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Cheap flights from Washington, D.C. Dulles Intl Airport to Seoul from $422

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 1/20. 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
1:30 pm - 6:20 pm
IAD
-
ICN
38h 50m1 stop
Multiple Airlines Logo
5:55 pm - 8:54 pm
ICN
-
IAD
40h 59m2 stops
$1,063Multiple Airlines
Mon, Jan 12 - Fri, Jan 30
Multiple Airlines Logo
9:15 pm - 9:05 am
IAD
-
ICN
21h 50m1 stop
Multiple Airlines Logo
6:55 pm - 5:04 pm
ICN
-
IAD
36h 09m2 stops
$1,066Multiple Airlines
Mon, Jan 12 - Mon, Jan 26
Turkish Airlines Logo
2:30 pm - 9:05 am
IAD
-
ICN
29h 35m1 stop
Turkish Airlines Logo
11:20 pm - 11:35 am
ICN
-
IAD
25h 15m1 stop
$1,069Turkish Airlines
Wed, Mar 11 - Wed, Apr 8
Multiple Airlines Logo
9:15 pm - 9:05 am
IAD
-
ICN
21h 50m1 stop
Multiple Airlines Logo
6:55 pm - 5:04 pm
ICN
-
IAD
36h 09m2 stops
$1,074Multiple Airlines
Mon, Jan 12 - Fri, Jan 30
Turkish Airlines Logo
1:30 pm - 9:05 am
IAD
-
ICN
29h 35m1 stop
Turkish Airlines Logo
12:10 am - 11:45 am
ICN
-
IAD
25h 35m1 stop
$1,076Turkish Airlines
Thu, Jan 29 - Wed, Feb 4
Turkish Airlines Logo
1:30 pm - 9:05 am
IAD
-
ICN
29h 35m1 stop
Turkish Airlines Logo
12:10 am - 11:45 am
ICN
-
IAD
25h 35m1 stop
$1,077Turkish Airlines
Mon, Jan 12 - Sun, Jan 25
Multiple Airlines Logo
6:04 pm - 5:20 am
IAD
-
ICN
21h 16m1 stop
Multiple Airlines Logo
9:20 pm - 10:22 am
ICN
-
IAD
51h 02m2 stops
$1,078Multiple Airlines
Fri, Jan 30 - Sat, Feb 7
Turkish Airlines Logo
9:40 pm - 8:35 am
IAD
-
ICN
21h 55m1 stop
Turkish Airlines Logo
11:20 pm - 11:35 am
ICN
-
IAD
25h 15m1 stop
$1,080Turkish Airlines
Mon, Apr 6 - Mon, Apr 27
Multiple Airlines Logo
9:15 pm - 6:20 pm
IAD
-
ICN
31h 05m1 stop
Multiple Airlines Logo
6:55 pm - 5:04 pm
ICN
-
IAD
36h 09m2 stops
$1,083Multiple Airlines
Tue, Jan 20 - Wed, Jan 28
Turkish Airlines Logo
1:30 pm - 9:05 am
IAD
-
ICN
29h 35m1 stop
Turkish Airlines Logo
12:10 am - 11:45 am
ICN
-
IAD
25h 35m1 stop
$1,085Turkish Airlines
Thu, Jan 15 - Wed, Jan 21

Turkish Airlines flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport

Our best Turkish Airlines deals on Washington, D.C. Dulles Intl Airport to Incheon Intl Airport flight tickets
Turkish Airlines
Mar 11
IAD2:30 pmWashington, D.C. Dulles Intl
29h 35m
1 stop
ICN9:05 amIncheon Intl
Apr 8
ICN11:20 pmIncheon Intl
25h 15m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$1,069
Find similar
Turkish Airlines
Jan 29
IAD1:30 pmWashington, D.C. Dulles Intl
29h 35m
1 stop
ICN9:05 amIncheon Intl
Feb 4
ICN12:10 amIncheon Intl
25h 35m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$1,076
Find similar
Turkish Airlines
Jan 12
IAD1:30 pmWashington, D.C. Dulles Intl
29h 35m
1 stop
ICN9:05 amIncheon Intl
Jan 25
ICN12:10 amIncheon Intl
25h 35m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$1,077
Find similar

Air Canada flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Incheon Intl Airport flight tickets
Air Canada
Dec 29
IAD9:45 amWashington, D.C. Dulles Intl
40h 15m
2 stops
ICN4:00 pmIncheon Intl
Jan 16
ICN5:55 pmIncheon Intl
40h 59m
2 stops
IAD8:54 pmWashington, D.C. Dulles Intl
$1,576
Find similar
Air Canada
Dec 27
IAD10:08 pmWashington, D.C. Dulles Intl
29h 02m
2 stops
ICN5:10 pmIncheon Intl
Jan 16
ICN5:55 pmIncheon Intl
31h 54m
2 stops
IAD11:49 amWashington, D.C. Dulles Intl
$1,837
Find similar
Air Canada
Dec 29
IAD12:43 pmWashington, D.C. Dulles Intl
37h 17m
2 stops
ICN4:00 pmIncheon Intl
Jan 8
ICN6:55 pmIncheon Intl
30h 54m
2 stops
IAD11:49 amWashington, D.C. Dulles Intl
$1,843
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Incheon 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 December 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 1/12

1:30 pm-6:20 pm

1 stop38h 50m

Incheon Intl

Fri 1/30

5:55 pm-8:54 pm

2 stops40h 59m

$1,063

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 1/12

9:15 pm-9:05 am

1 stop21h 50m

Incheon Intl

Mon 1/26

6:55 pm-5:04 pm

2 stops36h 09m

$1,066

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 3/11

2:30 pm-9:05 am

1 stop29h 35m

Incheon Intl

Wed 4/8

11:20 pm-11:35 am

1 stop25h 15m

$1,069

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 1/12

9:15 pm-9:05 am

1 stop21h 50m

Incheon Intl

Fri 1/30

6:55 pm-5:04 pm

2 stops36h 09m

$1,074

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 1/29

1:30 pm-9:05 am

1 stop29h 35m

Incheon Intl

Wed 2/4

12:10 am-11:45 am

1 stop25h 35m

$1,076

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 1/12

1:30 pm-9:05 am

1 stop29h 35m

Incheon Intl

Sun 1/25

12:10 am-11:45 am

1 stop25h 35m

$1,077

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 1/30

6:04 pm-5:20 am

1 stop21h 16m

Incheon Intl

Sat 2/7

9:20 pm-10:22 am

2 stops51h 02m

$1,078

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 4/6

9:40 pm-8:35 am

1 stop21h 55m

Incheon Intl

Mon 4/27

11:20 pm-11:35 am

1 stop25h 15m

$1,080

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 1/20

9:15 pm-6:20 pm

1 stop31h 05m

Incheon Intl

Wed 1/28

6:55 pm-5:04 pm

2 stops36h 09m

$1,083

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 1/15

1:30 pm-9:05 am

1 stop29h 35m

Incheon Intl

Wed 1/21

12:10 am-11:45 am

1 stop25h 35m

$1,085

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. Dulles Intl Airport to Incheon 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 month to fly to Incheon Intl Airport?

The cheapest month to fly to Incheon Intl Airport from Washington, D.C. Dulles Intl Airport is in April. Flight prices, which tend to average around $1,262, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of April, then departing from Washington, D.C. Dulles Intl Airport during the month January is also very affordable. Most momondo users find prices during this month for around $1,382.

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport is on a Tuesday when prices can be found for as low as $1,328. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,622. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the evening is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport when you can find flight prices for as low as $1,169. Flying to Incheon Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,655 on average. Flights to Incheon Intl Airport from Washington, D.C. Dulles Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Washington, D.C. Dulles Intl to Incheon Intl flight route?

Fly from Washington, D.C. Dulles Intl to Incheon Intl for the best Washington, D.C. Dulles Intl - Incheon Intl flight prices

How far in advance should I book a flight to Incheon Intl Airport?

You are more likely to see cheaper flights to Incheon Intl Airport from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,751 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from Washington, D.C. Dulles Intl Airport for as low as $1,354 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Incheon Intl flights?

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to Incheon Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. Dulles Intl Airport to Incheon Intl Airport flight prices changed over time?

As of December 2025, prices for Washington, D.C. Dulles Intl Airport to Incheon Intl Airport flights are approximately 37% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to Incheon 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 Incheon 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 Incheon Intl Airport (IAD to ICN) flight deals and tips

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

Best Price Found

$562

Fastest flight time

15h 10m

Direct flights

Every day
The best one-way flight to Incheon Intl Airport from Washington, D.C. Dulles Intl Airport in the past 72 hours is $562. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport found on momondo in the last 72 hours is $1,092.
The fastest flight from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport takes 15h 10m
Direct flights go from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport every day.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Incheon Intl by plane?

    Incheon Intl is 6939.0 mi away from Washington, D.C. Dulles Intl. Typically, this will take 15h 10m by plane in normal conditions.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport.

  • What documentation or ID do you need to fly to Incheon Intl Airport?

    The travel and health documents you'll need for your trip to Incheon Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Incheon Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $317Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
DeltaPriceFrom $397Free CancellationRating
7.9
8,008 reviews
Search Delta flights
Air ChinaPriceFrom $591Free CancellationRating
7.1
129 reviews
Search Air China flights
Asiana AirlinesPriceFrom $759Free CancellationRating
8.2
493 reviews
Search Asiana Airlines flights
Turkish AirlinesPriceFrom $791Free CancellationRating
7.3
4,104 reviews
Search Turkish Airlines flights
American AirlinesPriceFrom $876Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
Air CanadaPriceFrom $945Free CancellationRating
7.1
10,531 reviews
Search Air Canada flights
Korean AirPriceFrom $1,573Free CancellationRating
8.4
1,186 reviews
Search Korean Air flights

  • Korean Air Flights From Washington, D.C. Dulles Intl Airport to Incheon Intl Airport

    Korean Air flight deals from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport start from $1,573 round-trip. Over the 7 Korean Air flights for this route in a normal week, average airfare is usually $1,964 round-trip - but some users have found much cheaper deals with momondo.

  • Delta Flights From Washington, D.C. Dulles Intl Airport to Incheon Intl Airport

    $397 is the best Delta flight deal from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport found on momondo over the last 72 hours. The average Delta ticket price found was closer to $1,905, however, with flight time and availability significantly affecting the price. Delta (7.9/10 from 8,009 user reviews) flies into Incheon Intl Airport from Washington, D.C. Dulles Intl Airport 7 times in an average week so prices can vary.

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Why should I use momondo to find a flight deal from Washington, D.C. to Seoul?

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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?

Once you have performed a search for Washington, D.C. to Seoul flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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Of course. momondo tracks the price of Washington, D.C. to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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