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Cheap flights from Washington, D.C. Reagan-National Airport to Seoul from $641

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 9/13. 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. Reagan-National Airport to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:59 am - 10:20 pm
DCA
-
GMP
26h 21m
2 stops
Multiple Airlines Logo
12:40 pm - 10:34 pm
GMP
-
DCA
22h 54m
2 stops
$1,376Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
6:00 am - 10:20 pm
DCA
-
GMP
27h 20m
3 stops
Multiple Airlines Logo
12:40 pm - 10:34 pm
GMP
-
DCA
22h 54m
2 stops
$1,386Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Japan Airlines Logo
11:35 am - 9:15 pm
DCA
-
GMP
20h 40m
2 stops
Japan Airlines Logo
12:05 pm - 11:10 pm
GMP
-
DCA
24h 05m
2 stops
$1,471Japan Airlines
Wed, Sep 2 - Thu, Sep 10
Multiple Airlines Logo
6:59 am - 10:20 pm
DCA
-
GMP
26h 21m
2 stops
Multiple Airlines Logo
7:40 am - 10:34 pm
GMP
-
DCA
27h 54m
2 stops
$1,480Multiple Airlines
Thu, Sep 3 - Thu, Sep 10
Japan Airlines Logo
10:18 am - 9:15 pm
DCA
-
GMP
21h 57m
2 stops
Japan Airlines Logo
8:00 am - 4:29 pm
GMP
-
DCA
21h 29m
2 stops
$1,518Japan Airlines
Sun, Aug 30 - Wed, Sep 2
Japan Airlines Logo
9:00 am - 9:15 pm
DCA
-
GMP
23h 15m
2 stops
Japan Airlines Logo
12:05 pm - 11:10 pm
GMP
-
DCA
24h 05m
2 stops
$1,519Japan Airlines
Sat, Aug 29 - Wed, Sep 30
Japan Airlines Logo
10:13 am - 9:15 pm
DCA
-
GMP
22h 02m
2 stops
Japan Airlines Logo
8:00 am - 11:33 pm
GMP
-
DCA
28h 33m
2 stops
$1,521Japan Airlines
Mon, Jul 27 - Fri, Aug 28
Japan Airlines Logo
11:35 am - 9:15 pm
DCA
-
GMP
20h 40m
2 stops
Japan Airlines Logo
8:00 am - 4:29 pm
GMP
-
DCA
21h 29m
2 stops
$1,530Japan Airlines
Wed, Aug 26 - Wed, Sep 2
Multiple Airlines Logo
6:23 pm - 5:55 pm
DCA
-
GMP
34h 32m
2 stops
Multiple Airlines Logo
8:00 am - 5:59 pm
GMP
-
DCA
46h 59m
2 stops
$1,544Multiple Airlines
Sun, Aug 16 - Mon, Aug 24
Japan Airlines Logo
8:40 am - 9:15 pm
DCA
-
GMP
23h 35m
2 stops
Japan Airlines Logo
12:05 pm - 8:49 pm
GMP
-
DCA
21h 44m
2 stops
$1,547Japan Airlines
Sun, Oct 11 - Sat, Oct 31

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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
Sep 2
DCA11:35 amWashington, D.C. Reagan-National
20h 40m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 10
GMP12:05 pmSeoul Gimpo Intl
24h 05m
2 stops
DCA11:10 pmWashington, D.C. Reagan-National
$1,471
Japan Airlines
Aug 30
DCA10:18 amWashington, D.C. Reagan-National
21h 57m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 2
GMP8:00 amSeoul Gimpo Intl
21h 29m
2 stops
DCA4:29 pmWashington, D.C. Reagan-National
$1,518
Japan Airlines
Aug 29
DCA9:00 amWashington, D.C. Reagan-National
23h 15m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 30
GMP12:05 pmSeoul Gimpo Intl
24h 05m
2 stops
DCA11:10 pmWashington, D.C. Reagan-National
$1,519

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 July 11, 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

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 9/2

6:59 am-10:20 pm

2 stops26h 21m

Seoul Gimpo Intl

Wed 9/9

12:40 pm-10:34 pm

2 stops22h 54m

$1,376

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 9/2

6:00 am-10:20 pm

3 stops27h 20m

Seoul Gimpo Intl

Wed 9/9

12:40 pm-10:34 pm

2 stops22h 54m

$1,386

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 9/2

11:35 am-9:15 pm

2 stops20h 40m

Seoul Gimpo Intl

Thu 9/10

12:05 pm-11:10 pm

2 stops24h 05m

$1,471

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Thu 9/3

6:59 am-10:20 pm

2 stops26h 21m

Seoul Gimpo Intl

Thu 9/10

7:40 am-10:34 pm

2 stops27h 54m

$1,480

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sun 8/30

10:18 am-9:15 pm

2 stops21h 57m

Seoul Gimpo Intl

Wed 9/2

8:00 am-4:29 pm

2 stops21h 29m

$1,518

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sat 8/29

9:00 am-9:15 pm

2 stops23h 15m

Seoul Gimpo Intl

Wed 9/30

12:05 pm-11:10 pm

2 stops24h 05m

$1,519

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 7/27

10:13 am-9:15 pm

2 stops22h 02m

Seoul Gimpo Intl

Fri 8/28

8:00 am-11:33 pm

2 stops28h 33m

$1,521
Quickest round-trip

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 8/26

11:35 am-9:15 pm

2 stops20h 40m

Seoul Gimpo Intl

Wed 9/2

8:00 am-4:29 pm

2 stops21h 29m

$1,530

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sun 8/16

6:23 pm-5:55 pm

2 stops34h 32m

Seoul Gimpo Intl

Mon 8/24

8:00 am-5:59 pm

2 stops46h 59m

$1,544

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sun 10/11

8:40 am-9:15 pm

2 stops23h 35m

Seoul Gimpo Intl

Sat 10/31

12:05 pm-8:49 pm

2 stops21h 44m

$1,547

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

20h 40m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport takes 20h 40m
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. 20h 40m 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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