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Cheap flights from Washington, D.C. to Seoul from $614

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. to Seoul departing on 1/6. 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
0 bags

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Cheap round-trip flights

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Japan Airlines Logo
6:00 am - 10:05 pm
BWI
-
GMP
50h 05m2 stops
Japan Airlines Logo
7:40 pm - 5:54 pm
GMP
-
BWI
36h 14m2 stops
$1,156Japan Airlines
Wed, Feb 11 - Wed, Feb 18
Japan Airlines Logo
6:43 am - 10:05 pm
BWI
-
GMP
49h 22m2 stops
Japan Airlines Logo
12:05 pm - 5:04 pm
GMP
-
BWI
42h 59m2 stops
$1,171Japan Airlines
Thu, Feb 19 - Sun, Mar 8
Japan Airlines Logo
6:00 am - 10:05 pm
BWI
-
GMP
50h 05m2 stops
Japan Airlines Logo
7:40 pm - 9:46 pm
GMP
-
BWI
40h 06m2 stops
$1,193Japan Airlines
Wed, Feb 11 - Wed, Feb 18
Air China Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m1 stop
Air China Logo
2:25 pm - 6:30 pm
GMP
-
IAD
18h 05m1 stop
$1,220Air China
Tue, Jan 13 - Fri, Jan 23
China Eastern Logo
11:10 am - 11:00 am
DCA
-
GMP
33h 50m2 stops
China Eastern Logo
8:50 pm - 10:48 pm
GMP
-
DCA
39h 58m2 stops
$1,245China Eastern
Mon, Jan 26 - Sat, Jan 31
Multiple Airlines Logo
12:50 pm - 10:55 am
BWI
-
GMP
32h 05m2 stops
Multiple Airlines Logo
8:00 am - 2:49 pm
GMP
-
BWI
20h 49m2 stops
$1,348Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
6:59 am - 10:05 pm
DCA
-
GMP
25h 06m2 stops
Multiple Airlines Logo
8:00 am - 10:35 pm
GMP
-
DCA
28h 35m2 stops
$1,473Multiple Airlines
Fri, Jan 23 - Fri, Jan 30
Air China Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m1 stop
Air China Logo
8:50 am - 7:30 pm
GMP
-
IAD
23h 40m1 stop
$1,569Air China
Tue, Jan 20 - Fri, Mar 27
ANA Logo
11:10 am - 10:30 pm
IAD
-
GMP
21h 20m1 stop
ANA Logo
7:50 pm - 9:10 am
GMP
-
IAD
27h 20m1 stop
$1,585ANA
Tue, Feb 10 - Wed, Feb 18
ANA Logo
12:15 pm - 10:20 pm
IAD
-
GMP
21h 05m1 stop
ANA Logo
12:40 pm - 10:05 am
GMP
-
IAD
34h 25m1 stop
$1,586ANA
Mon, Apr 27 - Tue, Jun 16

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

Our best ANA deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
ANA
Feb 25
IAD11:10 amWashington, D.C. Dulles Intl
21h 20m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Mar 24
GMP7:45 amSeoul Gimpo Intl
21h 55m
1 stop
IAD4:40 pmWashington, D.C. Dulles Intl
$1,585
Find similar
ANA
Jan 7
IAD11:10 amWashington, D.C. Dulles Intl
21h 20m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Jan 20
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,587
Find similar
ANA
Mar 4
IAD11:10 amWashington, D.C. Dulles Intl
21h 20m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Jun 3
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,622
Find similar

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

Our best Air China deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
Air China
Jan 13
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Jan 23
GMP2:25 pmSeoul Gimpo Intl
18h 05m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,220
Find similar
Air China
Jan 23
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Jan 30
GMP2:25 pmSeoul Gimpo Intl
18h 05m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,265
Find similar
Air China
Jan 6
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Jan 13
GMP2:25 pmSeoul Gimpo Intl
18h 05m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,497
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 December 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Wed 2/11

6:00 am-10:05 pm

2 stops50h 05m

Seoul Gimpo Intl

Wed 2/18

7:40 pm-5:54 pm

2 stops36h 14m

$1,156

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Thu 2/19

6:43 am-10:05 pm

2 stops49h 22m

Seoul Gimpo Intl

Sun 3/8

12:05 pm-5:04 pm

2 stops42h 59m

$1,171

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Wed 2/11

6:00 am-10:05 pm

2 stops50h 05m

Seoul Gimpo Intl

Wed 2/18

7:40 pm-9:46 pm

2 stops40h 06m

$1,193

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 1/13

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 1/23

2:25 pm-6:30 pm

1 stop18h 05m

$1,220

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 1/26

11:10 am-11:00 am

2 stops33h 50m

Seoul Gimpo Intl

Sat 1/31

8:50 pm-10:48 pm

2 stops39h 58m

$1,245

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Sat 1/24

12:50 pm-10:55 am

2 stops32h 05m

Seoul Gimpo Intl

Sat 1/31

8:00 am-2:49 pm

2 stops20h 49m

$1,348

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Fri 1/23

6:59 am-10:05 pm

2 stops25h 06m

Seoul Gimpo Intl

Fri 1/30

8:00 am-10:35 pm

2 stops28h 35m

$1,473

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 1/20

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 3/27

8:50 am-7:30 pm

1 stop23h 40m

$1,569

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 2/10

11:10 am-10:30 pm

1 stop21h 20m

Seoul Gimpo Intl

Wed 2/18

7:50 pm-9:10 am

1 stop27h 20m

$1,585

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 4/27

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Tue 6/16

12:40 pm-10:05 am

1 stop34h 25m

$1,586

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Seoul from

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

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

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

Fastest flight time

21h 05m

Direct flights

None
The fastest flight from Washington, D.C. to Seoul Gimpo Intl Airport takes 21h 05m
There are no direct flights from Washington, D.C. to Seoul Gimpo Intl Airport. There are no popular flight routes from Washington, D.C. to Seoul Gimpo Intl Airport.
Search flight deals

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

    Seoul Gimpo Intl is 6935.3 mi away from Washington, D.C.. Typically, this will take 21h 05m by plane in normal conditions.

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

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

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

It is quick and easy to find Washington, D.C. to Seoul flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seoul that suits you.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Seoul.

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

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

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