airlines Logo
8:00 pm - 7:15 pm
PUS
-
SEA
15h 15m
1 stop
$860China Airlines
Mon, May 4 - Sun, May 10
EVA Air Logo
12:30 am - 6:00 pm
SEA
-
PUS
25h 30m
1 stop
EVA Air Logo
7:10 pm - 7:30 pm
PUS
-
SEA
16h 20m
1 stop
$896EVA Air
Tue, Apr 21 - Sun, May 10
Delta Logo
12:50 pm - 7:35 pm
SEA
-
PUS
14h 45m
1 stop
Delta Logo
10:40 am - 10:40 am
PUS
-
SEA
16h 00m
1 stop
$991Delta
Sat, Apr 18 - Sun, May 3

China Airlines flights from Seattle to South Korea

Our best China Airlines deals on Seattle to South Korea flight tickets
China Airlines
Mar 3
SEA12:10 amSeattle/Tacoma Intl
18h 10m
1 stop
ICN11:20 amIncheon Intl
Mar 12
ICN12:30 pmIncheon Intl
22h 40m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
$812
China Airlines
May 10
SEA1:15 amSeattle/Tacoma Intl
18h 15m
1 stop
ICN11:30 amIncheon Intl
May 21
ICN8:05 pmIncheon Intl
15h 10m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$848
China Airlines
May 4
SEA1:15 amSeattle/Tacoma Intl
16h 15m
1 stop
PUS9:30 amBusan Gimhae
May 10
PUS8:00 pmBusan Gimhae
15h 15m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$860

Asiana Airlines flights from Seattle to South Korea

Our best Asiana Airlines deals on Seattle to South Korea flight tickets
Asiana Airlines
Feb 1
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
Feb 9
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
$817
Asiana Airlines
Jan 31
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
Feb 8
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
$819
Asiana Airlines
Jan 31
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
Feb 8
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
$821

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to South Korea 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 January 25, 2026.
Use the filters below to find and compare flights from Seattle to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 4/28

5:50 am-4:05 pm

1 stop18h 15m

Incheon Intl

Sat 5/16

8:40 pm-9:15 am

2 stops28h 35m

$807

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/6

12:55 am-5:15 am

Nonstop12h 20m

Incheon Intl

Fri 5/1

5:45 pm-9:15 am

1 stop31h 30m

$808

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/29

6:24 pm-3:45 pm

1 stop29h 21m

Incheon Intl

Tue 4/28

9:10 pm-7:04 am

1 stop25h 54m

$810

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 3/3

12:10 am-11:20 am

1 stop18h 10m

Incheon Intl

Thu 3/12

12:30 pm-7:10 pm

1 stop22h 40m

$812

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 4/9

10:10 am-4:05 pm

1 stop13h 55m

Incheon Intl

Sun 4/26

5:45 pm-3:03 pm

1 stop13h 18m

$813

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 6/14

5:40 am-4:05 pm

1 stop18h 25m

Incheon Intl

Sun 6/28

5:45 pm-10:22 pm

1 stop20h 37m

$814

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Wed 4/29

1:30 am-6:00 pm

1 stop24h 30m

Busan Gimhae

Tue 5/12

7:10 pm-7:30 pm

1 stop16h 20m

$858

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Mon 5/4

1:15 am-9:30 am

1 stop16h 15m

Busan Gimhae

Sun 5/10

8:00 pm-7:15 pm

1 stop15h 15m

$860

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Tue 4/21

12:30 am-6:00 pm

1 stop25h 30m

Busan Gimhae

Sun 5/10

7:10 pm-7:30 pm

1 stop16h 20m

$896

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Sat 4/18

12:50 pm-7:35 pm

1 stop14h 45m

Busan Gimhae

Sun 5/3

10:40 am-10:40 am

1 stop16h 00m

$991

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 South Korea from

How to get the cheapest flight ticket from Seattle to South Korea

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 South Korea?

If you aren’t able to travel to South Korea during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $870.

What is the cheapest day to depart on your flight to South Korea?

On average, the least expensive day to fly to South Korea from Seattle is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $701. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to South Korea for around $960.

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

Flying to South Korea from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $710 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,401 on average. Flights to South Korea from Seattle in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to South Korea?

You are more likely to see cheaper flights to South Korea from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $919 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from Seattle for as low as $601 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to South Korea 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 South Korea flights?

No. A direct flight is the cheapest option for a flight between Seattle to South Korea.

Cheap Seattle to South Korea flight deals and tips

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

Best Price Found

$363

Fastest flight time

11h 20m

Direct flights

Every day

Airports in South Korea

24 airports
The best one-way flight to South Korea from Seattle in the past 72 hours is $363. The best round-trip flight deal from Seattle to South Korea found on momondo in the last 72 hours is $670.
The fastest flight from Seattle to South Korea takes 11h 20m
Direct flights go from Seattle to South Korea every day.
There are 24 airports in South Korea. From Seattle there are direct flights to Incheon Intl (ICN).
Search flight deals

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

    Prices for flights from Seattle/Tacoma Intl Airport to South Korea are refreshed on a daily basis.

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

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

    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 South Korea.

  • What documentation or ID do you need to fly to South Korea?

    The travel and health documents you'll need for your trip to South Korea 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 South Korea. 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 South Korea?

Best airlines flying from Seattle to South Korea

Compare and see reviews for airlines that fly from Seattle to South Korea with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $212Free CancellationRating
7.9
8,111 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $282Free CancellationRating
7.8
2,829 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $335Free CancellationRating
8.0
11,792 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom $576Free CancellationRating
7.1
10,656 reviews
Search Air Canada flights
Asiana AirlinesPriceFrom $717Free CancellationRating
8.1
501 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $835Free CancellationRating
8.3
802 reviews
Search China Airlines flights
Korean AirPriceFrom $843Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
EVA AirPriceFrom $978Free CancellationRating
8.4
1,333 reviews
Search EVA Air flights
Turkish AirlinesPriceFrom $995Free CancellationRating
7.3
4,208 reviews
Search Turkish Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to South Korea for you.

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

All flight searches from Seattle to South Korea on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to South Korea?

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 South Korea.

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

If you are not ready to book a flight from Seattle to South Korea now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to South Korea and let you know when they change.

An easier way to manage your South Korea trip

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