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Gimpo Intl

$450+ Cheap flights from Washington to Gimpo Intl (GMP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GMP
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Washington to Gimpo Intl

Cheapest flights from Washington to Gimpo Intl
Explore the most affordable flight options available from Washington to Gimpo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:41 am
SEA
-
GMP
2 stops21h 09m
Japan Airlines
Wed 4/2212:05 pm
GMP
-
SEA
1 stop14h 20m
Japan Airlines
Deal found 1/29$902
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:30 pm
SEA
-
GMP
1 stop16h 20m
Japan Airlines
Tue 5/1212:05 pm
GMP
-
SEA
2 stops20h 12m
Japan Airlines
Deal found 1/26$909
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:10 am
SEA
-
GMP
2 stops21h 40m
Japan Airlines
Tue 9/812:05 pm
GMP
-
SEA
2 stops20h 51m
Japan Airlines
Deal found 1/27$911
This Mytrip deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:20 pm
SEA
-
GMP
2 stops49h 50m
Multiple Airlines
Mon 5/253:00 pm
GMP
-
SEA
2 stops23h 20m
Multiple Airlines
Deal found 1/27$916
This KAYAK deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:41 am
SEA
-
GMP
2 stops34h 04m
Japan Airlines
Thu 5/147:55 am
GMP
-
SEA
1 stop18h 30m
Japan Airlines
Deal found 1/26$922
This oojo deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:30 pm
SEA
-
GMP
1 stop16h 20m
Japan Airlines
Thu 8/2712:05 pm
GMP
-
SEA
2 stops20h 51m
Japan Airlines
Deal found 1/28$923
This FlightHub deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:30 pm
SEA
-
GMP
1 stop16h 20m
Japan Airlines
Tue 5/1212:05 pm
GMP
-
SEA
2 stops20h 12m
Japan Airlines
Deal found 1/26$924
This FlightHub deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/191:30 pm
SEA
-
GMP
1 stop16h 20m
Japan Airlines
Thu 4/2312:05 pm
GMP
-
SEA
1 stop14h 20m
Japan Airlines
Deal found 1/28$930
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:35 pm
SEA
-
GMP
2 stops40h 15m
Japan Airlines
Wed 10/217:20 pm
GMP
-
SEA
2 stops37h 36m
Japan Airlines
Deal found 1/27$932
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:05 am
PDX
-
GMP
2 stops22h 00m
Japan Airlines
Wed 3/48:00 am
GMP
-
PDX
2 stops25h 50m
Japan Airlines
Deal found 1/27$940
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:05 am
PDX
-
GMP
2 stops22h 00m
Japan Airlines
Thu 3/128:00 am
GMP
-
PDX
2 stops24h 50m
Japan Airlines
Deal found 1/27$946
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:05 am
PDX
-
GMP
2 stops22h 00m
Japan Airlines
Sat 3/78:00 am
GMP
-
PDX
2 stops25h 50m
Japan Airlines
Deal found 1/27$951

Find flight deals from Washington to Gimpo Intl

Keep the following information in mind while searching for Washington to Gimpo Intl flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$902
(Cheapflightsfares)

One-way from

$450
(FlightHub)

Popular in

June

Cheapest in

November

Average price

$870
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
Search Deals
From Washington to Seoul Gimpo Intl
Search Deals
One-way flight from Washington to Seoul Gimpo Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($198 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Gimpo Intl 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Washington to Seoul Gimpo Intl Airport that are best for you.

Fly from

Washington

Fly to

Gimpo Intl

Route

Depart

Return

Price

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 4/20

1:30 pm-10:45 am

1 stop29h 15m

Seoul Gimpo Intl

Wed 5/13

12:05 pm-10:25 am

1 stop14h 20m

$926

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Sun 3/1

7:05 am-10:05 pm

2 stops22h 00m

Seoul Gimpo Intl

Wed 3/4

8:00 am-4:50 pm

2 stops25h 50m

$940

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 3/3

8:15 am-10:05 pm

2 stops20h 50m

Seoul Gimpo Intl

Tue 3/10

12:05 pm-4:04 pm

2 stops19h 59m

$949

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Sun 3/8

7:05 am-10:05 pm

2 stops23h 00m

Seoul Gimpo Intl

Wed 3/11

12:05 pm-4:50 pm

2 stops20h 45m

$953

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Tue 3/3

7:05 am-10:05 pm

2 stops22h 00m

Seoul Gimpo Intl

Tue 3/10

12:05 pm-4:50 pm

2 stops20h 45m

$953

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Mon 3/2

7:05 am-10:05 pm

2 stops22h 00m

Seoul Gimpo Intl

Tue 3/10

12:05 pm-4:50 pm

2 stops20h 45m

$953

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Wed 3/4

7:05 am-10:05 pm

2 stops22h 00m

Seoul Gimpo Intl

Wed 3/11

12:05 pm-4:50 pm

2 stops20h 45m

$953

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Sun 3/8

7:05 am-10:05 pm

2 stops23h 00m

Seoul Gimpo Intl

Tue 3/10

12:05 pm-4:50 pm

2 stops20h 45m

$953

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 6/3

1:30 pm-9:50 pm

1 stop16h 20m

Seoul Gimpo Intl

Wed 6/17

7:55 am-10:35 am

1 stop18h 40m

$961

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Wed 2/25

7:05 am-6:20 pm

2 stops42h 15m

Seoul Gimpo Intl

Thu 3/5

8:00 am-4:50 pm

2 stops25h 50m

$993

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 48 results
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Best time to book a flight from Washington to Gimpo Intl

Have a flexible travel schedule? Discover the best time to fly to Gimpo Intl from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Seoul Gimpo Intl Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington to Gimpo Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Seoul Gimpo Intl Airport?

    Departing from State of Washington to Seoul Gimpo Intl Airport will take you 29h 15m. The distance from State of Washington to Seoul Gimpo Intl Airport is about 5182 mi.

  • What are the most popular routes from State of Washington to Seoul Gimpo Intl Airport?

    When deciding which route to take from State of Washington to Seoul Gimpo Intl Airport consider Seattle/Tacoma Intl - Seoul Gimpo Intl, Portland - Seoul Gimpo Intl or Spokane - Seoul Gimpo Intl as they are the most popular.

  • Can I find deals for flights from Washington to Gimpo Intl that include hotel bookings?

    Yes. In addition to deals on Washington to Gimpo Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Gimpo Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Gimpo Intl.

  • Can I find deals for business class flights from Washington to Gimpo Intl?

    Yes. Cheapflights offers flight deals from Washington to Gimpo Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Washington to Gimpo Intl

See prices for flight routes from nearby airports that may be better suited for you.
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