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$478+ Cheap flights from Gimpo Intl (GMP) to Washington

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
GMP — SEA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Gimpo Intl to Washington

Keep the following information in mind while searching for Gimpo Intl to Washington flight deals. Data was last updated September 16, 2025.

Round-trip from

$877
(FlightHub)

One-way from

$478
(Mytrip)

Popular in

August

Cheapest in

June

Average price

$694
From Seoul Gimpo Intl to Washington
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One-way flight from Seoul Gimpo Intl to Washington
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Highest demand for flights based on searches. 7% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 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 Gimpo Intl to Washington

Cheapest flights from Gimpo Intl to Washington
Explore the most affordable flight options available from Gimpo Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Gotogate deal was found by Cheapflights users on 9/15. 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.
Fri 11/217:45 amGMP - SEA
1 stop22h 35mANA
Tue 11/2510:05 amSEA - GMP
2 stops19h 25mANA
Deal found 9/15$879
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:45 amGMP - SEA
1 stop22h 35mANA
Mon 2/210:05 amSEA - GMP
2 stops19h 25mANA
Deal found 9/16$889
This Tourvis 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/171:50 pmGMP - SEA
1 stop21h 40mEVA Air
Sun 10/191:30 amSEA - GMP
1 stop24h 40mEVA Air
Deal found 9/14$897
This Tourvis deal was found by Cheapflights users on 9/15. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:50 pmGMP - SEA
1 stop21h 20mEVA Air
Thu 11/612:10 amSEA - GMP
1 stop19h 40mEVA Air
Deal found 9/15$901
This Gotogate deal was found by Cheapflights users on 9/13. 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.
Fri 10/1012:40 pmGMP - SEA
1 stop17h 45mANA
Thu 10/304:40 pmSEA - GMP
1 stop33h 55mANA
Deal found 9/13$909
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.
Thu 10/2312:40 pmGMP - SEA
1 stop17h 45mANA
Mon 10/274:40 pmSEA - GMP
1 stop33h 55mANA
Deal found 9/14$910
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.
Mon 10/137:40 amGMP - SEA
1 stop22h 45mANA
Mon 10/274:40 pmSEA - GMP
1 stop26h 40mANA
Deal found 9/14$913
This Trip.com deal was found by Cheapflights users on 9/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/51:50 pmGMP - SEA
1 stop21h 20mEVA Air
Sun 12/2812:10 amSEA - GMP
1 stop24h 50mEVA Air
Deal found 9/13$931
This ANA 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:45 amGMP - SEA
1 stop22h 35mANA
Mon 1/57:12 pmSEA - GMP
2 stops23h 08mANA
Deal found 9/14$934
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:00 amGMP - PDX
2 stops22h 04mMultiple Airlines
Wed 11/55:30 amPDX - GMP
2 stops23h 35mMultiple Airlines
Deal found 9/13$1,238
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Thu 10/307:45 amGMP - PDX
2 stops26h 45mANA
Thu 11/69:50 amPDX - GMP
2 stops19h 40mANA
Deal found 9/15$1,300
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.
Sat 10/257:55 amGMP - PDX
2 stops21h 48mJapan Airlines
Tue 11/49:34 amPDX - GMP
2 stops19h 31mJapan Airlines
Deal found 9/14$1,335

Cheapflights Fare Finder

 
Customize your flight search to find flights from Gimpo Intl to Washington 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 September 16, 2025.
Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to Washington that are best for you.

Fly from

Gimpo Intl

Fly to

Washington

Route

Depart

Return

Price

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Tue 2/3

12:25 pm-7:16 pm

2 stops23h 51m

Seattle/Tacoma Intl

Tue 2/24

3:45 pm-11:20 am

1 stop26h 35m

$877

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 10/17

1:50 pm-7:30 pm

1 stop21h 40m

Seattle/Tacoma Intl

Sun 10/19

1:30 am-6:10 pm

1 stop24h 40m

$897

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Thu 10/23

12:40 pm-2:25 pm

1 stop17h 45m

Seattle/Tacoma Intl

Mon 10/27

4:40 pm-6:35 pm

1 stop33h 55m

$910

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Wed 2/11

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Fri 2/27

7:15 am-10:30 pm

2 stops22h 15m

$912

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Thu 2/12

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Thu 2/19

3:45 pm-6:35 pm

1 stop33h 50m

$913

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Thu 2/12

12:25 pm-1:20 pm

1 stop17h 55m

Seattle/Tacoma Intl

Fri 2/20

3:45 pm-11:20 am

1 stop26h 35m

$929

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Tue 12/16

12:25 pm-1:20 pm

1 stop17h 55m

Seattle/Tacoma Intl

Mon 1/12

3:45 pm-11:20 am

1 stop26h 35m

$934

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Tue 12/16

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Mon 1/5

3:45 pm-6:35 pm

1 stop33h 50m

$934

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Sat 11/1

1:50 pm-6:30 pm

1 stop20h 40m

Seattle/Tacoma Intl

Thu 11/6

12:10 am-12:50 pm

1 stop19h 40m

$955

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Fri 2/20

7:45 am-2:48 pm

2 stops48h 03m

Portland

Mon 2/23

9:50 am-10:30 pm

2 stops19h 40m

$1,119

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 33 results
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Best time to book a flight from Gimpo Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Gimpo Intl 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 Seoul Gimpo Intl Airport to Washington

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

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul Gimpo Intl Airport to State of Washington as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Gimpo Intl to Washington. 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 Seoul Gimpo Intl Airport to State of Washington?

    There are many flights that can get you from Seoul Gimpo Intl Airport to State of Washington in 21h 40m. Fly via ANA or EVA Air to get the fastest option. There are 5182 mi between Seoul Gimpo Intl Airport and State of Washington. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Seoul Gimpo Intl Airport to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Seoul Gimpo Intl Airport to State of Washington (average of $238). Flying from Seoul Gimpo Intl Airport to State of Washington in June is currently the most expensive (average of $387). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Gimpo Intl to Washington

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