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Cheap flights from Washington, D.C. to Seoul from $525

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 8/28. 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
1:15 am - 7:15 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
29h 00m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
1:50 pm - 10:00 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
21h 10m1 stop Taipei City Sung Shan
$1,049EVA Air
Mon, Sep 14 - Fri, Sep 25
EVA Air Logo
1:15 am - 7:15 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
29h 00m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
1:50 pm - 10:00 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
21h 10m1 stop Taipei City Sung Shan
$1,049EVA Air
Mon, Sep 28 - Sat, Oct 10
EVA Air Logo
1:50 am - 7:15 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
28h 25m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
1:50 pm - 10:00 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
21h 10m1 stop Taipei City Sung Shan
$1,190EVA Air
Mon, Aug 31 - Fri, Sep 4
EVA Air Logo
11:55 pm - 7:15 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
29h 20m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
7:00 pm - 8:55 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
39h 55m1 stop Taipei City Sung Shan
$1,196EVA Air
Mon, Nov 23 - Tue, Dec 15
EVA Air Logo
11:55 pm - 7:15 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
29h 20m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
7:00 pm - 8:55 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
39h 55m1 stop Taipei City Sung Shan
$1,196EVA Air
Mon, Jan 25 - Tue, Feb 2
EVA Air Logo
11:55 pm - 7:15 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
29h 20m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
7:00 pm - 8:55 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
39h 55m1 stop Taipei City Sung Shan
$1,197EVA Air
Mon, Nov 2 - Tue, Nov 17
EVA Air Logo
1:15 am - 7:15 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
29h 00m1 stop Taipei City Taiwan Taoyuan Intl
EVA Air Logo
7:00 pm - 8:55 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
39h 55m1 stop Taipei City Sung Shan
$1,197EVA Air
Mon, Oct 19 - Tue, Nov 10
Multiple Airlines Logo
9:00 pm - 10:25 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
36h 25m2 stops Doha Hamad Intl Osaka Kansai Intl
Multiple Airlines Logo
7:50 pm - 3:40 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
32h 50m2 stops Tokyo Haneda Doha Hamad Intl
$1,233Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
8:28 am - 1:10 pmIAD  Washington, D.C. Dulles Intl-GMP Seoul Gimpo Intl
39h 42m2 stops Toronto Pearson Intl Osaka Kansai Intl
Multiple Airlines Logo
5:40 pm - 3:25 pmGMP  Seoul Gimpo Intl-IAD Washington, D.C. Dulles Intl
58h 45m2 stops Osaka Kansai Intl Toronto Pearson Intl
$1,244Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
6:59 pm - 7:15 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
58h 16m2 stops San Francisco Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
7:00 pm - 5:59 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
36h 59m2 stops Taipei City Sung Shan San Francisco
$1,265Multiple Airlines
Sun, Nov 22 - Tue, Dec 15

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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
Aug 17
DCA6:00 amWashington, D.C. Reagan-National
26h 15m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Aug 31
GMP8:00 amSeoul Gimpo Intl
21h 29m
2 stops
DCA4:29 pmWashington, D.C. Reagan-National
$1,447
Japan Airlines
Aug 13
DCA6:00 amWashington, D.C. Reagan-National
22h 55m
2 stops
GMP5:55 pmSeoul Gimpo Intl
Aug 25
GMP8:00 amSeoul Gimpo Intl
21h 29m
2 stops
DCA4:29 pmWashington, D.C. Reagan-National
$1,448
Japan Airlines
Sep 2
DCA11:35 amWashington, D.C. Reagan-National
20h 40m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 9
GMP8:00 amSeoul Gimpo Intl
21h 24m
2 stops
DCA4:24 pmWashington, D.C. Reagan-National
$1,453

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
Aug 17
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Aug 31
GMP7:40 amSeoul Gimpo Intl
21h 10m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$2,118
ANA
Aug 17
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Aug 24
GMP7:55 pmSeoul Gimpo Intl
31h 00m
2 stops
IAD1:55 pmWashington, D.C. Dulles Intl
$2,127
ANA
Aug 18
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Aug 31
GMP7:40 amSeoul Gimpo Intl
21h 10m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$2,154

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 August 7, 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 Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 9/14

1:15 am-7:15 pm

1 stop29h 00m

Seoul Gimpo Intl

Fri 9/25

1:50 pm-10:00 pm

1 stop21h 10m

$1,049

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 9/28

1:15 am-7:15 pm

1 stop29h 00m

Seoul Gimpo Intl

Sat 10/10

1:50 pm-10:00 pm

1 stop21h 10m

$1,049
Quickest round-trip

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 8/31

1:50 am-7:15 pm

1 stop28h 25m

Seoul Gimpo Intl

Fri 9/4

1:50 pm-10:00 pm

1 stop21h 10m

$1,190

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 11/23

11:55 pm-7:15 pm

1 stop29h 20m

Seoul Gimpo Intl

Tue 12/15

7:00 pm-8:55 pm

1 stop39h 55m

$1,196

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 1/25

11:55 pm-7:15 pm

1 stop29h 20m

Seoul Gimpo Intl

Tue 2/2

7:00 pm-8:55 pm

1 stop39h 55m

$1,196

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 11/2

11:55 pm-7:15 pm

1 stop29h 20m

Seoul Gimpo Intl

Tue 11/17

7:00 pm-8:55 pm

1 stop39h 55m

$1,197

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 10/19

1:15 am-7:15 pm

1 stop29h 00m

Seoul Gimpo Intl

Tue 11/10

7:00 pm-8:55 pm

1 stop39h 55m

$1,197

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Wed 9/2

9:00 pm-10:25 pm

2 stops36h 25m

Seoul Gimpo Intl

Wed 9/9

7:50 pm-3:40 pm

2 stops32h 50m

$1,233

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Tue 9/29

8:28 am-1:10 pm

2 stops39h 42m

Seoul Gimpo Intl

Tue 10/6

5:40 pm-3:25 pm

2 stops58h 45m

$1,244

Washington, D.C.Seoul

DCA Washington, D.C. Reagan-National - GMP Seoul Gimpo Intl

DCAGMP

Washington, D.C. Reagan-National

Sun 11/22

6:59 pm-7:15 pm

2 stops58h 16m

Seoul Gimpo Intl

Tue 12/15

7:00 pm-5:59 pm

2 stops36h 59m

$1,265

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 21m

Direct flights

None
The fastest flight from Washington, D.C. to Seoul Gimpo Intl Airport takes 20h 21m
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.
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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 21m 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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