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Cheap flights from Seattle to Seoul from $437

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 10/19. 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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Cheap round-trip flights

Japan Airlines Logo
1:30 pm - 9:50 pmSEA-GMP
16h 20m1 stop
Japan Airlines Logo
12:05 pm - 10:25 amGMP-SEA
14h 20m1 stop
$876Japan Airlines
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Mon, Sep 22 - Mon, Oct 20
Japan Airlines Logo
12:10 pm - 10:05 pmSEA-GMP
16h 55m1 stop
Japan Airlines Logo
7:40 pm - 9:50 amGMP-SEA
31h 10m1 stop
$878Japan Airlines
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Sun, Nov 9 - Thu, Nov 13
Japan Airlines Logo
12:10 pm - 10:05 pmSEA-GMP
16h 55m1 stop
Japan Airlines Logo
8:00 am - 9:50 amGMP-SEA
18h 50m1 stop
$879Japan Airlines
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Mon, Nov 10 - Fri, Nov 14
Japan Airlines Logo
1:30 pm - 9:50 pmSEA-GMP
16h 20m1 stop
Japan Airlines Logo
7:55 am - 11:38 amGMP-SEA
43h 43m2 stops
$882Japan Airlines
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Mon, Sep 22 - Mon, Oct 20
Japan Airlines Logo
1:30 pm - 9:50 pmSEA-GMP
16h 20m1 stop
Japan Airlines Logo
12:05 pm - 5:05 pmGMP-SEA
22h 00m2 stops
$901Japan Airlines
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Sun, Oct 19 - Mon, Nov 10
Japan Airlines Logo
12:10 pm - 10:05 pmSEA-GMP
16h 55m1 stop
Japan Airlines Logo
12:05 pm - 9:04 amGMP-SEA
37h 59m2 stops
$904Japan Airlines
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Mon, Nov 3 - Thu, Nov 27
Multiple Airlines Logo
7:59 pm - 10:45 amSEA-GMP
22h 46m2 stops
Multiple Airlines Logo
7:55 am - 4:58 pmGMP-SEA
25h 03m2 stops
$939Multiple Airlines
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Mon, Sep 29 - Tue, Oct 21
EVA Air Logo
12:10 am - 6:00 pmSEA-GMP
24h 50m1 stop
EVA Air Logo
1:50 pm - 6:10 pmGMP-SEA
21h 20m1 stop
$1,022EVA Air
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Sun, Nov 9 - Fri, Nov 14
EVA Air Logo
1:30 am - 6:10 pmSEA-GMP
24h 40m1 stop
EVA Air Logo
1:50 pm - 7:30 pmGMP-SEA
21h 40m1 stop
$1,076EVA Air
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Sun, Sep 28 - Fri, Oct 17
EVA Air Logo
1:30 am - 7:15 pmSEA-GMP
25h 45m1 stop
EVA Air Logo
1:50 pm - 7:10 pmGMP-SEA
21h 20m1 stop
$1,090EVA Air
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Mon, Oct 13 - Fri, Oct 31

ANA flights from Seattle to Seoul Gimpo Intl Airport

Our best ANA deals on Seattle to Seoul Gimpo Intl Airport flight tickets
ANA
Sep 23
SEA4:30 pmSeattle/Tacoma Intl
26h 35m
1 stop
GMP11:05 amSeoul Gimpo Intl
Sep 30
GMP7:40 amSeoul Gimpo Intl
22h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,201
Find similar
ANA
Sep 22
SEA4:30 pmSeattle/Tacoma Intl
34h 05m
1 stop
GMP6:35 pmSeoul Gimpo Intl
Sep 29
GMP12:40 pmSeoul Gimpo Intl
17h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,231
Find similar
ANA
Sep 25
SEA4:30 pmSeattle/Tacoma Intl
26h 35m
1 stop
GMP11:05 amSeoul Gimpo Intl
Sep 29
GMP12:40 pmSeoul Gimpo Intl
17h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,259
Find similar

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 22
SEA1:30 pmSeattle/Tacoma Intl
16h 20m
1 stop
GMP9:50 pmSeoul Gimpo Intl
Oct 20
GMP12:05 pmSeoul Gimpo Intl
14h 20m
1 stop
SEA10:25 amSeattle/Tacoma Intl
$876
Find similar
Japan Airlines
Nov 9
SEA12:10 pmSeattle/Tacoma Intl
16h 55m
1 stop
GMP10:05 pmSeoul Gimpo Intl
Nov 13
GMP7:40 pmSeoul Gimpo Intl
31h 10m
1 stop
SEA9:50 amSeattle/Tacoma Intl
$878
Find similar
Japan Airlines
Nov 10
SEA12:10 pmSeattle/Tacoma Intl
16h 55m
1 stop
GMP10:05 pmSeoul Gimpo Intl
Nov 14
GMP8:00 amSeoul Gimpo Intl
18h 50m
1 stop
SEA9:50 amSeattle/Tacoma Intl
$879
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 September 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

Mon 9/22

1:30 pm-9:50 pm

1 stop16h 20m

Seoul Gimpo Intl

Mon 10/20

12:05 pm-10:25 am

1 stop14h 20m

$876

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 11/9

12:10 pm-10:05 pm

1 stop16h 55m

Seoul Gimpo Intl

Thu 11/13

7:40 pm-9:50 am

1 stop31h 10m

$878

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 11/10

12:10 pm-10:05 pm

1 stop16h 55m

Seoul Gimpo Intl

Fri 11/14

8:00 am-9:50 am

1 stop18h 50m

$879

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 9/22

1:30 pm-9:50 pm

1 stop16h 20m

Seoul Gimpo Intl

Mon 10/20

7:55 am-11:38 am

2 stops43h 43m

$882

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 10/19

1:30 pm-9:50 pm

1 stop16h 20m

Seoul Gimpo Intl

Mon 11/10

12:05 pm-5:05 pm

2 stops22h 00m

$901

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 11/3

12:10 pm-10:05 pm

1 stop16h 55m

Seoul Gimpo Intl

Thu 11/27

12:05 pm-9:04 am

2 stops37h 59m

$904

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 9/29

7:59 pm-10:45 am

2 stops22h 46m

Seoul Gimpo Intl

Tue 10/21

7:55 am-4:58 pm

2 stops25h 03m

$939

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 11/9

12:10 am-6:00 pm

1 stop24h 50m

Seoul Gimpo Intl

Fri 11/14

1:50 pm-6:10 pm

1 stop21h 20m

$1,022

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 9/28

1:30 am-6:10 pm

1 stop24h 40m

Seoul Gimpo Intl

Fri 10/17

1:50 pm-7:30 pm

1 stop21h 40m

$1,076

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 10/13

1:30 am-7:15 pm

1 stop25h 45m

Seoul Gimpo Intl

Fri 10/31

1:50 pm-7:10 pm

1 stop21h 20m

$1,090

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

Direct flights

None
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.
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  • 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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