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Cheap flights from Washington, D.C. to Seoul from $554

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Seoul departing on 4/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Japan Airlines Logo
9:32 am - 9:15 pm
DCA
-
GMP
22h 43m
2 stops
Japan Airlines Logo
7:15 pm - 11:13 pm
GMP
-
DCA
40h 58m
2 stops
$1,267Japan Airlines
Mon, Apr 27 - Wed, May 20
Japan Airlines Logo
6:58 am - 9:15 pm
DCA
-
GMP
25h 17m
2 stops
Japan Airlines Logo
8:00 am - 6:58 pm
GMP
-
DCA
23h 58m
2 stops
$1,296Japan Airlines
Tue, Apr 28 - Tue, May 19
Japan Airlines Logo
6:00 am - 9:15 pm
DCA
-
GMP
26h 15m
2 stops
Japan Airlines Logo
8:00 am - 10:19 pm
GMP
-
DCA
27h 19m
2 stops
$1,302Japan Airlines
Tue, Apr 14 - Wed, Jun 3
Japan Airlines Logo
5:31 pm - 10:40 am
DCA
-
GMP
28h 09m
2 stops
Japan Airlines Logo
8:00 am - 4:45 pm
GMP
-
DCA
21h 45m
2 stops
$1,315Japan Airlines
Tue, Apr 7 - Wed, Apr 22
Japan Airlines Logo
6:58 am - 9:15 pm
DCA
-
GMP
25h 17m
2 stops
Japan Airlines Logo
7:15 pm - 6:58 pm
GMP
-
DCA
36h 43m
2 stops
$1,326Japan Airlines
Thu, Apr 9 - Wed, Apr 15
Japan Airlines Logo
6:58 am - 9:15 pm
DCA
-
GMP
25h 17m
2 stops
Japan Airlines Logo
12:05 pm - 8:00 am
GMP
-
DCA
32h 55m
2 stops
$1,330Japan Airlines
Tue, Apr 14 - Fri, May 22
Japan Airlines Logo
11:36 am - 9:15 pm
DCA
-
GMP
20h 39m
2 stops
Japan Airlines Logo
12:05 pm - 6:58 pm
GMP
-
DCA
43h 53m
2 stops
$1,331Japan Airlines
Thu, Apr 9 - Tue, Apr 21
Multiple Airlines Logo
11:47 am - 9:15 pm
BWI
-
GMP
20h 28m
2 stops
Multiple Airlines Logo
8:00 am - 5:56 pm
GMP
-
BWI
22h 56m
2 stops
$1,513Multiple Airlines
Tue, Sep 1 - Thu, Sep 10
ANA Logo
12:15 pm - 10:20 pm
IAD
-
GMP
21h 05m
1 stop
ANA Logo
7:55 pm - 10:05 am
GMP
-
IAD
27h 10m
1 stop
$1,739ANA
Mon, Apr 27 - Wed, May 20
ANA Logo
12:15 pm - 10:20 pm
IAD
-
GMP
21h 05m
1 stop
ANA Logo
7:55 pm - 10:05 am
GMP
-
IAD
27h 10m
1 stop
$1,782ANA
Tue, Apr 28 - Tue, May 5

Japan Airlines flights from Washington, D.C. to Seoul Gimpo Intl Airport

Our best Japan Airlines deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Aug 27
DCA6:59 amWashington, D.C. Reagan-National
25h 16m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 8
GMP12:05 pmSeoul Gimpo Intl
32h 53m
2 stops
DCA7:58 amWashington, D.C. Reagan-National
$1,226
Japan Airlines
Aug 29
DCA7:17 pmWashington, D.C. Reagan-National
33h 38m
2 stops
GMP5:55 pmSeoul Gimpo Intl
Sep 30
GMP12:05 pmSeoul Gimpo Intl
23h 57m
2 stops
DCA11:02 pmWashington, D.C. Reagan-National
$1,249
Japan Airlines
Sep 1
DCA8:20 amWashington, D.C. Reagan-National
23h 55m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 10
GMP12:05 pmSeoul Gimpo Intl
32h 53m
2 stops
DCA7:58 amWashington, D.C. Reagan-National
$1,259

ANA flights from Washington, D.C. to Seoul Gimpo Intl Airport

Our best ANA deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
ANA
Apr 27
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
May 20
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,739
ANA
Apr 28
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
May 5
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,782
ANA
Apr 28
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Jun 1
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,829

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Seoul Gimpo Intl Airport 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, momondo users made 832,500 searches. Data last updated March 24, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 4/27

9:32 am-9:15 pm

2 stops22h 43m

Seoul Gimpo Intl

Wed 5/20

7:15 pm-11:13 pm

2 stops40h 58m

$1,267

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 4/28

6:58 am-9:15 pm

2 stops25h 17m

Seoul Gimpo Intl

Tue 5/19

8:00 am-6:58 pm

2 stops23h 58m

$1,296

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 4/14

6:00 am-9:15 pm

2 stops26h 15m

Seoul Gimpo Intl

Wed 6/3

8:00 am-10:19 pm

2 stops27h 19m

$1,302

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 4/7

5:31 pm-10:40 am

2 stops28h 09m

Seoul Gimpo Intl

Wed 4/22

8:00 am-4:45 pm

2 stops21h 45m

$1,315

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Thu 4/9

6:58 am-9:15 pm

2 stops25h 17m

Seoul Gimpo Intl

Wed 4/15

7:15 pm-6:58 pm

2 stops36h 43m

$1,326

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 4/14

6:58 am-9:15 pm

2 stops25h 17m

Seoul Gimpo Intl

Fri 5/22

12:05 pm-8:00 am

2 stops32h 55m

$1,330

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Thu 4/9

11:36 am-9:15 pm

2 stops20h 39m

Seoul Gimpo Intl

Tue 4/21

12:05 pm-6:58 pm

2 stops43h 53m

$1,331
Quickest round-trip

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Tue 9/1

11:47 am-9:15 pm

2 stops20h 28m

Seoul Gimpo Intl

Thu 9/10

8:00 am-5:56 pm

2 stops22h 56m

$1,513

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 4/27

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Wed 5/20

7:55 pm-10:05 am

1 stop27h 10m

$1,739

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 4/28

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Tue 5/5

7:55 pm-10:05 am

1 stop27h 10m

$1,782

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Washington, D.C. to Seoul Gimpo Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Washington, D.C. to Seoul Gimpo Intl?

Japan Airlines is the most popular carrier operating from Washington, D.C. to Seoul Gimpo Intl

When to book flights from Washington, D.C. to Seoul Gimpo Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Seoul Gimpo Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Seoul Gimpo Intl Airport (WAS to GMP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Seoul Gimpo Intl Airport

Fastest flight time

20h 28m

Direct flights

None
The fastest flight from Washington, D.C. to Seoul Gimpo Intl Airport takes 20h 28m
There are no direct flights from Washington, D.C. to Seoul Gimpo Intl Airport. There are no popular flight routes from Washington, D.C. to Seoul Gimpo Intl Airport.
Search flight deals

  • How far is Washington, D.C. to Seoul Gimpo Intl by plane?

    Seoul Gimpo Intl is 6935.3 mi away from Washington, D.C.. Typically, this will take 20h 28m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. to Seoul Gimpo Intl Airport?

    Prices for flights from Washington, D.C. to Seoul Gimpo Intl Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. to Seoul Gimpo Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Seoul Gimpo Intl Airport.

  • What documentation or ID do you need to fly to Seoul Gimpo Intl Airport?

    The required travel and health documents for your Seoul Gimpo Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul Gimpo Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Seoul?

It is quick and easy to find Washington, D.C. to Seoul flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seoul that suits you.

Can I find flights from Washington, D.C. to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Seoul?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Seoul.

I’m not ready to book a flight from Washington, D.C. to Seoul right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.

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