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Cheap flights from Washington, D.C. Dulles Intl Airport to Seoul from $440

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 4/14. 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.
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
8:40 am - 7:30 pm
GMP
-
IAD
23h 50m
1 stop
$1,266Air China
Fri, Mar 13 - Tue, Mar 24
Multiple Airlines Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Multiple Airlines Logo
12:05 pm - 5:40 am
GMP
-
IAD
30h 35m
2 stops
$1,285Multiple Airlines
Fri, Mar 6 - Mon, Mar 16
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
8:40 am - 7:30 pm
GMP
-
IAD
23h 50m
1 stop
$1,334Air China
Fri, Mar 13 - Tue, Mar 24
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
8:40 am - 7:30 pm
GMP
-
IAD
23h 50m
1 stop
$1,339Air China
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Multiple Airlines Logo
12:05 pm - 5:40 am
GMP
-
IAD
30h 35m
2 stops
$1,347Multiple Airlines
Fri, Mar 6 - Mon, Mar 16
Air China Logo
10:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
8:40 am - 7:30 pm
GMP
-
IAD
23h 50m
1 stop
$1,476Air China
Fri, Mar 6 - Fri, Mar 13
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
3:00 pm - 7:30 pm
GMP
-
IAD
41h 30m
1 stop
$1,481Air China
Tue, Mar 17 - Thu, Apr 16
ANA Logo
12:15 pm - 10:20 pm
IAD
-
GMP
21h 05m
1 stop
ANA Logo
7:40 am - 3:50 pm
GMP
-
IAD
21h 10m
1 stop
$1,506ANA
Tue, Apr 7 - Tue, Jul 7
ANA Logo
1:10 pm - 11:05 am
IAD
-
GMP
32h 55m
2 stops
ANA Logo
7:55 pm - 10:05 am
GMP
-
IAD
27h 10m
1 stop
$1,510ANA
Tue, Apr 7 - Wed, Apr 22
ANA Logo
12:15 pm - 10:20 pm
IAD
-
GMP
21h 05m
1 stop
ANA Logo
7:55 pm - 2:03 pm
GMP
-
IAD
31h 08m
2 stops
$1,515ANA
Thu, Apr 30 - Mon, May 11

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
Mar 13
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Mar 24
GMP8:40 amSeoul Gimpo Intl
23h 50m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,266
Air China
Mar 13
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Mar 24
GMP8:40 amSeoul Gimpo Intl
23h 50m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,334
Air China
Mar 10
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Mar 17
GMP8:40 amSeoul Gimpo Intl
23h 50m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,339

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
Apr 7
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Jul 7
GMP7:40 amSeoul Gimpo Intl
21h 10m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$1,506
ANA
Apr 7
IAD1:10 pmWashington, D.C. Dulles Intl
32h 55m
2 stops
GMP11:05 amSeoul Gimpo Intl
Apr 22
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,510
ANA
Apr 30
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
May 11
GMP7:55 pmSeoul Gimpo Intl
31h 08m
2 stops
IAD2:03 pmWashington, D.C. Dulles Intl
$1,515

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 February 8, 2026.
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

Fri 3/13

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 3/24

8:40 am-7:30 pm

1 stop23h 50m

$1,266

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 3/6

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Mon 3/16

12:05 pm-5:40 am

2 stops30h 35m

$1,285

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 3/13

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 3/24

8:40 am-7:30 pm

1 stop23h 50m

$1,334

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 3/10

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 3/17

8:40 am-7:30 pm

1 stop23h 50m

$1,339

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 3/6

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Mon 3/16

12:05 pm-5:40 am

2 stops30h 35m

$1,347

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Fri 3/6

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Fri 3/13

8:40 am-7:30 pm

1 stop23h 50m

$1,476

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 3/17

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Thu 4/16

3:00 pm-7:30 pm

1 stop41h 30m

$1,481

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 4/7

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Tue 7/7

7:40 am-3:50 pm

1 stop21h 10m

$1,506

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 4/7

1:10 pm-11:05 am

2 stops32h 55m

Seoul Gimpo Intl

Wed 4/22

7:55 pm-10:05 am

1 stop27h 10m

$1,510

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 4/30

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Mon 5/11

7:55 pm-2:03 pm

2 stops31h 08m

$1,515

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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.
Search flight deals

  • 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.

  • How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport?

    Search flight deals from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Washington, D.C. Dulles Intl Airport to Seoul Gimpo Intl Airport with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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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