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Cheap flights from Seattle to Seoul from $491

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 8/25. 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 Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:30 am - 10:25 pm
SEA
-
GMP
19h 55m
2 stops
Multiple Airlines Logo
5:40 pm - 2:22 pm
GMP
-
SEA
36h 42m
2 stops
$989Multiple Airlines
Wed, Sep 16 - Sun, Sep 27
Multiple Airlines Logo
10:30 am - 10:25 pm
SEA
-
GMP
19h 55m
2 stops
Multiple Airlines Logo
5:40 pm - 2:22 pm
GMP
-
SEA
36h 42m
2 stops
$1,089Multiple Airlines
Wed, Sep 16 - Sun, Sep 27
Multiple Airlines Logo
2:10 am - 7:15 pm
SEA
-
GMP
25h 05m
1 stop
Multiple Airlines Logo
8:15 pm - 1:38 pm
GMP
-
SEA
34h 23m
2 stops
$1,176Multiple Airlines
Mon, Aug 31 - Wed, Feb 17
EVA Air Logo
12:30 am - 12:50 pm
SEA
-
GMP
20h 20m
1 stop
EVA Air Logo
1:50 pm - 6:10 pm
GMP
-
SEA
21h 20m
1 stop
$1,215EVA Air
Thu, Oct 15 - Fri, Nov 6
EVA Air Logo
1:30 am - 12:50 pm
SEA
-
GMP
19h 20m
1 stop
EVA Air Logo
1:50 pm - 7:20 pm
GMP
-
SEA
21h 30m
1 stop
$1,223EVA Air
Thu, Sep 17 - Sat, Oct 10
EVA Air Logo
2:10 am - 6:10 pm
SEA
-
GMP
24h 00m
1 stop
EVA Air Logo
1:50 pm - 7:00 pm
GMP
-
SEA
21h 10m
1 stop
$1,232EVA Air
Sun, Aug 23 - Sat, Sep 5
Multiple Airlines Logo
12:30 am - 12:50 pm
SEA
-
GMP
20h 20m
1 stop
Multiple Airlines Logo
1:50 pm - 12:04 am
GMP
-
SEA
27h 14m
2 stops
$1,256Multiple Airlines
Thu, Oct 15 - Fri, Nov 6
Japan Airlines Logo
1:15 pm - 10:40 am
SEA
-
GMP
29h 25m
1 stop
Japan Airlines Logo
12:05 pm - 9:55 am
GMP
-
SEA
14h 50m
1 stop
$1,262Japan Airlines
Tue, Sep 1 - Wed, Feb 17
Japan Airlines Logo
1:15 pm - 10:40 am
SEA
-
GMP
29h 25m
1 stop
Japan Airlines Logo
12:05 pm - 9:50 am
GMP
-
SEA
14h 45m
1 stop
$1,264Japan Airlines
Tue, Sep 1 - Tue, Nov 17
Multiple Airlines Logo
10:30 am - 10:25 pm
SEA
-
GMP
19h 55m
2 stops
Multiple Airlines Logo
5:40 pm - 2:22 pm
GMP
-
SEA
36h 42m
2 stops
$1,265Multiple Airlines
Wed, Sep 16 - Sun, Sep 27

Japan Airlines flights from Seattle to Seoul Gimpo Intl Airport

Our best Japan Airlines deals on Seattle to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Sep 7
SEA1:15 pmSeattle/Tacoma Intl
29h 25m
1 stop
GMP10:40 amSeoul Gimpo Intl
Sep 25
GMP8:00 amSeoul Gimpo Intl
18h 35m
1 stop
SEA10:35 amSeattle/Tacoma Intl
$1,291
Japan Airlines
Sep 2
SEA1:15 pmSeattle/Tacoma Intl
29h 25m
1 stop
GMP10:40 amSeoul Gimpo Intl
Sep 25
GMP8:00 amSeoul Gimpo Intl
18h 35m
1 stop
SEA10:35 amSeattle/Tacoma Intl
$1,297
Japan Airlines
Sep 6
SEA1:15 pmSeattle/Tacoma Intl
29h 25m
1 stop
GMP10:40 amSeoul Gimpo Intl
Sep 25
GMP8:00 amSeoul Gimpo Intl
18h 35m
1 stop
SEA10:35 amSeattle/Tacoma Intl
$1,304

ANA flights from Seattle to Seoul Gimpo Intl Airport

Our best ANA deals on Seattle to Seoul Gimpo Intl Airport flight tickets
ANA
May 4
SEA5:25 pmSeattle/Tacoma Intl
33h 10m
2 stops
GMP6:35 pmSeoul Gimpo Intl
May 13
GMP7:40 amSeoul Gimpo Intl
22h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,602
ANA
May 4
SEA5:25 pmSeattle/Tacoma Intl
25h 40m
2 stops
GMP11:05 amSeoul Gimpo Intl
May 13
GMP7:40 amSeoul Gimpo Intl
22h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,608
ANA
Apr 27
SEA10:20 amSeattle/Tacoma Intl
32h 45m
2 stops
GMP11:05 amSeoul Gimpo Intl
May 4
GMP7:40 amSeoul Gimpo Intl
22h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,644

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Seoul Gimpo Intl Airport 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 April 23, 2026.
Use the filters below to find and compare flights from Seattle to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 9/16

10:30 am-10:25 pm

2 stops19h 55m

Seoul Gimpo Intl

Sun 9/27

5:40 pm-2:22 pm

2 stops36h 42m

$989

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 9/16

10:30 am-10:25 pm

2 stops19h 55m

Seoul Gimpo Intl

Sun 9/27

5:40 pm-2:22 pm

2 stops36h 42m

$1,089

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 8/31

2:10 am-7:15 pm

1 stop25h 05m

Seoul Gimpo Intl

Wed 2/17

8:15 pm-1:38 pm

2 stops34h 23m

$1,176

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 10/15

12:30 am-12:50 pm

1 stop20h 20m

Seoul Gimpo Intl

Fri 11/6

1:50 pm-6:10 pm

1 stop21h 20m

$1,215
Quickest round-trip

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 9/17

1:30 am-12:50 pm

1 stop19h 20m

Seoul Gimpo Intl

Sat 10/10

1:50 pm-7:20 pm

1 stop21h 30m

$1,223

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 8/23

2:10 am-6:10 pm

1 stop24h 00m

Seoul Gimpo Intl

Sat 9/5

1:50 pm-7:00 pm

1 stop21h 10m

$1,232

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 10/15

12:30 am-12:50 pm

1 stop20h 20m

Seoul Gimpo Intl

Fri 11/6

1:50 pm-12:04 am

2 stops27h 14m

$1,256

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 9/1

1:15 pm-10:40 am

1 stop29h 25m

Seoul Gimpo Intl

Wed 2/17

12:05 pm-9:55 am

1 stop14h 50m

$1,262

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 9/1

1:15 pm-10:40 am

1 stop29h 25m

Seoul Gimpo Intl

Tue 11/17

12:05 pm-9:50 am

1 stop14h 45m

$1,264

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 9/16

10:30 am-10:25 pm

2 stops19h 55m

Seoul Gimpo Intl

Sun 9/27

5:40 pm-2:22 pm

2 stops36h 42m

$1,265

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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When to book flights from Seattle to Seoul Gimpo Intl Airport

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

Cheap Seattle to Seoul Gimpo Intl Airport (SEA to GMP) flight deals and tips

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

Fastest flight time

17h 15m

Direct flights

None
The fastest flight from Seattle to Seoul Gimpo Intl Airport takes 17h 15m
There are no direct flights from Seattle to Seoul Gimpo Intl Airport. There are no popular flight routes from Seattle to Seoul Gimpo Intl Airport.
Search flight deals

Frequently asked questions about flying from Seattle to Seoul Gimpo Intl Airport

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

    The distance between Seattle/Tacoma Intl and Seoul Gimpo Intl is about 5173.4 mi. Typically, this will take 17h 15m by plane in normal conditions.

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

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

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

    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 Gimpo Intl Airport.

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

    The necessary travel and health documents for your Seoul Gimpo Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Seattle to Seoul Gimpo Intl Airport

  • How do I get Price Alerts for flights from Seattle to Seoul Gimpo Intl Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Seoul Gimpo Intl Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Seattle to Seoul Gimpo Intl Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Seoul. momondo saves you time and could save you money on your trip.

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

Flights from Seattle to Seoul with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from Seattle and alert you when they change.

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