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Cheap flights from Seoul Gimpo Intl Airport to Washington, D.C. 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 Seoul Gimpo Intl Airport to Washington, D.C. departing on 9/30. 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 Seoul Gimpo Intl Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:00 am - 4:29 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
21h 29m2 stops Tokyo Haneda Los Angeles
Multiple Airlines Logo
6:00 am - 5:55 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
22h 55m2 stops New York John F Kennedy Intl Tokyo Haneda
$1,075Multiple Airlines
Wed, Sep 16 - Tue, Sep 22
Japan Airlines Logo
8:00 am - 11:10 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
28h 10m2 stops Tokyo Haneda New York John F Kennedy Intl
Japan Airlines Logo
11:31 am - 9:15 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
44h 44m2 stops Chicago O'Hare Intl Tokyo Narita
$1,132Japan Airlines
Thu, Sep 17 - Mon, Sep 21
Japan Airlines Logo
8:00 am - 11:10 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
28h 10m2 stops Tokyo Haneda New York John F Kennedy Intl
Japan Airlines Logo
11:31 am - 9:15 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
20h 44m2 stops Chicago O'Hare Intl Tokyo Haneda
$1,166Japan Airlines
Mon, Sep 14 - Tue, Sep 22
Japan Airlines Logo
8:00 am - 11:10 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
28h 10m2 stops Tokyo Haneda New York John F Kennedy Intl
Japan Airlines Logo
7:42 am - 9:15 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
24h 33m2 stops Chicago O'Hare Intl Tokyo Haneda
$1,175Japan Airlines
Mon, Sep 14 - Tue, Sep 22
Japan Airlines Logo
8:00 am - 4:29 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
21h 29m2 stops Tokyo Haneda Los Angeles
Japan Airlines Logo
6:00 am - 9:15 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
26h 15m2 stops New York John F Kennedy Intl Tokyo Haneda
$1,189Japan Airlines
Wed, Sep 16 - Mon, Sep 21
Japan Airlines Logo
8:00 am - 11:10 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
28h 10m2 stops Tokyo Haneda New York John F Kennedy Intl
Japan Airlines Logo
8:40 am - 9:15 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
23h 35m2 stops Los Angeles Tokyo Haneda
$1,253Japan Airlines
Thu, Sep 10 - Thu, Sep 17
Multiple Airlines Logo
12:05 pm - 10:58 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
23h 53m2 stops Tokyo Haneda Dallas/Fort Worth
Multiple Airlines Logo
5:00 am - 5:55 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
23h 55m2 stops Dallas/Fort Worth Tokyo Haneda
$1,331Multiple Airlines
Sat, Sep 12 - Tue, Sep 29
Multiple Airlines Logo
1:50 pm - 5:59 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
42h 09m2 stops Taipei City Sung Shan San Francisco
Multiple Airlines Logo
6:59 pm - 12:50 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
51h 51m2 stops San Francisco Taipei City Taiwan Taoyuan Intl
$1,403Multiple Airlines
Sat, Nov 14 - Tue, Nov 17
Japan Airlines Logo
8:00 am - 8:19 amGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
38h 19m2 stops Tokyo Haneda New York John F Kennedy Intl
Japan Airlines Logo
5:12 pm - 10:55 amDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
27h 43m2 stops New York John F Kennedy Intl Tokyo Haneda
$1,425Japan Airlines
Fri, Nov 20 - Sun, Nov 22
Japan Airlines Logo
7:40 pm - 7:19 pmGMP  Seoul Gimpo Intl-DCA Washington, D.C. Reagan-National
61h 39m2 stops Tokyo Haneda New York John F Kennedy Intl
Japan Airlines Logo
6:00 am - 6:20 pmDCA  Washington, D.C. Reagan-National-GMP Seoul Gimpo Intl
46h 20m2 stops New York John F Kennedy Intl Tokyo Haneda
$1,426Japan Airlines
Wed, Nov 4 - Sun, Nov 8

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

Our best Japan Airlines deals on Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport flight tickets
Japan Airlines
Sep 17
GMP8:00 amSeoul Gimpo Intl
28h 10m
2 stops
DCA11:10 pmWashington, D.C. Reagan-National
Sep 21
DCA11:31 amWashington, D.C. Reagan-National
44h 44m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,132
Japan Airlines
Sep 14
GMP8:00 amSeoul Gimpo Intl
28h 10m
2 stops
DCA11:10 pmWashington, D.C. Reagan-National
Sep 22
DCA11:31 amWashington, D.C. Reagan-National
20h 44m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,166
Japan Airlines
Sep 14
GMP8:00 amSeoul Gimpo Intl
28h 10m
2 stops
DCA11:10 pmWashington, D.C. Reagan-National
Sep 22
DCA7:42 amWashington, D.C. Reagan-National
24h 33m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,175

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

Our best ANA deals on Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport flight tickets
ANA
Sep 7
GMP7:40 amSeoul Gimpo Intl
25h 29m
2 stops
DCA8:09 pmWashington, D.C. Reagan-National
Sep 21
DCA9:30 amWashington, D.C. Reagan-National
23h 50m
2 stops
GMP10:20 pmSeoul Gimpo Intl
$1,684
ANA
Dec 19
GMP7:50 pmSeoul Gimpo Intl
31h 26m
2 stops
DCA1:16 pmWashington, D.C. Reagan-National
Jan 16
DCA8:30 amWashington, D.C. Reagan-National
36h 50m
2 stops
GMP11:20 amSeoul Gimpo Intl
$4,634
ANA
Dec 23
GMP7:50 pmSeoul Gimpo Intl
37h 23m
2 stops
DCA7:13 pmWashington, D.C. Reagan-National
Dec 30
DCA2:00 pmWashington, D.C. Reagan-National
31h 20m
2 stops
GMP11:20 amSeoul Gimpo Intl
$4,693

momondo Fare Finder

 
Customize your flight search to find flights from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National 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 15, 2026.
Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Wed 9/16

8:00 am-4:29 pm

2 stops21h 29m

Washington, D.C. Reagan-National

Tue 9/22

6:00 am-5:55 pm

2 stops22h 55m

$1,075

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Thu 9/17

8:00 am-11:10 pm

2 stops28h 10m

Washington, D.C. Reagan-National

Mon 9/21

11:31 am-9:15 pm

2 stops44h 44m

$1,132

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Mon 9/14

8:00 am-11:10 pm

2 stops28h 10m

Washington, D.C. Reagan-National

Tue 9/22

11:31 am-9:15 pm

2 stops20h 44m

$1,166

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Mon 9/14

8:00 am-11:10 pm

2 stops28h 10m

Washington, D.C. Reagan-National

Tue 9/22

7:42 am-9:15 pm

2 stops24h 33m

$1,175

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Wed 9/16

8:00 am-4:29 pm

2 stops21h 29m

Washington, D.C. Reagan-National

Mon 9/21

6:00 am-9:15 pm

2 stops26h 15m

$1,189

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Thu 9/10

8:00 am-11:10 pm

2 stops28h 10m

Washington, D.C. Reagan-National

Thu 9/17

8:40 am-9:15 pm

2 stops23h 35m

$1,253

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Sat 9/12

12:05 pm-10:58 pm

2 stops23h 53m

Washington, D.C. Reagan-National

Tue 9/29

5:00 am-5:55 pm

2 stops23h 55m

$1,331

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Sat 11/14

1:50 pm-5:59 pm

2 stops42h 09m

Washington, D.C. Reagan-National

Tue 11/17

6:59 pm-12:50 pm

2 stops51h 51m

$1,403

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Fri 11/20

8:00 am-8:19 am

2 stops38h 19m

Washington, D.C. Reagan-National

Sun 11/22

5:12 pm-10:55 am

2 stops27h 43m

$1,425

SeoulWashington, D.C.

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

GMPDCA

Seoul Gimpo Intl

Wed 11/4

7:40 pm-7:19 pm

2 stops61h 39m

Washington, D.C. Reagan-National

Sun 11/8

6:00 am-6:20 pm

2 stops46h 20m

$1,426

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National 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 Seoul Gimpo Intl to Washington, D.C. Reagan-National?

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

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

Are you open to changing your travel dates? Check out the ideal times to fly from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport (GMP to DCA) flight deals and tips

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

Fastest flight time

20h 54m

Direct flights

None
The fastest flight from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport takes 20h 54m
There are no direct flights from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport.
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Frequently asked questions about flying from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport

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

    Seoul Gimpo Intl and Washington, D.C. Reagan-National are 6938.8 mi apart from one another. Typically, this will take 20h 54m by plane in normal conditions.

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

    Prices for flights from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seoul Gimpo Intl Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The travel and health documents required for your trip to Washington, D.C. Reagan-National Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Reagan-National Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Arlington
Gettysburg
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Colonial Beach
Springfield
Fairfax
Tysons
Edgewood
Glen Burnie
College Park

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Seoul with this policy.

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