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Cheap flights from Seoul Gimpo Intl Airport to Washington, D.C. from $665

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 10/27. 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
8:10 am - 9:26 pm
GMP
-
IAD
26h 16m
2 stops
Multiple Airlines Logo
9:55 am - 10:20 pm
IAD
-
GMP
23h 25m
2 stops
$1,134Multiple Airlines
Wed, Jul 22 - Mon, Aug 24
Multiple Airlines Logo
8:10 am - 9:26 pm
GMP
-
IAD
26h 16m
2 stops
Multiple Airlines Logo
9:55 am - 9:25 pm
IAD
-
GMP
22h 30m
2 stops
$1,239Multiple Airlines
Wed, Jul 22 - Thu, Aug 20
Multiple Airlines Logo
7:00 am - 6:30 pm
GMP
-
IAD
25h 30m
2 stops
Multiple Airlines Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
$1,314Multiple Airlines
Fri, Nov 13 - Fri, Nov 20
Japan Airlines Logo
8:00 am - 11:31 pm
GMP
-
DCA
28h 31m
2 stops
Japan Airlines Logo
6:30 am - 9:15 pm
DCA
-
GMP
25h 45m
2 stops
$1,454Japan Airlines
Wed, Jul 8 - Tue, Jul 14
Japan Airlines Logo
8:00 am - 11:14 pm
GMP
-
DCA
28h 14m
2 stops
Japan Airlines Logo
7:58 pm - 9:15 pm
DCA
-
GMP
36h 17m
2 stops
$1,460Japan Airlines
Tue, Jun 30 - Tue, Jul 7
Japan Airlines Logo
8:00 am - 11:31 pm
GMP
-
DCA
28h 31m
2 stops
Japan Airlines Logo
8:40 am - 9:15 pm
DCA
-
GMP
23h 35m
2 stops
$1,486Japan Airlines
Thu, Jul 9 - Tue, Jul 14
Multiple Airlines Logo
8:00 am - 6:14 pm
GMP
-
BWI
24h 14m
2 stops
Multiple Airlines Logo
6:17 am - 10:05 pm
BWI
-
GMP
25h 48m
2 stops
$1,582Multiple Airlines
Wed, Dec 9 - Wed, Jan 20
ANA Logo
7:55 pm - 2:12 pm
GMP
-
IAD
31h 17m
2 stops
ANA Logo
12:15 pm - 10:20 pm
IAD
-
GMP
21h 05m
1 stop
$1,591ANA
Mon, Jul 6 - Wed, Sep 2
ANA Logo
12:40 pm - 2:12 pm
GMP
-
IAD
38h 32m
2 stops
ANA Logo
3:39 pm - 11:05 am
IAD
-
GMP
30h 26m
2 stops
$1,595ANA
Mon, Jul 6 - Wed, Jul 15
ANA Logo
7:55 pm - 10:05 am
GMP
-
IAD
27h 10m
1 stop
ANA Logo
12:15 pm - 10:20 pm
IAD
-
GMP
21h 05m
1 stop
$1,599ANA
Thu, Oct 15 - Sat, Oct 17

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

Our best ANA deals on Seoul Gimpo Intl Airport to Washington, D.C. flight tickets
ANA
Jul 6
GMP7:55 pmSeoul Gimpo Intl
31h 17m
2 stops
IAD2:12 pmWashington, D.C. Dulles Intl
Sep 2
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
$1,591
ANA
Jul 6
GMP12:40 pmSeoul Gimpo Intl
38h 32m
2 stops
IAD2:12 pmWashington, D.C. Dulles Intl
Jul 15
IAD3:39 pmWashington, D.C. Dulles Intl
30h 26m
2 stops
GMP11:05 amSeoul Gimpo Intl
$1,595
ANA
Oct 15
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
Oct 17
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
$1,599

Air China flights from Seoul Gimpo Intl Airport to Washington, D.C.

Our best Air China deals on Seoul Gimpo Intl Airport to Washington, D.C. flight tickets
Air China
Nov 13
GMP8:35 amSeoul Gimpo Intl
23h 55m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
Nov 20
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
$2,056
Air China
Aug 10
GMP2:25 pmSeoul Gimpo Intl
42h 05m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
Aug 11
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
$2,144
Air China
Oct 5
GMP3:00 pmSeoul Gimpo Intl
41h 30m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
Oct 9
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
$2,275

momondo Fare Finder

 
Customize your flight search to find flights from Seoul Gimpo Intl Airport to Washington, D.C. 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 June 19, 2026.
Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Wed 7/22

8:10 am-9:26 pm

2 stops26h 16m

Washington, D.C. Dulles Intl

Mon 8/24

9:55 am-10:20 pm

2 stops23h 25m

$1,134

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Wed 7/22

8:10 am-9:26 pm

2 stops26h 16m

Washington, D.C. Dulles Intl

Thu 8/20

9:55 am-9:25 pm

2 stops22h 30m

$1,239

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Fri 11/13

7:00 am-6:30 pm

2 stops25h 30m

Washington, D.C. Dulles Intl

Fri 11/20

10:00 pm-1:05 pm

1 stop25h 05m

$1,314

SeoulWashington, D.C.

GMP - DCA

GMPDCA

Seoul Gimpo Intl

Wed 7/8

8:00 am-11:31 pm

2 stops28h 31m

Washington, D.C. Reagan-National

Tue 7/14

6:30 am-9:15 pm

2 stops25h 45m

$1,454

SeoulWashington, D.C.

GMP - DCA

GMPDCA

Seoul Gimpo Intl

Tue 6/30

8:00 am-11:14 pm

2 stops28h 14m

Washington, D.C. Reagan-National

Tue 7/7

7:58 pm-9:15 pm

2 stops36h 17m

$1,460

SeoulWashington, D.C.

GMP - DCA

GMPDCA

Seoul Gimpo Intl

Thu 7/9

8:00 am-11:31 pm

2 stops28h 31m

Washington, D.C. Reagan-National

Tue 7/14

8:40 am-9:15 pm

2 stops23h 35m

$1,486

SeoulBaltimore

GMP - BWI

GMPBWI

Seoul Gimpo Intl

Wed 12/9

8:00 am-6:14 pm

2 stops24h 14m

Baltimore/Washington

Wed 1/20

6:17 am-10:05 pm

2 stops25h 48m

$1,582

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Mon 7/6

7:55 pm-2:12 pm

2 stops31h 17m

Washington, D.C. Dulles Intl

Wed 9/2

12:15 pm-10:20 pm

1 stop21h 05m

$1,591

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Mon 7/6

12:40 pm-2:12 pm

2 stops38h 32m

Washington, D.C. Dulles Intl

Wed 7/15

3:39 pm-11:05 am

2 stops30h 26m

$1,595
Quickest round-trip

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Thu 10/15

7:55 pm-10:05 am

1 stop27h 10m

Washington, D.C. Dulles Intl

Sat 10/17

12:15 pm-10:20 pm

1 stop21h 05m

$1,599

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 Washington, D.C. from

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

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 Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Seoul Gimpo Intl Airport is on a Friday. momondo users have found tickets for Friday departures for as low as $1,233. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seoul Gimpo Intl Airport to Washington, D.C. for around $1,714.

Can stopping save me money on Seoul Gimpo Intl Airport to Washington, D.C. flights?

You could potentially save up to 4% on your flight if you consider stops on a Seoul Gimpo Intl Airport to Washington, D.C. flight.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Seoul Gimpo Intl Airport to Washington, D.C. 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. (GMP to WAS) 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.

Fastest flight time

21h 16m

Direct flights

None
The fastest flight from Seoul Gimpo Intl Airport to Washington, D.C. takes 21h 16m
There are no direct flights from Seoul Gimpo Intl Airport to Washington, D.C.. There are no popular flight routes from Seoul Gimpo Intl Airport to Washington, D.C..
Search flight deals

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

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

    The distance between Seoul Gimpo Intl and Washington, D.C. is about 6935.3 mi. Typically, this will take 21h 16m by plane in normal conditions.

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

    Prices for flights from Seoul Gimpo Intl Airport to Washington, D.C. refresh daily.

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

    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 Seoul Gimpo Intl Airport to Washington, D.C..

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

    The travel and health documents required for your trip to Washington, D.C. 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.. 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
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Fredericksburg
Gaithersburg
Colonial Beach
Rockville
Linthicum Heights
Silver Spring
Towson
Manassas
Tysons
Springfield
Bethesda
Fairfax
College Park

Why use momondo?

Why should I use momondo to find a flight deal from Seoul to Washington, D.C.?

Finding the right flight to Washington, D.C. from Seoul is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Seoul to Washington, D.C. flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Seoul.

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

If you are not ready to book a flight from Seoul to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport