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Cheap flights from Washington, D.C. Reagan-National Airport to Seoul from $613

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 9/29. 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

China Eastern Logo
6:05 am - 11:00 amDCA-GMP
38h 55m2 stops
China Eastern Logo
8:50 pm - 6:00 pmGMP-DCA
35h 10m2 stops
$1,050China Eastern
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Wed, Nov 5 - Mon, Nov 10
Logo
8:00 am - 9:50 pmDCA-GMP
24h 50m2 stops
Logo
8:00 am - 9:59 pmGMP-DCA
26h 59m2 stops
$1,495
Find Deal
Tue, Oct 21 - Mon, Oct 27
Logo
6:00 am - 10:25 pmDCA-GMP
27h 25m3 stops
Logo
7:55 am - 9:51 pmGMP-DCA
26h 56m2 stops
$1,584
Find Deal
Mon, Oct 13 - Mon, Oct 20
Logo
6:00 am - 9:55 pmDCA-GMP
26h 55m3 stops
Logo
8:20 am - 10:35 pmGMP-DCA
28h 15m3 stops
$1,644
Find Deal
Wed, Oct 29 - Wed, Nov 5
Logo
6:00 am - 10:25 pmDCA-GMP
27h 25m3 stops
Logo
8:00 am - 10:35 pmGMP-DCA
28h 35m2 stops
$1,671
Find Deal
Tue, Oct 21 - Tue, Nov 4
ANA Logo
3:30 pm - 11:20 amDCA-GMP
30h 50m2 stops
ANA Logo
7:50 pm - 11:58 amGMP-DCA
30h 08m2 stops
$1,679ANA
Find Deal
Tue, Oct 28 - Tue, Nov 4
ANA Logo
3:30 pm - 11:20 amDCA-GMP
30h 50m2 stops
ANA Logo
7:50 pm - 11:58 amGMP-DCA
30h 08m2 stops
$1,732ANA
Find Deal
Thu, Oct 30 - Thu, Nov 6
Japan Airlines Logo
6:38 am - 9:50 pmDCA-GMP
26h 12m2 stops
Japan Airlines Logo
8:00 am - 10:57 pmGMP-DCA
27h 57m2 stops
$1,786Japan Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 28
Japan Airlines Logo
6:10 am - 10:05 pmDCA-GMP
25h 55m2 stops
Japan Airlines Logo
8:00 am - 9:30 pmGMP-DCA
27h 30m2 stops
$1,831Japan Airlines
Find Deal
Mon, Nov 3 - Wed, Nov 19
Japan Airlines Logo
6:38 am - 10:05 pmDCA-GMP
26h 27m2 stops
Japan Airlines Logo
8:00 am - 4:54 pmGMP-DCA
22h 54m2 stops
$1,851Japan Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10

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 17
DCA6:38 amWashington, D.C. Reagan-National
26h 12m
2 stops
GMP9:50 pmSeoul Gimpo Intl
Oct 28
GMP8:00 amSeoul Gimpo Intl
27h 57m
2 stops
DCA10:57 pmWashington, D.C. Reagan-National
$1,786
Find similar
Japan Airlines
Nov 3
DCA6:10 amWashington, D.C. Reagan-National
25h 55m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Nov 19
GMP8:00 amSeoul Gimpo Intl
27h 30m
2 stops
DCA9:30 pmWashington, D.C. Reagan-National
$1,831
Find similar
Japan Airlines
Oct 27
DCA6:38 amWashington, D.C. Reagan-National
26h 27m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Nov 10
GMP8:00 amSeoul Gimpo Intl
22h 54m
2 stops
DCA4:54 pmWashington, D.C. Reagan-National
$1,851
Find similar

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

Our best ANA deals on Washington, D.C. Reagan-National Airport to Seoul Gimpo Intl Airport flight tickets
ANA
Oct 28
DCA3:30 pmWashington, D.C. Reagan-National
30h 50m
2 stops
GMP11:20 amSeoul Gimpo Intl
Nov 4
GMP7:50 pmSeoul Gimpo Intl
30h 08m
2 stops
DCA11:58 amWashington, D.C. Reagan-National
$1,679
Find similar
ANA
Oct 30
DCA3:30 pmWashington, D.C. Reagan-National
30h 50m
2 stops
GMP11:20 amSeoul Gimpo Intl
Nov 6
GMP7:50 pmSeoul Gimpo Intl
30h 08m
2 stops
DCA11:58 amWashington, D.C. Reagan-National
$1,732
Find similar
ANA
Oct 23
DCA8:30 amWashington, D.C. Reagan-National
24h 50m
2 stops
GMP10:20 pmSeoul Gimpo Intl
Nov 2
GMP7:50 pmSeoul Gimpo Intl
37h 17m
2 stops
DCA7:07 pmWashington, D.C. Reagan-National
$1,941
Find similar

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 September 15, 2025.
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

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 11/5

6:05 am-11:00 am

2 stops38h 55m

Seoul Gimpo Intl

Mon 11/10

8:50 pm-6:00 pm

2 stops35h 10m

$1,050

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 10/21

8:00 am-9:50 pm

2 stops24h 50m

Seoul Gimpo Intl

Mon 10/27

8:00 am-9:59 pm

2 stops26h 59m

$1,495

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 10/13

6:00 am-10:25 pm

3 stops27h 25m

Seoul Gimpo Intl

Mon 10/20

7:55 am-9:51 pm

2 stops26h 56m

$1,584

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 10/29

6:00 am-9:55 pm

3 stops26h 55m

Seoul Gimpo Intl

Wed 11/5

8:20 am-10:35 pm

3 stops28h 15m

$1,644

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 10/21

6:00 am-10:25 pm

3 stops27h 25m

Seoul Gimpo Intl

Tue 11/4

8:00 am-10:35 pm

2 stops28h 35m

$1,671

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 10/28

3:30 pm-11:20 am

2 stops30h 50m

Seoul Gimpo Intl

Tue 11/4

7:50 pm-11:58 am

2 stops30h 08m

$1,679

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Thu 10/30

3:30 pm-11:20 am

2 stops30h 50m

Seoul Gimpo Intl

Thu 11/6

7:50 pm-11:58 am

2 stops30h 08m

$1,732

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Fri 10/17

6:38 am-9:50 pm

2 stops26h 12m

Seoul Gimpo Intl

Tue 10/28

8:00 am-10:57 pm

2 stops27h 57m

$1,786

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 11/3

6:10 am-10:05 pm

2 stops25h 55m

Seoul Gimpo Intl

Wed 11/19

8:00 am-9:30 pm

2 stops27h 30m

$1,831

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 10/27

6:38 am-10:05 pm

2 stops26h 27m

Seoul Gimpo Intl

Mon 11/10

8:00 am-4:54 pm

2 stops22h 54m

$1,851

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 day to depart on your flight to Seoul Gimpo Intl Airport?

On average, the least expensive day to fly to Seoul Gimpo Intl Airport from Washington, D.C. Reagan-National Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $1,678. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Seoul Gimpo Intl Airport is Friday, with ticket prices averaging around $1,916.

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

Direct flights

None
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.
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  • 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. 22h 10m 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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