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Gimpo Intl

$426+ Cheap flights from Dulles Intl (IAD) 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — GMP
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Dulles Intl to Gimpo Intl

Cheapest flights from Dulles Intl to Gimpo Intl
Explore the most affordable flight options available from Dulles Intl to Gimpo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This American Airlines deal was found by Cheapflights users on 1/20. 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 1/216:00 am
IAD
-
GMP
2 stops26h 05m
Multiple Airlines
Wed 1/287:40 pm
GMP
-
IAD
2 stops39h 37m
Multiple Airlines
Deal found 1/20$861
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:00 pm
IAD
-
GMP
1 stop26h 10m
Multiple Airlines
Tue 3/1011:25 am
GMP
-
IAD
2 stops35h 45m
Multiple Airlines
Deal found 1/20$1,178
This oojo deal was found by Cheapflights users on 1/20. 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 3/108:40 am
GMP
-
IAD
1 stop23h 50m
Air China
Deal found 1/20$1,263
This CheapOair deal was found by Cheapflights users on 1/20. 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 CheapOair 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 4/217:40 am
GMP
-
IAD
2 stops45h 29m
Multiple Airlines
Deal found 1/20$1,410
This oojo deal was found by Cheapflights users on 1/20. 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 1/2710:00 pm
IAD
-
GMP
1 stop25h 05m
Air China
Tue 2/38:40 am
GMP
-
IAD
1 stop23h 50m
Air China
Deal found 1/20$1,449
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Tue 2/39:00 am
IAD
-
GMP
2 stops23h 05m
Multiple Airlines
Fri 2/68:00 am
GMP
-
IAD
2 stops26h 29m
Multiple Airlines
Deal found 1/20$1,451
This oojo deal was found by Cheapflights users on 1/20. 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 3/1711:00 pm
IAD
-
GMP
1 stop25h 05m
Air China
Fri 3/278:40 am
GMP
-
IAD
1 stop23h 50m
Air China
Deal found 1/20$1,478
This Travelocity deal was found by Cheapflights users on 1/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:19 am
IAD
-
GMP
2 stops25h 01m
Multiple Airlines
Thu 7/238:10 am
GMP
-
IAD
2 stops35h 15m
Multiple Airlines
Deal found 1/20$1,488
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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.
Tue 4/712:15 pm
IAD
-
GMP
1 stop21h 05m
ANA
Tue 4/217:40 am
GMP
-
IAD
1 stop21h 00m
ANA
Deal found 1/20$1,505
This Mytrip deal was found by Cheapflights users on 1/21. 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.
Wed 9/29:55 am
IAD
-
GMP
2 stops22h 55m
Multiple Airlines
Wed 9/98:10 am
GMP
-
IAD
2 stops25h 55m
Multiple Airlines
Deal found 1/21$1,506

Find flight deals from Dulles Intl to Gimpo Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) 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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,178
(Kiwi.com)

One-way from

$426
(oojo)

Popular in

December

Cheapest in

March

Average price

$1,204
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Seoul Gimpo Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Seoul Gimpo Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to Seoul Gimpo Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl 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 Dulles Intl 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 21, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport that are best for you.

Fly from

Dulles Intl

Fly to

Gimpo Intl

Route

Depart

Return

Price

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 4/13

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Wed 4/22

7:55 pm-3:40 pm

1 stop32h 45m

$1,603

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 4/7

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Tue 4/21

7:40 am-3:40 pm

1 stop21h 00m

$1,603

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

Wed 4/8

8:35 am-1:25 am

2 stops29h 50m

$1,632

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 4/30

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Fri 5/22

12:40 pm-10:05 am

1 stop34h 25m

$1,657

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 2/4

11:10 am-10:30 pm

1 stop21h 20m

Seoul Gimpo Intl

Thu 6/25

7:40 am-3:50 pm

1 stop21h 10m

$1,685

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 2/19

7:05 am-10:05 pm

2 stops25h 00m

Seoul Gimpo Intl

Thu 2/26

12:05 pm-5:40 am

2 stops31h 35m

$1,732

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 2/18

1:02 pm-11:20 am

2 stops32h 18m

Seoul Gimpo Intl

Wed 2/25

7:50 pm-11:49 am

2 stops29h 59m

$1,734

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 2/12

11:10 am-10:30 pm

1 stop21h 20m

Seoul Gimpo Intl

Thu 2/19

7:50 pm-11:49 am

2 stops29h 59m

$1,739

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 3/6

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 3/13

3:50 pm-9:21 pm

2 stops18h 31m

$1,784

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 3/3

1:02 pm-11:20 am

2 stops32h 18m

Seoul Gimpo Intl

Tue 3/10

7:35 pm-5:21 am

2 stops22h 46m

$1,784

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 23 results
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Compare providers for flights from Dulles Intl 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 Dulles Intl to Gimpo Intl in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*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. Dulles Intl Airport-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. Dulles Intl Airport-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. Dulles Intl Airport-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. Dulles Intl Airport-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. Dulles Intl Airport-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 Dulles Intl to Gimpo Intl

Have a flexible travel schedule? Discover the best time to fly to Gimpo Intl from Dulles 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.

Related info for your journey

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

    A quick flight from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport can take about 21h 05m. ANA provides one of the quickest options available for as low as $1,603. Washington, D.C. Dulles Intl Airport and Seoul Gimpo Intl Airport are separated by a distance of 6925 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl 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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