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Cheap flights from Washington, D.C. to Seoul from $536

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 8/12. 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. to Seoul

Cheap round-trip flights

Logo
9:00 am - 10:20 pmIAD-GMP
23h 20m2 stops
Logo
7:50 am - 8:29 pmGMP-IAD
26h 39m2 stops
$1,017
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Tue, Dec 9 - Tue, Dec 16
Logo
6:41 am - 9:50 pmBWI-GMP
26h 09m2 stops
Logo
7:50 am - 10:54 pmGMP-BWI
29h 04m2 stops
$1,117
Find Deal
Wed, Sep 3 - Thu, Nov 13
Logo
6:41 am - 9:50 pmBWI-GMP
26h 09m2 stops
Logo
7:55 am - 11:22 pmGMP-BWI
28h 27m2 stops
$1,124
Find Deal
Tue, Sep 9 - Sat, Sep 13
Japan Airlines Logo
6:00 am - 10:45 amBWI-GMP
39h 45m2 stops
Japan Airlines Logo
7:50 am - 6:42 pmGMP-BWI
24h 52m2 stops
$1,184Japan Airlines
Find Deal
Wed, Oct 15 - Thu, Nov 13
Japan Airlines Logo
6:00 am - 10:45 amBWI-GMP
39h 45m2 stops
Japan Airlines Logo
7:50 am - 7:19 pmGMP-BWI
25h 29m2 stops
$1,185Japan Airlines
Find Deal
Wed, Oct 22 - Sat, Nov 8
Japan Airlines Logo
6:00 am - 10:45 amBWI-GMP
39h 45m2 stops
Japan Airlines Logo
7:55 am - 11:48 pmGMP-BWI
28h 53m2 stops
$1,196Japan Airlines
Find Deal
Tue, Oct 14 - Sat, Oct 25
Air China Logo
11:00 pm - 1:05 pmIAD-GMP
25h 05m1 stop
Air China Logo
8:35 am - 7:30 pmGMP-IAD
23h 55m1 stop
$1,321Air China
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Tue, Sep 2 - Fri, Sep 12
Air China Logo
11:00 pm - 1:05 pmIAD-GMP
25h 05m1 stop
Air China Logo
2:25 pm - 7:19 amGMP-IAD
29h 54m2 stops
$1,343Air China
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Fri, Sep 5 - Fri, Sep 12
ANA Logo
12:15 pm - 10:20 pmIAD-GMP
21h 05m1 stop
ANA Logo
7:50 pm - 9:10 amGMP-IAD
27h 20m1 stop
$1,580ANA
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Wed, Sep 3 - Thu, Nov 13
ANA Logo
12:15 pm - 11:05 amIAD-GMP
33h 50m1 stop
ANA Logo
7:40 am - 3:35 pmGMP-IAD
20h 55m1 stop
$1,603ANA
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Tue, Sep 2 - Tue, Sep 9

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

Our best Japan Airlines deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Oct 15
BWI6:00 amBaltimore/Washington
39h 45m
2 stops
GMP10:45 amSeoul Gimpo Intl
Nov 13
GMP7:50 amSeoul Gimpo Intl
24h 52m
2 stops
BWI6:42 pmBaltimore/Washington
$1,184
Find similar
Japan Airlines
Oct 22
BWI6:00 amBaltimore/Washington
39h 45m
2 stops
GMP10:45 amSeoul Gimpo Intl
Nov 8
GMP7:50 amSeoul Gimpo Intl
25h 29m
2 stops
BWI7:19 pmBaltimore/Washington
$1,185
Find similar
Japan Airlines
Oct 14
BWI6:00 amBaltimore/Washington
39h 45m
2 stops
GMP10:45 amSeoul Gimpo Intl
Oct 25
GMP7:55 amSeoul Gimpo Intl
28h 53m
2 stops
BWI11:48 pmBaltimore/Washington
$1,196
Find similar

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
Sep 3
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Nov 13
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,580
Find similar
ANA
Sep 2
IAD12:15 pmWashington, D.C. Dulles Intl
33h 50m
1 stop
GMP11:05 amSeoul Gimpo Intl
Sep 9
GMP7:40 amSeoul Gimpo Intl
20h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,603
Find similar
ANA
Sep 11
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Sep 22
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,604
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 July 31, 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

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 12/9

9:00 am-10:20 pm

2 stops23h 20m

Seoul Gimpo Intl

Tue 12/16

7:50 am-8:29 pm

2 stops26h 39m

$1,017

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Wed 9/3

6:41 am-9:50 pm

2 stops26h 09m

Seoul Gimpo Intl

Thu 11/13

7:50 am-10:54 pm

2 stops29h 04m

$1,117

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Tue 9/9

6:41 am-9:50 pm

2 stops26h 09m

Seoul Gimpo Intl

Sat 9/13

7:55 am-11:22 pm

2 stops28h 27m

$1,124

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Wed 10/15

6:00 am-10:45 am

2 stops39h 45m

Seoul Gimpo Intl

Thu 11/13

7:50 am-6:42 pm

2 stops24h 52m

$1,184

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Wed 10/22

6:00 am-10:45 am

2 stops39h 45m

Seoul Gimpo Intl

Sat 11/8

7:50 am-7:19 pm

2 stops25h 29m

$1,185

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Tue 10/14

6:00 am-10:45 am

2 stops39h 45m

Seoul Gimpo Intl

Sat 10/25

7:55 am-11:48 pm

2 stops28h 53m

$1,196

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 9/2

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 9/12

8:35 am-7:30 pm

1 stop23h 55m

$1,321

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 9/5

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 9/12

2:25 pm-7:19 am

2 stops29h 54m

$1,343

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 9/3

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Thu 11/13

7:50 pm-9:10 am

1 stop27h 20m

$1,580

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 9/2

12:15 pm-11:05 am

1 stop33h 50m

Seoul Gimpo Intl

Tue 9/9

7:40 am-3:35 pm

1 stop20h 55m

$1,603

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

Best Price Found

$536

Fastest flight time

21h 05m

Direct flights

None
The best one-way flight to Seoul Gimpo Intl Airport from Washington, D.C. in the past 72 hours is $536. The best round-trip flight deal from Washington, D.C. to Seoul Gimpo Intl Airport found on momondo in the last 72 hours is $1,017.
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. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - Seoul Gimpo Intl Airport, Washington, D.C. Dulles Intl Airport - Seoul Gimpo Intl Airport and Baltimore/Washington Airport - Seoul Gimpo Intl Airport.
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  • 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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