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Cheap flights from Seattle to Seoul from $434

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 3/3. 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

Enter your travel dates to find the best prices.
Japan Airlines Logo
12:30 pm - 10:05 pm
SEA
-
GMP
16h 35m1 stop
Japan Airlines Logo
12:05 pm - 9:55 am
GMP
-
SEA
14h 50m1 stop
$894Japan Airlines
Tue, Jan 13 - Wed, Feb 4
Japan Airlines Logo
8:25 am - 10:05 pm
SEA
-
GMP
20h 40m2 stops
Japan Airlines Logo
8:00 am - 9:55 am
GMP
-
SEA
18h 55m1 stop
$895Japan Airlines
Tue, Feb 3 - Tue, Feb 17
Japan Airlines Logo
12:30 pm - 10:05 pm
SEA
-
GMP
16h 35m1 stop
Japan Airlines Logo
7:40 pm - 9:55 am
GMP
-
SEA
31h 15m1 stop
$896Japan Airlines
Wed, Jan 14 - Wed, Jan 21
Japan Airlines Logo
8:25 am - 10:05 pm
SEA
-
GMP
20h 40m2 stops
Japan Airlines Logo
7:40 pm - 9:55 am
GMP
-
SEA
31h 15m1 stop
$898Japan Airlines
Wed, Jan 14 - Wed, Jan 21
Japan Airlines Logo
12:30 pm - 10:05 pm
SEA
-
GMP
16h 35m1 stop
Japan Airlines Logo
8:00 am - 4:42 pm
GMP
-
SEA
25h 42m2 stops
$899Japan Airlines
Tue, Jan 13 - Wed, Feb 4
EVA Air Logo
1:30 am - 12:50 pm
SEA
-
GMP
19h 20m1 stop
EVA Air Logo
1:50 pm - 7:30 pm
GMP
-
SEA
21h 40m1 stop
$901EVA Air
Wed, Apr 8 - Sat, Apr 18
Japan Airlines Logo
12:30 pm - 10:05 pm
SEA
-
GMP
16h 35m1 stop
Japan Airlines Logo
12:05 pm - 4:42 pm
GMP
-
SEA
21h 37m2 stops
$902Japan Airlines
Wed, Jan 14 - Wed, Jan 21
Japan Airlines Logo
8:25 am - 10:05 pm
SEA
-
GMP
20h 40m2 stops
Japan Airlines Logo
12:05 pm - 4:42 pm
GMP
-
SEA
21h 37m2 stops
$903Japan Airlines
Wed, Jan 14 - Wed, Jan 21
Japan Airlines Logo
8:25 am - 10:05 pm
SEA
-
GMP
20h 40m2 stops
Japan Airlines Logo
8:00 am - 4:42 pm
GMP
-
SEA
25h 42m2 stops
$904Japan Airlines
Tue, Jan 27 - Wed, Feb 4
Japan Airlines Logo
1:30 pm - 9:50 pm
SEA
-
GMP
16h 20m1 stop
Japan Airlines Logo
12:05 pm - 10:25 am
GMP
-
SEA
14h 20m1 stop
$905Japan Airlines
Wed, Apr 22 - Thu, May 14

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
Jan 13
SEA12:30 pmSeattle/Tacoma Intl
16h 35m
1 stop
GMP10:05 pmSeoul Gimpo Intl
Feb 4
GMP12:05 pmSeoul Gimpo Intl
14h 50m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$894
Find similar
Japan Airlines
Feb 3
SEA8:25 amSeattle/Tacoma Intl
20h 40m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Feb 17
GMP8:00 amSeoul Gimpo Intl
18h 55m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$895
Find similar
Japan Airlines
Jan 14
SEA12:30 pmSeattle/Tacoma Intl
16h 35m
1 stop
GMP10:05 pmSeoul Gimpo Intl
Jan 28
GMP8:00 amSeoul Gimpo Intl
18h 55m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$896
Find similar

ANA flights from Seattle to Seoul Gimpo Intl Airport

Our best ANA deals on Seattle to Seoul Gimpo Intl Airport flight tickets
ANA
Dec 27
SEA3:40 pmSeattle/Tacoma Intl
33h 55m
1 stop
GMP6:35 pmSeoul Gimpo Intl
Jan 25
GMP7:50 pmSeoul Gimpo Intl
34h 30m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$1,386
Find similar
ANA
Dec 27
SEA3:40 pmSeattle/Tacoma Intl
33h 55m
1 stop
GMP6:35 pmSeoul Gimpo Intl
Jan 25
GMP12:25 pmSeoul Gimpo Intl
23h 51m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$1,412
Find similar
ANA
Dec 26
SEA3:40 pmSeattle/Tacoma Intl
33h 55m
1 stop
GMP6:35 pmSeoul Gimpo Intl
Jan 25
GMP7:50 pmSeoul Gimpo Intl
34h 30m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$1,804
Find similar

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 December 17, 2025.
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

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 1/13

12:30 pm-10:05 pm

1 stop16h 35m

Seoul Gimpo Intl

Wed 2/4

12:05 pm-9:55 am

1 stop14h 50m

$894

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 2/3

8:25 am-10:05 pm

2 stops20h 40m

Seoul Gimpo Intl

Tue 2/17

8:00 am-9:55 am

1 stop18h 55m

$895

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 1/14

12:30 pm-10:05 pm

1 stop16h 35m

Seoul Gimpo Intl

Wed 1/21

7:40 pm-9:55 am

1 stop31h 15m

$896

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 1/14

8:25 am-10:05 pm

2 stops20h 40m

Seoul Gimpo Intl

Wed 1/21

7:40 pm-9:55 am

1 stop31h 15m

$898

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 1/13

12:30 pm-10:05 pm

1 stop16h 35m

Seoul Gimpo Intl

Wed 2/4

8:00 am-4:42 pm

2 stops25h 42m

$899

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 4/8

1:30 am-12:50 pm

1 stop19h 20m

Seoul Gimpo Intl

Sat 4/18

1:50 pm-7:30 pm

1 stop21h 40m

$901

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 1/14

12:30 pm-10:05 pm

1 stop16h 35m

Seoul Gimpo Intl

Wed 1/21

12:05 pm-4:42 pm

2 stops21h 37m

$902

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 1/14

8:25 am-10:05 pm

2 stops20h 40m

Seoul Gimpo Intl

Wed 1/21

12:05 pm-4:42 pm

2 stops21h 37m

$903

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 1/27

8:25 am-10:05 pm

2 stops20h 40m

Seoul Gimpo Intl

Wed 2/4

8:00 am-4:42 pm

2 stops25h 42m

$904

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 4/22

1:30 pm-9:50 pm

1 stop16h 20m

Seoul Gimpo Intl

Thu 5/14

12:05 pm-10:25 am

1 stop14h 20m

$905

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 Gimpo Intl Airport

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 day to depart on your flight to Seoul Gimpo Intl Airport?

On average, the least expensive day to fly to Seoul Gimpo Intl Airport from Seattle is on a Thursday. momondo users have found tickets for Thursday departures for as low as $1,283. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Seoul Gimpo Intl Airport is Tuesday, with ticket prices averaging around $1,857.

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

According to our data, the cheapest time of day to fly to Seoul Gimpo Intl Airport is in the afternoon. momondo users have found flights departing from Seattle to Seoul Gimpo Intl Airport in the afternoon for as low as $1,250. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seoul Gimpo Intl Airport is in the morning when prices are around $1,586.

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

16h 20m

Direct flights

None
The fastest flight from Seattle to Seoul Gimpo Intl Airport takes 16h 20m
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

  • 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 16h 20m 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.

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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