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Cheap flights from Washington, D.C. Dulles Intl Airport to Seoul from $600

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. Dulles Intl Airport to Seoul departing on 9/23. 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. Dulles Intl Airport to Seoul

Cheap round-trip flights

Logo
6:25 am - 9:50 pmIAD-GMP
26h 25m2 stops
Logo
8:00 am - 6:23 amGMP-IAD
35h 23m2 stops
$1,206
Find Deal
Mon, Oct 20 - Tue, Oct 28
Air China Logo
10:00 pm - 1:05 pmIAD-GMP
25h 05m1 stop
Air China Logo
2:25 pm - 6:48 amGMP-IAD
30h 23m2 stops
$1,374Air China
Find Deal
Tue, Nov 4 - Thu, Nov 13
Air China Logo
10:00 pm - 1:05 pmIAD-GMP
25h 05m1 stop
Air China Logo
2:25 pm - 6:48 amGMP-IAD
30h 23m2 stops
$1,378Air China
Find Deal
Tue, Nov 4 - Thu, Nov 13
Air China Logo
11:00 pm - 1:05 pmIAD-GMP
25h 05m1 stop
Air China Logo
8:35 am - 6:30 pmGMP-IAD
23h 55m1 stop
$1,521Air China
Find Deal
Fri, Oct 31 - Tue, Nov 11
Logo
10:20 am - 9:50 pmIAD-GMP
22h 30m2 stops
Logo
8:00 am - 9:20 pmGMP-IAD
26h 20m2 stops
$1,525
Find Deal
Tue, Oct 21 - Fri, Oct 31
Air China Logo
10:00 pm - 1:05 pmIAD-GMP
25h 05m1 stop
Air China Logo
8:35 am - 6:30 pmGMP-IAD
23h 55m1 stop
$1,551Air China
Find Deal
Fri, Nov 21 - Fri, Nov 28
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
$1,565Air China
Find Deal
Tue, Oct 21 - Tue, Oct 28
ANA Logo
12:10 pm - 10:30 pmIAD-GMP
21h 20m1 stop
ANA Logo
7:50 pm - 9:10 amGMP-IAD
27h 20m1 stop
$1,627ANA
Find Deal
Mon, Oct 27 - Mon, Nov 10
ANA Logo
11:05 am - 10:30 pmIAD-GMP
21h 25m1 stop
ANA Logo
7:50 pm - 9:10 amGMP-IAD
27h 20m1 stop
$1,647ANA
Find Deal
Thu, Nov 13 - Mon, Dec 1
ANA Logo
11:05 am - 10:30 pmIAD-GMP
21h 25m1 stop
ANA Logo
7:50 pm - 9:10 amGMP-IAD
27h 20m1 stop
$1,651ANA
Find Deal
Mon, Nov 10 - Wed, Nov 19

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

Our best ANA deals on Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport flight tickets
ANA
Oct 27
IAD12:10 pmWashington, D.C. Dulles Intl
21h 20m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Nov 10
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,627
Find similar
ANA
Nov 13
IAD11:05 amWashington, D.C. Dulles Intl
21h 25m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Dec 1
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,647
Find similar
ANA
Nov 10
IAD11:05 amWashington, D.C. Dulles Intl
21h 25m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Nov 19
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,651
Find similar

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

Our best Air China deals on Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport flight tickets
Air China
Nov 4
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Nov 13
GMP2:25 pmSeoul Gimpo Intl
30h 23m
2 stops
IAD6:48 amWashington, D.C. Dulles Intl
$1,374
Find similar
Air China
Nov 4
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Nov 13
GMP2:25 pmSeoul Gimpo Intl
30h 23m
2 stops
IAD6:48 amWashington, D.C. Dulles Intl
$1,378
Find similar
Air China
Oct 31
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Nov 11
GMP8:35 amSeoul Gimpo Intl
23h 55m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,521
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 September 7, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

Mon 10/20

6:25 am-9:50 pm

2 stops26h 25m

Seoul Gimpo Intl

Tue 10/28

8:00 am-6:23 am

2 stops35h 23m

$1,206

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 11/4

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Thu 11/13

2:25 pm-6:48 am

2 stops30h 23m

$1,374

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 11/4

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Thu 11/13

2:25 pm-6:48 am

2 stops30h 23m

$1,378

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 10/31

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 11/11

8:35 am-6:30 pm

1 stop23h 55m

$1,521

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 10/21

10:20 am-9:50 pm

2 stops22h 30m

Seoul Gimpo Intl

Fri 10/31

8:00 am-9:20 pm

2 stops26h 20m

$1,525

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 11/21

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 11/28

8:35 am-6:30 pm

1 stop23h 55m

$1,551

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 10/21

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 10/28

8:35 am-7:30 pm

1 stop23h 55m

$1,565

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 10/27

12:10 pm-10:30 pm

1 stop21h 20m

Seoul Gimpo Intl

Mon 11/10

7:50 pm-9:10 am

1 stop27h 20m

$1,627

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 11/13

11:05 am-10:30 pm

1 stop21h 25m

Seoul Gimpo Intl

Mon 12/1

7:50 pm-9:10 am

1 stop27h 20m

$1,647

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 11/10

11:05 am-10:30 pm

1 stop21h 25m

Seoul Gimpo Intl

Wed 11/19

7:50 pm-9:10 am

1 stop27h 20m

$1,651

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Seoul Gimpo Intl Airport

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

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

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport.
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  • How far is Washington, D.C. Dulles Intl to Seoul Gimpo Intl by plane?

    The distance between Washington, D.C. Dulles Intl and Seoul Gimpo Intl is about 6925.2 mi. A reasonable flight in good conditions will take 21h 05m.

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

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

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Seoul for you.

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

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

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

momondo provides multiple filters to help you find the best flight to Seoul from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Seoul from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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