HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Gimpo Intl

$452+ Cheap flights from Washington, D.C. (WAS) 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — GMP
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Gimpo Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington, D.C. to Gimpo Intl

Cheapest flights from Washington, D.C. to Gimpo Intl
Explore the most affordable flight options available from Washington, D.C. to Gimpo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This Trip.com deal was found by Cheapflights users on 1/19. 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.
Sun 1/256:00 am
DCA
-
GMP
2 stops38h 55m
Multiple Airlines
Wed 2/188:00 am
GMP
-
DCA
2 stops28h 59m
Multiple Airlines
Deal found 1/19$1,191
This Trip.com deal was found by Cheapflights users on 1/19. 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.
Sun 1/256:00 am
DCA
-
GMP
2 stops38h 55m
Multiple Airlines
Sun 2/17:40 pm
GMP
-
DCA
2 stops41h 19m
Multiple Airlines
Deal found 1/19$1,201
This Cheapflightsfares deal was found by Cheapflights users on 1/19. 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.
Sat 4/117:55 pm
BWI
-
GMP
2 stops25h 50m
Japan Airlines
Thu 4/237:55 am
GMP
-
BWI
2 stops23h 01m
Japan Airlines
Deal found 1/19$1,212
This KAYAK deal was found by Cheapflights users on 1/19. 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.
Sat 4/117:55 pm
BWI
-
GMP
2 stops25h 50m
Japan Airlines
Tue 4/217:55 am
GMP
-
BWI
2 stops23h 01m
Japan Airlines
Deal found 1/19$1,243
This KAYAK deal was found by Cheapflights users on 1/19. 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.
Sat 4/117:55 pm
BWI
-
GMP
2 stops25h 50m
Japan Airlines
Mon 4/207:55 am
GMP
-
BWI
2 stops28h 52m
Japan Airlines
Deal found 1/19$1,254
This oojo deal was found by Cheapflights users on 1/19. 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 3/310:00 pm
IAD
-
GMP
1 stop25h 05m
Air China
Tue 5/198:35 am
GMP
-
IAD
1 stop23h 55m
Air China
Deal found 1/19$1,263
This oojo deal was found by Cheapflights users on 1/19. 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 3/310:00 pm
IAD
-
GMP
1 stop25h 05m
Air China
Tue 6/28:35 am
GMP
-
IAD
1 stop23h 55m
Air China
Deal found 1/19$1,276
This KAYAK deal was found by Cheapflights users on 1/19. 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.
Sat 4/117:55 pm
BWI
-
GMP
2 stops25h 50m
Japan Airlines
Thu 4/167:55 am
GMP
-
BWI
2 stops23h 01m
Japan Airlines
Deal found 1/19$1,287
This KAYAK deal was found by Cheapflights users on 1/19. 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.
Sat 4/117:55 pm
BWI
-
GMP
2 stops25h 50m
Japan Airlines
Wed 4/157:55 am
GMP
-
BWI
2 stops28h 52m
Japan Airlines
Deal found 1/19$1,298
This Japan Airlines deal was found by Cheapflights users on 1/19. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1811:53 am
BWI
-
GMP
2 stops33h 02m
Multiple Airlines
Wed 2/257:40 pm
GMP
-
BWI
2 stops37h 59m
Multiple Airlines
Deal found 1/19$1,299
This Booking.com deal was found by Cheapflights users on 1/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:00 am
IAD
-
GMP
2 stops24h 20m
Multiple Airlines
Tue 4/218:10 am
GMP
-
IAD
3 stops40h 07m
Multiple Airlines
Deal found 1/19$1,299
This Gurufare deal was found by Cheapflights users on 1/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/26:00 am
BWI
-
GMP
2 stops38h 55m
Japan Airlines
Thu 2/57:40 pm
GMP
-
BWI
2 stops36h 17m
Japan Airlines
Deal found 1/19$1,306

Find flight deals from Washington, D.C. to Gimpo Intl

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Gimpo Intl (GMP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,212
(Cheapflightsfares)

One-way from

$452
(KAYAK)

Popular in

December

Cheapest in

March

Average price

$1,204
Provider with most accurate pricing for Washington, D.C. (WAS)-Seoul Gimpo Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seoul Gimpo Intl flights.
Search Deals
From Washington, D.C. (WAS) to Seoul Gimpo Intl
Search Deals
One-way flight from Washington, D.C. (WAS) to Seoul Gimpo Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($65 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, D.C. 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 20, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Seoul Gimpo Intl Airport that are best for you.

Fly from

Washington, D.C.

Fly to

Gimpo Intl

Route

Depart

Return

Price

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Sun 4/12

7:55 pm-10:45 am

2 stops25h 50m

Seoul Gimpo Intl

Tue 4/21

7:55 am-5:56 pm

2 stops23h 01m

$1,243

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Mon 4/13

7:55 pm-10:45 am

2 stops25h 50m

Seoul Gimpo Intl

Tue 4/21

7:55 am-5:56 pm

2 stops23h 01m

$1,243

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Sat 4/11

7:55 pm-10:45 am

2 stops25h 50m

Seoul Gimpo Intl

Thu 4/16

7:55 am-5:56 pm

2 stops23h 01m

$1,287

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Wed 2/18

11:53 am-10:55 am

2 stops33h 02m

Seoul Gimpo Intl

Wed 2/25

7:40 pm-7:39 pm

2 stops37h 59m

$1,299

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Wed 2/18

6:50 am-10:55 am

2 stops38h 05m

Seoul Gimpo Intl

Tue 3/10

8:00 am-11:33 pm

2 stops28h 33m

$1,312

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Thu 2/19

11:53 am-10:55 am

2 stops33h 02m

Seoul Gimpo Intl

Sun 3/8

7:40 pm-6:04 pm

2 stops35h 24m

$1,397

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 3/4

9:40 am-10:30 pm

2 stops22h 50m

Seoul Gimpo Intl

Wed 3/11

7:45 am-10:35 pm

2 stops27h 50m

$1,448

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 3/17

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 3/27

8:40 am-7:30 pm

1 stop23h 50m

$1,478

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Sat 1/31

6:00 am-10:55 am

2 stops38h 55m

Seoul Gimpo Intl

Sun 2/8

7:40 pm-11:59 pm

2 stops42h 19m

$1,508

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 4/9

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Tue 7/7

7:55 pm-2:03 pm

2 stops31h 08m

$1,514

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 57 results
1
2
3
...
6

Compare providers for flights from Washington, D.C. to Gimpo Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Gimpo Intl in January.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Seoul Gimpo Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Seoul Gimpo Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Seoul Gimpo Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Seoul Gimpo Intl Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Seoul Gimpo Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Gimpo Intl

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

    Japan Airlines, Air China, and ANA can get you from Washington, D.C. to Seoul Gimpo Intl Airport in just under 21h 05m. Your travel time can differ by up to 4h 45m. Airlines will cover a distance of 6925 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Washington, D.C. to Seoul Gimpo Intl Airport?

    Most travelers choose Washington, D.C. Dulles Intl - Seoul Gimpo Intl, Baltimore/Washington - Seoul Gimpo Intl or Washington, D.C. Reagan-National - Seoul Gimpo Intl when deciding on the best route from Washington, D.C. to Seoul Gimpo Intl Airport.

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

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

  • How can I find direct flights from Washington, D.C. 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, D.C. to Gimpo Intl.

  • Can I find deals for business class flights from Washington, D.C. to Gimpo Intl?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Gimpo Intl

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Incheon Intl flights
Reagan-National to Incheon Intl flights
Dulles Intl to Gimpo Intl flights
Reagan-National to Gimpo Intl flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.