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Cheap flights from Washington, D.C. to Seoul from $637

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 9/14. 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

Find the cheapest flights from Washington, D.C. to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
EVA Air Logo
1:50 am - 7:15 pm
IAD
-
GMP
28h 25m
1 stop
EVA Air Logo
1:50 pm - 10:00 pm
GMP
-
IAD
21h 10m
1 stop
$1,181EVA Air
Mon, Aug 31 - Fri, Sep 18
EVA Air Logo
1:50 am - 7:15 pm
IAD
-
GMP
28h 25m
1 stop
EVA Air Logo
1:50 pm - 10:00 pm
GMP
-
IAD
21h 10m
1 stop
$1,184EVA Air
Mon, Aug 17 - Fri, Sep 11
EVA Air Logo
1:15 am - 7:15 pm
IAD
-
GMP
29h 00m
1 stop
EVA Air Logo
1:50 pm - 10:00 pm
GMP
-
IAD
21h 10m
1 stop
$1,231EVA Air
Mon, Sep 28 - Fri, Oct 9
Multiple Airlines Logo
6:59 am - 9:15 pm
DCA
-
GMP
25h 16m
2 stops
Multiple Airlines Logo
7:40 am - 10:31 pm
GMP
-
DCA
27h 51m
2 stops
$1,233Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
6:00 am - 9:15 pm
DCA
-
GMP
26h 15m
3 stops
Multiple Airlines Logo
7:40 am - 10:31 pm
GMP
-
DCA
27h 51m
2 stops
$1,242Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
1:50 am - 7:15 pm
IAD
-
GMP
28h 25m
1 stop
Multiple Airlines Logo
1:50 pm - 5:40 am
GMP
-
IAD
28h 50m
2 stops
$1,274Multiple Airlines
Mon, Aug 31 - Sat, Sep 19
EVA Air Logo
1:15 am - 7:15 pm
IAD
-
GMP
29h 00m
1 stop
EVA Air Logo
7:15 pm - 10:00 pm
GMP
-
IAD
39h 45m
1 stop
$1,276EVA Air
Mon, Sep 28 - Tue, Oct 6
Japan Airlines Logo
6:00 am - 5:55 pm
DCA
-
GMP
22h 55m
2 stops
Japan Airlines Logo
8:00 am - 4:29 pm
GMP
-
DCA
21h 29m
2 stops
$1,417Japan Airlines
Mon, Aug 17 - Mon, Aug 24
Japan Airlines Logo
6:00 am - 5:55 pm
DCA
-
GMP
22h 55m
2 stops
Japan Airlines Logo
12:05 pm - 11:10 pm
GMP
-
DCA
24h 05m
2 stops
$1,433Japan Airlines
Tue, Sep 1 - Wed, Sep 30
Japan Airlines Logo
6:00 am - 9:15 pm
DCA
-
GMP
26h 15m
2 stops
Japan Airlines Logo
8:00 am - 10:43 pm
GMP
-
DCA
27h 43m
2 stops
$1,434Japan Airlines
Mon, Aug 10 - Sat, Aug 22

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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
Sep 1
DCA6:00 amWashington, D.C. Reagan-National
22h 55m
2 stops
GMP5:55 pmSeoul Gimpo Intl
Sep 30
GMP12:05 pmSeoul Gimpo Intl
24h 05m
2 stops
DCA11:10 pmWashington, D.C. Reagan-National
$1,433
Japan Airlines
Aug 17
DCA6:00 amWashington, D.C. Reagan-National
22h 55m
2 stops
GMP5:55 pmSeoul Gimpo Intl
Aug 24
GMP8:00 amSeoul Gimpo Intl
21h 29m
2 stops
DCA4:29 pmWashington, D.C. Reagan-National
$1,441
Japan Airlines
Aug 29
DCA6:00 amWashington, D.C. Reagan-National
22h 55m
2 stops
GMP5:55 pmSeoul Gimpo Intl
Sep 30
GMP7:15 pmSeoul Gimpo Intl
34h 09m
2 stops
DCA4:24 pmWashington, D.C. Reagan-National
$1,442

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

Our best EVA Air deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
EVA Air
Aug 31
IAD1:50 amWashington, D.C. Dulles Intl
28h 25m
1 stop
GMP7:15 pmSeoul Gimpo Intl
Sep 19
GMP1:50 pmSeoul Gimpo Intl
21h 10m
1 stop
IAD10:00 pmWashington, D.C. Dulles Intl
$1,181
EVA Air
Aug 17
IAD1:50 amWashington, D.C. Dulles Intl
28h 25m
1 stop
GMP7:15 pmSeoul Gimpo Intl
Sep 11
GMP1:50 pmSeoul Gimpo Intl
21h 10m
1 stop
IAD10:00 pmWashington, D.C. Dulles Intl
$1,184
EVA Air
Sep 28
IAD1:15 amWashington, D.C. Dulles Intl
29h 00m
1 stop
GMP7:15 pmSeoul Gimpo Intl
Oct 9
GMP1:50 pmSeoul Gimpo Intl
21h 10m
1 stop
IAD10:00 pmWashington, D.C. Dulles Intl
$1,231

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 June 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

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 8/31

1:50 am-7:15 pm

1 stop28h 25m

Seoul Gimpo Intl

Fri 9/18

1:50 pm-10:00 pm

1 stop21h 10m

$1,181

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 8/17

1:50 am-7:15 pm

1 stop28h 25m

Seoul Gimpo Intl

Fri 9/11

1:50 pm-10:00 pm

1 stop21h 10m

$1,184

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 9/28

1:15 am-7:15 pm

1 stop29h 00m

Seoul Gimpo Intl

Fri 10/9

1:50 pm-10:00 pm

1 stop21h 10m

$1,231

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 8/4

6:59 am-9:15 pm

2 stops25h 16m

Seoul Gimpo Intl

Tue 8/11

7:40 am-10:31 pm

2 stops27h 51m

$1,233

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 8/4

6:00 am-9:15 pm

3 stops26h 15m

Seoul Gimpo Intl

Tue 8/11

7:40 am-10:31 pm

2 stops27h 51m

$1,242

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 8/31

1:50 am-7:15 pm

1 stop28h 25m

Seoul Gimpo Intl

Sat 9/19

1:50 pm-5:40 am

2 stops28h 50m

$1,274

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 9/28

1:15 am-7:15 pm

1 stop29h 00m

Seoul Gimpo Intl

Tue 10/6

7:15 pm-10:00 pm

1 stop39h 45m

$1,276
Quickest round-trip

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 8/17

6:00 am-5:55 pm

2 stops22h 55m

Seoul Gimpo Intl

Mon 8/24

8:00 am-4:29 pm

2 stops21h 29m

$1,417

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 9/1

6:00 am-5:55 pm

2 stops22h 55m

Seoul Gimpo Intl

Wed 9/30

12:05 pm-11:10 pm

2 stops24h 05m

$1,433

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 8/10

6:00 am-9:15 pm

2 stops26h 15m

Seoul Gimpo Intl

Sat 8/22

8:00 am-10:43 pm

2 stops27h 43m

$1,434

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

Can stopping save me money on Washington, D.C. to Seoul Gimpo Intl Airport flights?

You could potentially save up to 48% on your flight if you consider stops on a Washington, D.C. to Seoul Gimpo Intl Airport flight.

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 52m

Direct flights

None
The fastest flight from Washington, D.C. to Seoul Gimpo Intl Airport takes 20h 52m
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

Frequently asked questions about flying from Washington, D.C. to Seoul Gimpo Intl Airport

  • 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 52m 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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