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Cheap flights from Washington, D.C. to Seoul from $455

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 1/19. 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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Cheap round-trip flights

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Multiple Airlines Logo
7:40 pm - 7:50 pmIAD-GMP
34h 10m3 stops
Multiple Airlines Logo
8:50 pm - 6:30 pmGMP-IAD
35h 40m3 stops
$1,140Multiple Airlines
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Thu, Dec 4 - Thu, Dec 11
Multiple Airlines Logo
7:40 pm - 7:50 pmIAD-GMP
34h 10m3 stops
Multiple Airlines Logo
8:50 pm - 6:30 pmGMP-IAD
35h 40m3 stops
$1,163Multiple Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
7:40 pm - 7:50 pmBWI-GMP
34h 10m3 stops
Multiple Airlines Logo
8:50 pm - 6:40 pmGMP-BWI
35h 50m3 stops
$1,192Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Multiple Airlines Logo
7:40 pm - 7:50 pmIAD-GMP
34h 10m3 stops
Multiple Airlines Logo
8:50 pm - 6:30 pmGMP-IAD
35h 40m3 stops
$1,244Multiple Airlines
Find Deal
Tue, Dec 2 - Sun, Dec 14
Japan Airlines Logo
6:00 am - 10:05 pmBWI-GMP
50h 05m2 stops
Japan Airlines Logo
12:05 pm - 5:55 pmGMP-BWI
43h 50m2 stops
$1,325Japan Airlines
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Tue, Feb 10 - Thu, Feb 19
Air China Logo
9:10 am - 1:05 pmIAD-GMP
37h 55m2 stops
Air China Logo
2:25 pm - 6:51 amGMP-IAD
30h 26m2 stops
$1,590Air China
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Thu, Nov 27 - Thu, Dec 4
ANA Logo
11:10 am - 11:20 amIAD-GMP
34h 10m1 stop
ANA Logo
7:50 pm - 9:10 amGMP-IAD
27h 20m1 stop
$1,601ANA
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Mon, Jan 12 - Sun, Feb 15
ANA Logo
11:10 am - 10:30 pmIAD-GMP
21h 20m1 stop
ANA Logo
7:55 pm - 10:05 amGMP-IAD
27h 10m1 stop
$1,602ANA
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Wed, Feb 4 - Wed, May 6
Air China Logo
10:00 pm - 1:05 pmIAD-GMP
25h 05m1 stop
Air China Logo
8:50 am - 6:30 pmGMP-IAD
23h 40m1 stop
$1,653Air China
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Tue, Dec 2 - Tue, Dec 9
Japan Airlines Logo
5:54 pm - 10:55 amDCA-GMP
27h 01m2 stops
Japan Airlines Logo
8:00 am - 4:25 pmGMP-DCA
22h 25m2 stops
$1,699Japan Airlines
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Sat, Dec 6 - Mon, Dec 15

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
Nov 27
IAD9:10 amWashington, D.C. Dulles Intl
37h 55m
2 stops
GMP1:05 pmSeoul Gimpo Intl
Dec 4
GMP2:25 pmSeoul Gimpo Intl
30h 26m
2 stops
IAD6:51 amWashington, D.C. Dulles Intl
$1,590
Find similar
Air China
Dec 2
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Dec 9
GMP8:50 amSeoul Gimpo Intl
23h 40m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,653
Find similar
Air China
Nov 17
IAD12:35 pmWashington, D.C. Dulles Intl
34h 30m
2 stops
GMP1:05 pmSeoul Gimpo Intl
Nov 26
GMP8:50 amSeoul Gimpo Intl
24h 36m
2 stops
IAD7:26 pmWashington, D.C. Dulles Intl
$1,688
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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
Jan 12
IAD11:10 amWashington, D.C. Dulles Intl
34h 10m
1 stop
GMP11:20 amSeoul Gimpo Intl
Feb 15
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,601
Find similar
ANA
Feb 4
IAD11:10 amWashington, D.C. Dulles Intl
21h 20m
1 stop
GMP10:30 pmSeoul Gimpo Intl
May 6
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,602
Find similar
ANA
Jan 8
IAD11:10 amWashington, D.C. Dulles Intl
21h 20m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Feb 11
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,622
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 November 4, 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

Thu 12/4

7:40 pm-7:50 pm

3 stops34h 10m

Seoul Gimpo Intl

Thu 12/11

8:50 pm-6:30 pm

3 stops35h 40m

$1,140

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 12/2

7:40 pm-7:50 pm

3 stops34h 10m

Seoul Gimpo Intl

Tue 12/9

8:50 pm-6:30 pm

3 stops35h 40m

$1,163

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Thu 12/4

7:40 pm-7:50 pm

3 stops34h 10m

Seoul Gimpo Intl

Thu 12/11

8:50 pm-6:40 pm

3 stops35h 50m

$1,192

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 12/2

7:40 pm-7:50 pm

3 stops34h 10m

Seoul Gimpo Intl

Sun 12/14

8:50 pm-6:30 pm

3 stops35h 40m

$1,244

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Tue 2/10

6:00 am-10:05 pm

2 stops50h 05m

Seoul Gimpo Intl

Thu 2/19

12:05 pm-5:55 pm

2 stops43h 50m

$1,325

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 11/27

9:10 am-1:05 pm

2 stops37h 55m

Seoul Gimpo Intl

Thu 12/4

2:25 pm-6:51 am

2 stops30h 26m

$1,590

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 1/12

11:10 am-11:20 am

1 stop34h 10m

Seoul Gimpo Intl

Sun 2/15

7:50 pm-9:10 am

1 stop27h 20m

$1,601

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 2/4

11:10 am-10:30 pm

1 stop21h 20m

Seoul Gimpo Intl

Wed 5/6

7:55 pm-10:05 am

1 stop27h 10m

$1,602

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 12/2

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 12/9

8:50 am-6:30 pm

1 stop23h 40m

$1,653

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sat 12/6

5:54 pm-10:55 am

2 stops27h 01m

Seoul Gimpo Intl

Mon 12/15

8:00 am-4:25 pm

2 stops22h 25m

$1,699

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. 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

Direct flights

None
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.
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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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