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

To fly one-way, consider booking your trip with Japan Airlines, which is currently one of the cheapest options available, starting at $595. EVA Air flights start at $704 while deals on ANA start at $1,119 one-way.

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

Currently, August is the cheapest month in which you can book a flight from Seoul Gimpo Intl Airport to Washington, D.C. (average of $241). Flying from Seoul Gimpo Intl Airport to Washington, D.C. in March is currently the most expensive (average of $290). 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.

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

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

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 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 Seoul Gimpo Intl Airport to Washington, D.C.?

When deciding which route to take from Seoul Gimpo Intl Airport to Washington, D.C. consider Seoul Gimpo Intl - Washington, D.C. Dulles Intl, Seoul Gimpo Intl - Washington, D.C. Reagan-National or Seoul Gimpo Intl - Baltimore/Washington as they are the most popular.

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

To save on the cost of your flight from Seoul Gimpo Intl Airport to Washington, D.C., book at least 56 days before your planned departure. Booking around this time can save you about 87% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $827 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $2,963.

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

Flights from Seoul Gimpo Intl Airport to Washington, D.C. lean towards being more expensive in July. Prices are generally better when you fly from Seoul Gimpo Intl Airport to Washington, D.C. in February, with the cheapest ticket starting at $748.

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

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

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

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

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

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, D.C..

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

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

$514+ Flights from Seoul Gimpo Intl Airport to Washington, D.C.

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

Round-trip from	$966 (WhyPayMore)
One-way from	$514 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$1,179

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

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

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Highest demand for flights based on searches. 10% potential increase in price ($121 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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

Cheapest flights from Gimpo Intl to Washington, D.C.
Explore the most affordable flight options available from Gimpo Intl to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

Wed 9/107:55 pmGMP - IAD

1 stop27h 10mANA

Wed 11/2611:05 amIAD - GMP

1 stop21h 25mANA

Deal found 8/2

$966

Wed 10/87:55 amGMP - DCA

2 stops28h 02mJapan Airlines

Mon 10/136:38 amDCA - GMP

2 stops26h 12mJapan Airlines

Deal found 8/1

$987

Sat 9/207:55 amGMP - DCA

2 stops21h 24mMultiple Airlines

Sat 9/2710:45 pmDCA - GMP

2 stops23h 00mMultiple Airlines

Deal found 7/31

$993

Sun 9/147:55 amGMP - BWI

2 stops28h 23mMultiple Airlines

Sun 9/216:30 amBWI - GMP

2 stops26h 20mMultiple Airlines

Deal found 7/31

$1,011

Tue 10/77:55 pmGMP - DCA

2 stops31h 21mANA

Mon 10/133:30 pmDCA - GMP

2 stops41h 50mANA

Deal found 8/1

$1,052

Fri 9/197:55 amGMP - BWI

2 stops22h 55mJapan Airlines

Mon 10/136:00 amBWI - GMP

2 stops50h 50mJapan Airlines

Deal found 8/1

$1,075

Mon 11/1712:25 pmGMP - BWI

2 stops42h 49mANA

Sun 11/2310:56 amBWI - GMP

2 stops45h 34mANA

Deal found 8/1

$1,294

Best flights from Gimpo Intl to Washington, D.C.
Discover carefully curated flight deals from Gimpo Intl to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 2, 2025.

Wed 9/107:55 pmGMP - IAD

1 stop27h 10mANA

Wed 11/2611:05 amIAD - GMP

1 stop21h 25mANA

Deal found 8/2

$966

Wed 10/87:55 amGMP - DCA

2 stops28h 02mJapan Airlines

Mon 10/136:38 amDCA - GMP

2 stops26h 12mJapan Airlines

Deal found 8/1

$987

Sat 9/207:55 amGMP - DCA

2 stops21h 24mMultiple Airlines

Sat 9/2710:45 pmDCA - GMP

2 stops23h 00mMultiple Airlines

Deal found 7/31

$993

Sun 9/147:55 amGMP - BWI

2 stops28h 23mMultiple Airlines

Sun 9/216:30 amBWI - GMP

2 stops26h 20mMultiple Airlines

Deal found 7/31

$1,011

Tue 10/77:55 pmGMP - DCA

2 stops31h 21mANA

Mon 10/133:30 pmDCA - GMP

2 stops41h 50mANA

Deal found 8/1

$1,052

Fri 9/197:55 amGMP - BWI

2 stops22h 55mJapan Airlines

Mon 10/136:00 amBWI - GMP

2 stops50h 50mJapan Airlines

Deal found 8/1

$1,075

Mon 11/1712:25 pmGMP - BWI

2 stops42h 49mANA

Sun 11/2310:56 amBWI - GMP

2 stops45h 34mANA

Deal found 8/1

$1,294

Last-minute flights from Gimpo Intl to Washington, D.C.
Discover last-minute flight deals from Gimpo Intl to Washington, D.C.. Data last updated August 2, 2025 and is based on user searches.

Thu 8/712:40 pmGMP - IAD

1 stop34h 25mANA

Thu 8/1412:15 pmIAD - GMP

1 stop33h 50mANA

Deal found 7/31

$1,601

Thu 8/77:40 amGMP - BWI

2 stops43h 08mANA

Thu 8/216:15 amBWI - GMP

2 stops47h 20mANA

Deal found 7/31

$1,988

Thu 8/712:40 pmGMP - IAD

2 stops21h 40mMultiple Airlines

Tue 8/1212:15 pmIAD - GMP

1 stop21h 05mMultiple Airlines

Deal found 7/31

$2,564

Sun 8/107:20 pmGMP - BWI

2 stops35h 30mJapan Airlines

Mon 8/186:00 amBWI - GMP

2 stops50h 50mJapan Airlines

Deal found 7/31

$1,628

Mon 8/117:55 amGMP - DCA

2 stops19h 20mJapan Airlines

Thu 8/2110:09 pmDCA - GMP

2 stops23h 36mJapan Airlines

Deal found 7/31

$1,605

Mon 8/1112:05 pmGMP - IAD

2 stops32h 22mJapan Airlines

Wed 8/136:30 amIAD - GMP

2 stops26h 20mJapan Airlines

Deal found 7/30

$1,606

Tue 8/128:35 amGMP - IAD

1 stop23h 55mAir China

Fri 9/1211:00 pmIAD - GMP

1 stop25h 05mAir China

Deal found 8/1

$2,537

Tue 8/127:40 amGMP - DCA

2 stops26h 22mANA

Sat 8/161:00 pmDCA - GMP

2 stops33h 05mANA

Deal found 8/2

$2,612

Tue 8/1912:05 pmGMP - BWI

2 stops24h 54mJapan Airlines

Thu 8/286:00 amBWI - GMP

2 stops26h 50mJapan Airlines

Deal found 8/1

$1,503

Tue 8/197:40 amGMP - DCA

2 stops26h 23mANA

Thu 2/198:30 amDCA - GMP

2 stops24h 00mANA

Deal found 8/1

$1,982

Fri 8/227:55 amGMP - BWI

2 stops28h 07mMultiple Airlines

Wed 8/277:00 amBWI - GMP

2 stops25h 50mMultiple Airlines

Deal found 7/31

$1,378

Fri 8/227:55 amGMP - IAD

2 stops24h 05mMultiple Airlines

Wed 8/276:27 amIAD - GMP

2 stops26h 23mMultiple Airlines

Deal found 7/31

$1,403

One-way flights from Gimpo Intl to Washington, D.C.
Search for one-way flight options from Gimpo Intl to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 2, 2025.

Tue 8/266:55 pmGMP - BWI

3 stops48h 59mMultiple Airlines

Deal found 8/1

$514

Wed 10/157:55 amGMP - DCA

2 stops19h 33mJapan Airlines

Deal found 7/30

$595

Wed 9/107:55 amGMP - IAD

2 stops36h 38mJapan Airlines

Deal found 8/1

$611

Wed 9/107:55 amGMP - BWI

2 stops22h 55mJapan Airlines

Deal found 8/1

$611

Tue 8/266:55 pmGMP - DCA

3 stops39h 04mMultiple Airlines

Deal found 8/1

$655

Fri 10/241:50 pmGMP - DCA

2 stops44h 24mEVA Air

Deal found 8/1

$704

Thu 9/47:55 amGMP - IAD

2 stops27h 46mMultiple Airlines

Deal found 7/31

$721

Fri 10/241:50 pmGMP - IAD

2 stops30h 43mEVA Air

Deal found 8/1

$844

Fri 10/241:50 pmGMP - BWI

2 stops29h 22mEVA Air

Deal found 8/1

$844

Thu 9/47:55 pmGMP - IAD

1 stop27h 10mANA

Deal found 7/31

$1,119

Tue 9/28:35 amGMP - IAD

1 stop23h 55mAir China

Deal found 8/1

$1,173

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Wed 9/10

7:55 pm-10:05 am

1 stop27h 10m

Washington, D.C. Dulles Intl

Wed 11/26

11:05 am-10:30 pm

1 stop21h 25m

$966

SeoulWashington, D.C.

GMP - DCA

GMPDCA

Seoul Gimpo Intl

Wed 10/8

7:55 am-10:57 pm

2 stops28h 02m

Washington, D.C. Reagan-National

Mon 10/13

6:38 am-9:50 pm

2 stops26h 12m

$987

SeoulWashington, D.C.

GMP - DCA

GMPDCA

Seoul Gimpo Intl

Sat 9/20

7:55 am-4:19 pm

2 stops21h 24m

Washington, D.C. Reagan-National

Sat 9/27

10:45 pm-10:45 am

2 stops23h 00m

$993

SeoulBaltimore

GMP - BWI

GMPBWI

Seoul Gimpo Intl

Sun 9/14

7:55 am-11:18 pm

2 stops28h 23m

Baltimore/Washington

Sun 9/21

6:30 am-9:50 pm

2 stops26h 20m

$1,011

SeoulWashington, D.C.

GMP - DCA

GMPDCA

Seoul Gimpo Intl

Tue 10/7

7:55 pm-2:16 pm

2 stops31h 21m

Washington, D.C. Reagan-National

Mon 10/13

3:30 pm-10:20 pm

2 stops41h 50m

$1,052

SeoulBaltimore

GMP - BWI

GMPBWI

Seoul Gimpo Intl

Fri 9/19

7:55 am-5:50 pm

2 stops22h 55m

Baltimore/Washington

Mon 10/13

6:00 am-9:50 pm

2 stops50h 50m

$1,075

SeoulBaltimore

GMP - BWI

GMPBWI

Seoul Gimpo Intl

Mon 11/17

12:25 pm-5:14 pm

2 stops42h 49m

Baltimore/Washington

Sun 11/23

10:56 am-10:30 pm

2 stops45h 34m

$1,294

SeoulBaltimore

GMP - BWI

GMPBWI

Seoul Gimpo Intl

Tue 8/26

6:55 pm-6:54 am

3 stops48h 59m

$514

SeoulWashington, D.C.

GMP - DCA

GMPDCA

Seoul Gimpo Intl

Wed 10/15

7:55 am-2:28 pm

2 stops19h 33m

$595

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Wed 9/10

7:55 am-7:33 am

2 stops36h 38m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 18 results

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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, D.C.

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with EVA Air, ANA, and Japan Airlines from Seoul Gimpo Intl Airport to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,220 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

1,220 reviews

EVA Air

8.4

Very good

1,220 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

922 reviews

EVA Air

8.4

Very good

1,220 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

1,541 reviews

EVA Air

8.4

Very good

1,220 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

7.3

Good

93 reviews

EVA Air

8.4

Very good

1,220 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 Seoul Gimpo Intl Airport to Washington, D.C. one-way?
To fly one-way, consider booking your trip with Japan Airlines, which is currently one of the cheapest options available, starting at $595. EVA Air flights start at $704 while deals on ANA start at $1,119 one-way.
What are the most popular routes from Seoul Gimpo Intl Airport to Washington, D.C.?
When deciding which route to take from Seoul Gimpo Intl Airport to Washington, D.C. consider Seoul Gimpo Intl - Washington, D.C. Dulles Intl, Seoul Gimpo Intl - Washington, D.C. Reagan-National or Seoul Gimpo Intl - Baltimore/Washington as they are the most popular.
Can I find deals for flights from Gimpo Intl to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Gimpo Intl to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Gimpo Intl to Washington, D.C.?
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, D.C..
Can I find deals for business class flights from Gimpo Intl to Washington, D.C.?
Yes. Cheapflights offers flight deals from Gimpo Intl to Washington, D.C. 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 Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Seoul Gimpo Intl Airport to Washington, D.C. (average of $241). Flying from Seoul Gimpo Intl Airport to Washington, D.C. in March is currently the most expensive (average of $290). 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.

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$514+ Cheap flights from Gimpo Intl (GMP) to Washington, D.C. (WAS)

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.

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

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

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

Cheapest flights from Gimpo Intl to Washington, D.C.Explore the most affordable flight options available from Gimpo Intl to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

Explore the most affordable flight options available from Gimpo Intl to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Gimpo Intl with our price prediction graph.

Cheapflights Insights

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

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with EVA Air, ANA, and Japan Airlines from Seoul Gimpo Intl Airport to Washington, D.C. to help guide your decision. You can also see how each airline stacks up 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 Gimpo Intl to Washington, D.C.. 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 Seoul Gimpo Intl Airport to Washington, D.C. one-way?

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

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

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

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

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

Traveling to a place near Washington, D.C.?

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Cheapest flights from Gimpo Intl to Washington, D.C.
Explore the most affordable flight options available from Gimpo Intl to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.