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Gimpo Intl

$437+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GMP
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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Cheap 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 septiembre 16, 2025.

Round-trip from

$876
(oojo)

One-way from

$437
(oojo)

Popular in

June

Cheapest in

August

Average price

$929
From Washington to Seoul Gimpo Intl
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One-way flight from Washington to Seoul Gimpo Intl
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Highest demand for flights based on searches. 17% potential increase in price ($236 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 16, 2025.

This oojo deal was found by Cheapflights users on 9/14. 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.
lun. 10/201:30 pmSEA - GMP
1 stop16h 20mJapan Airlines
jue. 10/237:20 pmGMP - SEA
1 stop31h 05mJapan Airlines
Deal found 9/14$876
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/912:10 pmSEA - GMP
1 stop16h 55mJapan Airlines
jue. 11/137:40 pmGMP - SEA
1 stop31h 10mJapan Airlines
Deal found 9/16$878
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/1012:10 pmSEA - GMP
1 stop16h 55mJapan Airlines
vie. 11/148:00 amGMP - SEA
1 stop18h 50mJapan Airlines
Deal found 9/16$879
This oojo deal was found by Cheapflights users on 9/16. 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.
lun. 9/221:30 pmSEA - GMP
1 stop16h 20mJapan Airlines
lun. 10/207:55 amGMP - SEA
2 stops43h 43mJapan Airlines
Deal found 9/16$882
This FlightHub deal was found by Cheapflights users on 9/14. 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.
lun. 11/1012:10 pmSEA - GMP
1 stop16h 55mJapan Airlines
jue. 11/207:40 pmGMP - SEA
1 stop31h 10mJapan Airlines
Deal found 9/14$884
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/512:10 pmSEA - GMP
1 stop16h 55mJapan Airlines
mié. 11/1212:05 pmGMP - SEA
1 stop14h 45mJapan Airlines
Deal found 9/14$888
This oojo deal was found by Cheapflights users on 9/14. 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.
mié. 11/128:24 amSEA - GMP
2 stops20h 41mJapan Airlines
mié. 11/1912:05 pmGMP - SEA
1 stop14h 45mJapan Airlines
Deal found 9/14$893
This FlightHub deal was found by Cheapflights users on 9/16. 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.
dom. 10/191:30 pmSEA - GMP
1 stop16h 20mJapan Airlines
lun. 11/1012:05 pmGMP - SEA
2 stops22h 00mJapan Airlines
Deal found 9/16$901
This oojo deal was found by Cheapflights users on 9/16. 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.
sáb. 11/2912:10 pmSEA - GMP
1 stop16h 55mJapan Airlines
mié. 12/107:40 pmGMP - SEA
1 stop31h 10mJapan Airlines
Deal found 9/16$908
This oojo deal was found by Cheapflights users on 9/14. 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.
mié. 11/2612:10 pmSEA - GMP
1 stop16h 55mJapan Airlines
dom. 12/2112:05 pmGMP - SEA
1 stop14h 45mJapan Airlines
Deal found 9/14$909
This oojo deal was found by Cheapflights users on 9/14. 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.
lun. 11/2412:10 pmSEA - GMP
1 stop16h 55mJapan Airlines
mar. 12/212:05 pmGMP - SEA
2 stops38h 03mJapan Airlines
Deal found 9/14$915
This Orbitz deal was found by Cheapflights users on 9/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/247:00 amPDX - GMP
2 stops22h 50mJapan Airlines
mar. 10/147:20 pmGMP - PDX
2 stops37h 34mJapan Airlines
Deal found 9/14$941

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 septiembre 16, 2025.
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

jue. 2/5

6:02 am-10:05 pm

2 stops23h 03m

Seoul Gimpo Intl

mié. 2/11

8:00 am-10:43 pm

2 stops31h 43m

$991

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

dom. 2/8

6:02 am-10:05 pm

2 stops23h 03m

Seoul Gimpo Intl

mié. 2/11

8:00 am-10:43 pm

2 stops31h 43m

$991

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

mar. 2/3

6:02 am-10:05 pm

2 stops23h 03m

Seoul Gimpo Intl

mar. 2/10

8:00 am-10:43 pm

2 stops31h 43m

$991

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

jue. 2/5

6:02 am-10:05 pm

2 stops23h 03m

Seoul Gimpo Intl

mar. 2/10

8:00 am-10:43 pm

2 stops31h 43m

$991

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

mié. 2/4

6:02 am-10:05 pm

2 stops23h 03m

Seoul Gimpo Intl

mié. 2/11

8:00 am-10:43 pm

2 stops31h 43m

$991

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

mar. 2/3

6:02 am-10:05 pm

2 stops23h 03m

Seoul Gimpo Intl

jue. 2/5

12:05 pm-10:43 pm

2 stops27h 38m

$991

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

mié. 2/4

6:02 am-10:05 pm

2 stops23h 03m

Seoul Gimpo Intl

lun. 2/9

8:00 am-10:43 pm

2 stops31h 43m

$991

PortlandSeoul

PDX - GMP

PDXGMP

Portland

mar. 1/20

7:00 am-10:05 pm

2 stops22h 05m

Seoul Gimpo Intl

jue. 2/5

12:05 pm-4:28 pm

2 stops21h 23m

$1,065

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

dom. 3/8

1:10 am-6:00 pm

1 stop24h 50m

Seoul Gimpo Intl

vie. 3/20

1:50 pm-7:10 pm

1 stop21h 20m

$1,076

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

lun. 3/9

1:10 am-7:15 pm

1 stop26h 05m

Seoul Gimpo Intl

vie. 3/20

1:50 pm-7:10 pm

1 stop21h 20m

$1,076

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 44 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

What is the cheapest time of day to fly from WA to GMP?

Find hourly flight availability from Washington to Gimpo Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 16, 2025.

When flying from State of Washington to Seoul Gimpo Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 23h 03m. The distance from State of Washington to Seoul Gimpo Intl Airport is about 5182 mi. This flight may include one or multiple stops.

  • 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.

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