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Cheap flights from Washington, D.C. Dulles Intl Airport to Seoul from $598

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 1/12. 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. Dulles Intl Airport to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:00 am - 10:35 pm
IAD
-
GMP
23h 35m2 stops
Multiple Airlines Logo
8:40 am - 8:29 pm
GMP
-
IAD
25h 49m2 stops
$1,317Multiple Airlines
mar., ene. 27 - mar., feb. 3
Multiple Airlines Logo
9:00 am - 10:35 pm
IAD
-
GMP
23h 35m2 stops
Multiple Airlines Logo
8:40 am - 8:29 pm
GMP
-
IAD
25h 49m2 stops
$1,318Multiple Airlines
mar., ene. 27 - mar., feb. 3
Multiple Airlines Logo
9:00 am - 10:35 pm
IAD
-
GMP
23h 35m2 stops
Multiple Airlines Logo
8:40 am - 8:29 pm
GMP
-
IAD
25h 49m2 stops
$1,326Multiple Airlines
mar., ene. 27 - mar., feb. 3
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m1 stop
Air China Logo
8:35 am - 7:30 pm
GMP
-
IAD
23h 55m1 stop
$1,469Air China
vie., abr. 17 - vie., abr. 24
Multiple Airlines Logo
9:00 am - 10:35 pm
IAD
-
GMP
23h 35m2 stops
Multiple Airlines Logo
1:30 pm - 9:05 am
GMP
-
IAD
33h 35m2 stops
$1,474Multiple Airlines
mar., ene. 20 - sáb., ene. 24
Air China Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m1 stop
Air China Logo
8:50 am - 6:30 pm
GMP
-
IAD
23h 40m1 stop
$1,479Air China
mar., ene. 27 - mar., feb. 3
Multiple Airlines Logo
9:00 am - 10:35 pm
IAD
-
GMP
23h 35m2 stops
Multiple Airlines Logo
8:40 am - 8:26 pm
GMP
-
IAD
25h 46m2 stops
$1,491Multiple Airlines
lun., ene. 12 - lun., ene. 26
Multiple Airlines Logo
9:00 am - 10:05 pm
IAD
-
GMP
23h 05m2 stops
Multiple Airlines Logo
8:00 am - 8:26 pm
GMP
-
IAD
26h 26m2 stops
$1,498Multiple Airlines
lun., ene. 12 - lun., ene. 26
Air China Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m1 stop
Air China Logo
8:50 am - 6:30 pm
GMP
-
IAD
23h 40m1 stop
$1,513Air China
mar., ene. 27 - mar., feb. 3
Air China Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m1 stop
Air China Logo
8:50 am - 6:30 pm
GMP
-
IAD
23h 40m1 stop
$1,520Air China
mar., ene. 20 - mar., feb. 3

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
Apr 17
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Apr 24
GMP8:35 amSeoul Gimpo Intl
23h 55m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,469
Find similar
Air China
Jan 27
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Feb 3
GMP8:50 amSeoul Gimpo Intl
23h 40m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,479
Find similar
Air China
Jan 27
IAD10:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Feb 3
GMP8:50 amSeoul Gimpo Intl
23h 40m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,513
Find similar

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
Jan 12
IAD11:10 amWashington, D.C. Dulles Intl
21h 20m
1 stop
GMP10:30 pmSeoul Gimpo Intl
Jan 26
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,612
Find similar
ANA
Jan 12
IAD11:10 amWashington, D.C. Dulles Intl
34h 10m
1 stop
GMP11:20 amSeoul Gimpo Intl
Jan 26
GMP7:50 pmSeoul Gimpo Intl
27h 20m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$1,615
Find similar
ANA
Apr 6
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Apr 29
GMP7:55 pmSeoul Gimpo Intl
32h 45m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl
$1,618
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 diciembre 15, 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

mar. 1/27

9:00 am-10:35 pm

2 stops23h 35m

Seoul Gimpo Intl

mar. 2/3

8:40 am-8:29 pm

2 stops25h 49m

$1,317

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 1/27

9:00 am-10:35 pm

2 stops23h 35m

Seoul Gimpo Intl

mar. 2/3

8:40 am-8:29 pm

2 stops25h 49m

$1,318

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 1/27

9:00 am-10:35 pm

2 stops23h 35m

Seoul Gimpo Intl

mar. 2/3

8:40 am-8:29 pm

2 stops25h 49m

$1,326

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

vie. 4/17

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

vie. 4/24

8:35 am-7:30 pm

1 stop23h 55m

$1,469

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 1/20

9:00 am-10:35 pm

2 stops23h 35m

Seoul Gimpo Intl

sáb. 1/24

1:30 pm-9:05 am

2 stops33h 35m

$1,474

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 1/27

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

mar. 2/3

8:50 am-6:30 pm

1 stop23h 40m

$1,479

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

lun. 1/12

9:00 am-10:35 pm

2 stops23h 35m

Seoul Gimpo Intl

lun. 1/26

8:40 am-8:26 pm

2 stops25h 46m

$1,491

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

lun. 1/12

9:00 am-10:05 pm

2 stops23h 05m

Seoul Gimpo Intl

lun. 1/26

8:00 am-8:26 pm

2 stops26h 26m

$1,498

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 1/27

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

mar. 2/3

8:50 am-6:30 pm

1 stop23h 40m

$1,513

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 1/20

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

mar. 2/3

8:50 am-6:30 pm

1 stop23h 40m

$1,520

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. 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

Fastest flight time

21h 05m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport takes 21h 05m
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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