What are the cheapest airlines to fly from Washington, D.C. to Seoul Gimpo Intl Airport one-way?

For one-way options, check prices for EVA Air. According to our data, you can fly for as low as $715. Users have also found prices from $743 and $887 on Japan Airlines and Air China, respectively.

What is the cheapest day to fly from Washington, D.C. to Seoul Gimpo Intl Airport?

Travelers seeking maximum savings on their Washington, D.C. to Seoul Gimpo Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Seoul Gimpo Intl Airport ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul Gimpo Intl Airport when rainfall is around 1.1 in.

If weather is an important factor for your trip to Seoul Gimpo Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

What is the cheapest day to fly round-trip from Washington, D.C. to Seoul Gimpo Intl Airport?

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 14% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Washington, D.C. to Seoul Gimpo Intl Airport?

Travelers have found it’s best to book a flight 19 days in advance to save up to 128% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 19 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Washington, D.C. to Seoul Gimpo Intl Airport 1-2 weeks in advance for as low as $1,165, or $1,352 for flights within the next 24 hours.

What is the cheapest month to fly from Washington, D.C. to Seoul Gimpo Intl Airport?

January can be a great time to fly to Seoul Gimpo Intl Airport from Washington, D.C. with a flight ticket averaging about $1,357. Cheapflights users have found deals in the month of January for as cheap as $863. The most expensive prices can be found in the month of June.

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

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

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.

$586+ Flights from Washington, D.C. to Seoul Gimpo Intl Airport

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

Round-trip from	$1,181 (CheapOair)
One-way from	$586 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$1,696

From Washington, D.C. (WAS) to Seoul Gimpo Intl

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One-way flight from Washington, D.C. (WAS) to Seoul Gimpo Intl

Search Deals

Highest demand for flights based on searches. 19% potential increase in price ($331 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find 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 July 3, 2025.

Wed 8/138:19 amIAD - GMP

2 stops25h 06mMultiple Airlines

Wed 8/208:10 amGMP - IAD

2 stops26h 15mMultiple Airlines

Deal found 7/3

$1,181

Wed 10/156:00 amBWI - GMP

2 stops39h 45mJapan Airlines

Thu 11/137:50 amGMP - BWI

2 stops27h 47mJapan Airlines

Deal found 7/3

$1,185

Mon 8/187:20 pmDCA - GMP

2 stops33h 40mJapan Airlines

Tue 9/27:55 amGMP - DCA

2 stops28h 23mJapan Airlines

Deal found 7/3

$1,329

Tue 9/96:41 amBWI - GMP

2 stops26h 09mMultiple Airlines

Wed 9/247:55 amGMP - BWI

2 stops22h 55mMultiple Airlines

Deal found 7/2

$1,335

Mon 8/1810:09 pmDCA - GMP

2 stops23h 36mMultiple Airlines

Tue 9/27:55 amGMP - DCA

2 stops19h 37mMultiple Airlines

Deal found 7/1

$1,356

Thu 9/47:00 amIAD - GMP

2 stops25h 50mJapan Airlines

Thu 9/187:55 amGMP - IAD

2 stops36h 37mJapan Airlines

Deal found 6/30

$1,357

Wed 8/206:35 amIAD - GMP

2 stops41h 30mAir China

Tue 9/22:25 pmGMP - IAD

2 stops51h 59mAir China

Deal found 7/2

$1,497

Tue 10/712:15 pmIAD - GMP

1 stop33h 50mANA

Tue 10/217:55 pmGMP - IAD

1 stop27h 10mANA

Deal found 7/2

$1,623

Wed 8/273:30 pmDCA - GMP

2 stops30h 35mANA

Tue 9/27:55 pmGMP - DCA

2 stops31h 21mANA

Deal found 7/3

$1,641

Best flights from Washington, D.C. to Gimpo Intl
Discover carefully curated flight deals from Washington, D.C. to Gimpo Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Wed 8/138:19 amIAD - GMP

2 stops25h 06mMultiple Airlines

Wed 8/208:10 amGMP - IAD

2 stops26h 15mMultiple Airlines

Deal found 7/3

$1,181

Thu 9/44:44 pmBWI - GMP

2 stops36h 16mJapan Airlines

Thu 9/187:55 amGMP - BWI

2 stops22h 56mJapan Airlines

Deal found 7/2

$1,214

Wed 8/206:35 amIAD - GMP

2 stops41h 30mAir China

Tue 9/22:25 pmGMP - IAD

2 stops51h 59mAir China

Deal found 7/2

$1,497

Mon 8/2512:15 pmIAD - GMP

1 stop33h 50mANA

Thu 9/47:40 amGMP - IAD

1 stop20h 55mANA

Deal found 7/3

$1,627

Mon 8/187:20 pmDCA - GMP

2 stops33h 40mJapan Airlines

Tue 9/27:55 amGMP - DCA

2 stops28h 23mJapan Airlines

Deal found 7/3

$1,329

Tue 9/96:41 amBWI - GMP

2 stops26h 09mMultiple Airlines

Wed 9/247:55 amGMP - BWI

2 stops22h 55mMultiple Airlines

Deal found 7/2

$1,335

Mon 8/1810:09 pmDCA - GMP

2 stops23h 36mMultiple Airlines

Tue 9/27:55 amGMP - DCA

2 stops19h 37mMultiple Airlines

Deal found 7/1

$1,356

Thu 9/47:00 amIAD - GMP

2 stops25h 50mJapan Airlines

Thu 9/187:55 amGMP - IAD

2 stops36h 37mJapan Airlines

Deal found 6/30

$1,357

Wed 8/273:30 pmDCA - GMP

2 stops30h 35mANA

Tue 9/27:55 pmGMP - DCA

2 stops31h 21mANA

Deal found 7/3

$1,641

Sat 9/136:15 amBWI - GMP

2 stops39h 50mANA

Fri 9/267:55 pmGMP - BWI

2 stops31h 13mANA

Deal found 7/2

$1,989

Last-minute flights from Washington, D.C. to Gimpo Intl
Discover last-minute flight deals from Washington, D.C. to Gimpo Intl. Data last updated July 3, 2025 and is based on user searches.

Tue 7/86:50 amBWI - GMP

2 stops26h 00mMultiple Airlines

Thu 7/247:55 amGMP - BWI

2 stops28h 22mMultiple Airlines

Deal found 6/30

$2,197

Thu 7/106:00 amDCA - GMP

2 stops26h 50mJapan Airlines

Wed 7/167:55 amGMP - DCA

2 stops19h 38mJapan Airlines

Deal found 7/3

$1,976

Thu 7/1012:15 pmIAD - GMP

1 stop21h 05mANA

Thu 7/177:40 amGMP - IAD

1 stop21h 05mANA

Deal found 7/3

$2,227

Thu 7/106:27 amIAD - GMP

2 stops26h 23mMultiple Airlines

Tue 7/227:55 amGMP - IAD

2 stops21h 30mMultiple Airlines

Deal found 7/3

$2,366

Thu 7/108:40 pmDCA - GMP

3 stops35h 55mMultiple Airlines

Wed 7/168:20 amGMP - DCA

2 stops27h 07mMultiple Airlines

Deal found 7/3

$2,889

Fri 7/1111:00 pmIAD - GMP

1 stop25h 05mAir China

Fri 7/188:35 amGMP - IAD

1 stop23h 55mAir China

Deal found 7/3

$1,899

Fri 7/1110:59 amBWI - GMP

2 stops35h 06mANA

Fri 7/187:55 pmGMP - BWI

2 stops30h 53mANA

Deal found 7/3

$3,419

Sun 7/136:00 amBWI - GMP

2 stops47h 00mJapan Airlines

Tue 8/267:20 pmGMP - BWI

2 stops35h 30mJapan Airlines

Deal found 7/2

$1,505

Thu 7/246:00 amBWI - GMP

2 stops26h 50mMultiple Airlines

Tue 8/197:55 amGMP - BWI

2 stops28h 07mMultiple Airlines

Deal found 7/2

$1,424

Wed 8/138:19 amIAD - GMP

2 stops25h 06mMultiple Airlines

Wed 8/208:10 amGMP - IAD

2 stops26h 15mMultiple Airlines

Deal found 7/3

$1,181

Mon 8/186:00 amBWI - GMP

2 stops26h 50mJapan Airlines

Tue 9/27:55 amGMP - BWI

2 stops29h 04mJapan Airlines

Deal found 7/1

$1,255

Mon 8/187:20 pmDCA - GMP

2 stops33h 40mJapan Airlines

Tue 9/27:55 amGMP - DCA

2 stops28h 23mJapan Airlines

Deal found 7/3

$1,329

One-way flights from Washington, D.C. to Gimpo Intl
Search for one-way flight options from Washington, D.C. to Gimpo Intl. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Wed 9/1711:00 amIAD - GMP

3 stops59h 55mMultiple Airlines

Deal found 7/1

$586

Mon 7/146:22 pmBWI - GMP

3 stops58h 28mMultiple Airlines

Deal found 7/1

$634

Wed 8/277:22 pmBWI - GMP

2 stops28h 28mEVA Air

Deal found 7/1

$715

Wed 9/246:09 pmIAD - GMP

2 stops29h 41mEVA Air

Deal found 7/1

$717

Sun 8/316:00 amBWI - GMP

2 stops26h 50mJapan Airlines

Deal found 7/2

$743

Tue 7/159:59 amDCA - GMP

3 stops47h 11mMultiple Airlines

Deal found 7/1

$747

Wed 8/278:59 amDCA - GMP

2 stops38h 51mEVA Air

Deal found 7/1

$753

Wed 8/277:00 amIAD - GMP

2 stops25h 50mJapan Airlines

Deal found 7/1

$854

Tue 8/511:00 pmIAD - GMP

1 stop25h 05mAir China

Deal found 7/3

$887

Wed 8/276:30 amDCA - GMP

2 stops39h 15mJapan Airlines

Deal found 7/2

$896

Fri 9/198:30 amDCA - GMP

2 stops24h 50mANA

Deal found 7/3

$1,135

Mon 7/76:02 pmBWI - GMP

2 stops30h 03mAir China

Deal found 7/3

$1,141

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 8/13

8:19 am-10:25 pm

2 stops25h 06m

Seoul Gimpo Intl

Wed 8/20

8:10 am-9:25 pm

2 stops26h 15m

$1,181

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Thu 9/4

4:44 pm-6:00 pm

2 stops36h 16m

Seoul Gimpo Intl

Thu 9/18

7:55 am-5:51 pm

2 stops22h 56m

$1,214

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 8/18

7:20 pm-6:00 pm

2 stops33h 40m

Seoul Gimpo Intl

Tue 9/2

7:55 am-11:18 pm

2 stops28h 23m

$1,329

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Tue 9/9

6:41 am-9:50 pm

2 stops26h 09m

Seoul Gimpo Intl

Wed 9/24

7:55 am-5:50 pm

2 stops22h 55m

$1,335

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 8/18

10:09 pm-10:45 am

2 stops23h 36m

Seoul Gimpo Intl

Tue 9/2

7:55 am-2:32 pm

2 stops19h 37m

$1,356

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 9/4

7:00 am-9:50 pm

2 stops25h 50m

Seoul Gimpo Intl

Thu 9/18

7:55 am-7:32 am

2 stops36h 37m

$1,357

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 8/20

6:35 am-1:05 pm

2 stops41h 30m

Seoul Gimpo Intl

Tue 9/2

2:25 pm-5:24 am

2 stops51h 59m

$1,497

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 8/25

12:15 pm-11:05 am

1 stop33h 50m

Seoul Gimpo Intl

Thu 9/4

7:40 am-3:35 pm

1 stop20h 55m

$1,627

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 8/27

3:30 pm-11:05 am

2 stops30h 35m

Seoul Gimpo Intl

Tue 9/2

7:55 pm-2:16 pm

2 stops31h 21m

$1,641

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Sat 9/13

6:15 am-11:05 am

2 stops39h 50m

Seoul Gimpo Intl

Fri 9/26

7:55 pm-2:08 pm

2 stops31h 13m

$1,989

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 23 results

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.

Reviews of airlines servicing Gimpo Intl

See what other customers who have flown with EVA Air, ANA, and Japan Airlines from Washington, D.C. to Seoul Gimpo Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,215 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

EVA Air

8.4

Very good

1,215 reviews

EVA Air

8.4

Very good

1,215 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

ANA

8.4

Very good

893 reviews

EVA Air

8.4

Very good

1,215 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Japan Airlines

8.3

Very good

1,505 reviews

EVA Air

8.4

Very good

1,215 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Air China

7.2

Good

92 reviews

EVA Air

8.4

Very good

1,215 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

China Eastern

7.1

Good

152 reviews

EVA Air

8.4

Very good

1,215 reviews

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

What are the cheapest airlines to fly from Washington, D.C. to Seoul Gimpo Intl Airport one-way?
For one-way options, check prices for EVA Air. According to our data, you can fly for as low as $715. Users have also found prices from $743 and $887 on Japan Airlines and Air China, respectively.
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, Washington, D.C. Reagan-National - Seoul Gimpo Intl or Baltimore/Washington - 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

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$586+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheapest flights from Washington, D.C. to Gimpo IntlExplore 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 July 3, 2025.

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 July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Seoul Gimpo Intl Airport that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Seoul Gimpo Intl Airport

Reviews of airlines servicing Gimpo Intl

See what other customers who have flown with EVA Air, ANA, and Japan Airlines from Washington, D.C. to Seoul Gimpo Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What are the cheapest airlines to fly from Washington, D.C. to Seoul Gimpo Intl Airport one-way?

What are the most popular routes 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?

How can I 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?

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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 July 3, 2025.