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Cheap flights from Washington, D.C. Reagan-National Airport to Seoul from $740

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. Reagan-National Airport to Seoul departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Japan Airlines Logo
7:45 am - 9:15 pm
DCA
-
GMP
24h 30m
2 stops
Japan Airlines Logo
12:05 pm - 10:57 pm
GMP
-
DCA
23h 52m
2 stops
$1,407Japan Airlines
Tue, Oct 6 - Mon, Oct 26
Japan Airlines Logo
8:34 am - 9:15 pm
DCA
-
GMP
23h 41m
2 stops
Japan Airlines Logo
8:00 am - 11:02 pm
GMP
-
DCA
28h 02m
2 stops
$1,412Japan Airlines
Wed, Aug 26 - Mon, Sep 14
Japan Airlines Logo
6:30 am - 9:15 pm
DCA
-
GMP
25h 45m
2 stops
Japan Airlines Logo
12:05 pm - 10:57 pm
GMP
-
DCA
23h 52m
2 stops
$1,413Japan Airlines
Mon, Sep 14 - Mon, Oct 5
Japan Airlines Logo
6:23 pm - 10:40 am
DCA
-
GMP
27h 17m
2 stops
Japan Airlines Logo
8:00 am - 11:02 pm
GMP
-
DCA
28h 02m
2 stops
$1,423Japan Airlines
Sat, Aug 29 - Wed, Sep 30
Japan Airlines Logo
6:23 pm - 10:40 am
DCA
-
GMP
27h 17m
2 stops
Japan Airlines Logo
12:05 pm - 11:02 pm
GMP
-
DCA
23h 57m
2 stops
$1,425Japan Airlines
Sun, Sep 6 - Mon, Sep 14
Japan Airlines Logo
7:22 pm - 5:55 pm
DCA
-
GMP
33h 33m
2 stops
Japan Airlines Logo
12:05 pm - 10:57 pm
GMP
-
DCA
23h 52m
2 stops
$1,428Japan Airlines
Wed, Sep 9 - Wed, Oct 28
Japan Airlines Logo
5:45 pm - 10:05 pm
DCA
-
GMP
38h 20m
2 stops
Japan Airlines Logo
8:00 am - 9:29 pm
GMP
-
DCA
27h 29m
2 stops
$1,449Japan Airlines
Sun, Nov 1 - Fri, Nov 13
Japan Airlines Logo
7:06 pm - 5:55 pm
DCA
-
GMP
33h 49m
2 stops
Japan Airlines Logo
12:05 pm - 10:57 pm
GMP
-
DCA
23h 52m
2 stops
$1,454Japan Airlines
Tue, Oct 13 - Tue, Oct 20
Japan Airlines Logo
5:45 pm - 10:55 am
DCA
-
GMP
27h 10m
2 stops
Japan Airlines Logo
12:05 pm - 10:29 pm
GMP
-
DCA
24h 24m
2 stops
$1,459Japan Airlines
Tue, Nov 3 - Sat, Nov 14
Japan Airlines Logo
11:34 am - 9:15 pm
DCA
-
GMP
20h 41m
2 stops
Japan Airlines Logo
12:05 pm - 7:58 am
GMP
-
DCA
32h 53m
2 stops
$1,465Japan Airlines
Wed, Aug 26 - Mon, Sep 14

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

Our best Japan Airlines deals on Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Oct 6
DCA7:45 amWashington, D.C. Reagan-National
24h 30m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Oct 26
GMP12:05 pmSeoul Gimpo Intl
23h 52m
2 stops
DCA10:57 pmWashington, D.C. Reagan-National
$1,407
Japan Airlines
Aug 26
DCA8:34 amWashington, D.C. Reagan-National
23h 41m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 14
GMP8:00 amSeoul Gimpo Intl
28h 02m
2 stops
DCA11:02 pmWashington, D.C. Reagan-National
$1,412
Japan Airlines
Sep 14
DCA6:30 amWashington, D.C. Reagan-National
25h 45m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Oct 5
GMP12:05 pmSeoul Gimpo Intl
23h 52m
2 stops
DCA10:57 pmWashington, D.C. Reagan-National
$1,413

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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 May 14, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 10/6

7:45 am-9:15 pm

2 stops24h 30m

Seoul Gimpo Intl

Mon 10/26

12:05 pm-10:57 pm

2 stops23h 52m

$1,407

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 8/26

8:34 am-9:15 pm

2 stops23h 41m

Seoul Gimpo Intl

Mon 9/14

8:00 am-11:02 pm

2 stops28h 02m

$1,412

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 9/14

6:30 am-9:15 pm

2 stops25h 45m

Seoul Gimpo Intl

Mon 10/5

12:05 pm-10:57 pm

2 stops23h 52m

$1,413

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sat 8/29

6:23 pm-10:40 am

2 stops27h 17m

Seoul Gimpo Intl

Wed 9/30

8:00 am-11:02 pm

2 stops28h 02m

$1,423

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sun 9/6

6:23 pm-10:40 am

2 stops27h 17m

Seoul Gimpo Intl

Mon 9/14

12:05 pm-11:02 pm

2 stops23h 57m

$1,425

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 9/9

7:22 pm-5:55 pm

2 stops33h 33m

Seoul Gimpo Intl

Wed 10/28

12:05 pm-10:57 pm

2 stops23h 52m

$1,428

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sun 11/1

5:45 pm-10:05 pm

2 stops38h 20m

Seoul Gimpo Intl

Fri 11/13

8:00 am-9:29 pm

2 stops27h 29m

$1,449

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 10/13

7:06 pm-5:55 pm

2 stops33h 49m

Seoul Gimpo Intl

Tue 10/20

12:05 pm-10:57 pm

2 stops23h 52m

$1,454

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 11/3

5:45 pm-10:55 am

2 stops27h 10m

Seoul Gimpo Intl

Sat 11/14

12:05 pm-10:29 pm

2 stops24h 24m

$1,459

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 8/26

11:34 am-9:15 pm

2 stops20h 41m

Seoul Gimpo Intl

Mon 9/14

12:05 pm-7:58 am

2 stops32h 53m

$1,465

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. Reagan-National Airport 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. Reagan-National to Seoul Gimpo Intl?

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

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport to Seoul Gimpo Intl Airport (DCA to GMP) flight deals and tips

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

Fastest flight time

24h 30m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport takes 24h 30m
There are no direct flights from Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport.
Search flight deals

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

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

    The straight-line distance from Washington, D.C. Reagan-National to Seoul Gimpo Intl is 6938.8 mi. 24h 30m is a normal flight duration for this route.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport are updated daily.

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport 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?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Seoul for you.

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

Flights from Washington, D.C. to Seoul with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Washington, D.C. and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Seoul from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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