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Cheap flights from Incheon Intl Airport to Washington, D.C. from $470

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to Washington, D.C. departing on 4/21. 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 Incheon Intl Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:30 am - 10:19 pm
ICN
-
IAD
23h 49m
1 stop
United Airlines Logo
5:41 pm - 4:20 am
IAD
-
ICN
21h 39m
2 stops
$643United Airlines
Tue, Jun 9 - Mon, Sep 7
Alaska Airlines Logo
7:35 pm - 11:59 pm
ICN
-
IAD
17h 24m
1 stop
Alaska Airlines Logo
9:00 am - 5:30 pm
IAD
-
ICN
19h 30m
1 stop
$653Alaska Airlines
Thu, Jun 4 - Sun, Sep 6
Alaska Airlines Logo
7:35 pm - 11:59 pm
ICN
-
IAD
17h 24m
1 stop
Alaska Airlines Logo
5:38 pm - 5:30 pm
IAD
-
ICN
34h 52m
1 stop
$675Alaska Airlines
Thu, Jun 4 - Tue, Sep 1
United Airlines Logo
11:30 am - 12:55 am
ICN
-
IAD
26h 25m
1 stop
United Airlines Logo
10:23 pm - 3:00 pm
IAD
-
ICN
27h 37m
2 stops
$676United Airlines
Mon, Jun 8 - Fri, Sep 4
United Airlines Logo
11:30 am - 5:53 am
ICN
-
IAD
31h 23m
1 stop
United Airlines Logo
10:10 pm - 3:20 pm
IAD
-
ICN
28h 10m
2 stops
$707United Airlines
Mon, Jun 8 - Sun, Sep 20
United Airlines Logo
11:30 am - 12:55 am
ICN
-
IAD
26h 25m
1 stop
United Airlines Logo
3:02 pm - 4:20 am
IAD
-
ICN
24h 18m
2 stops
$709United Airlines
Mon, Jun 8 - Wed, Sep 16
Asiana Airlines Logo
11:30 am - 12:55 am
ICN
-
IAD
26h 25m
1 stop
Asiana Airlines Logo
10:10 pm - 3:20 pm
IAD
-
ICN
28h 10m
1 stop
$720Asiana Airlines
Mon, Jun 8 - Wed, Sep 30
United Airlines Logo
11:30 am - 12:55 am
ICN
-
IAD
26h 25m
1 stop
United Airlines Logo
8:21 pm - 3:00 pm
IAD
-
ICN
29h 39m
1 stop
$745United Airlines
Fri, May 29 - Sat, Aug 1
United Airlines Logo
4:50 pm - 10:18 pm
ICN
-
IAD
18h 28m
1 stop
United Airlines Logo
6:30 am - 3:00 pm
IAD
-
ICN
19h 30m
1 stop
$748United Airlines
Tue, Apr 21 - Mon, Apr 27
Alaska Airlines Logo
7:35 pm - 4:26 pm
ICN
-
IAD
33h 51m
1 stop
Alaska Airlines Logo
9:00 am - 5:30 pm
IAD
-
ICN
19h 30m
1 stop
$755Alaska Airlines
Mon, Sep 7 - Fri, Sep 18

AIR PREMIA flights from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport

Our best AIR PREMIA deals on Incheon Intl Airport to Washington, D.C. Dulles Intl Airport flight tickets
AIR PREMIA
Apr 24
ICN10:00 amIncheon Intl
13h 50m
IAD10:50 amWashington, D.C. Dulles Intl
Jul 17
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
ICN5:55 pmIncheon Intl
$801
AIR PREMIA
Apr 27
ICN10:00 amIncheon Intl
13h 50m
IAD10:50 amWashington, D.C. Dulles Intl
May 18
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
ICN5:55 pmIncheon Intl
$803
AIR PREMIA
Apr 27
ICN10:00 amIncheon Intl
13h 50m
IAD10:50 amWashington, D.C. Dulles Intl
May 18
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
ICN5:55 pmIncheon Intl
$805

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

Our best Alaska Airlines deals on Incheon Intl Airport to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Jun 4
ICN7:35 pmIncheon Intl
17h 24m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
Sep 6
IAD9:00 amWashington, D.C. Dulles Intl
19h 30m
1 stop
ICN5:30 pmIncheon Intl
$653
Alaska Airlines
Jun 4
ICN7:35 pmIncheon Intl
17h 24m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
Sep 1
IAD5:38 pmWashington, D.C. Dulles Intl
34h 52m
1 stop
ICN5:30 pmIncheon Intl
$675
Alaska Airlines
Sep 7
ICN7:35 pmIncheon Intl
33h 51m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
Sep 18
IAD9:00 amWashington, D.C. Dulles Intl
19h 30m
1 stop
ICN5:30 pmIncheon Intl
$755

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport to Washington, D.C. Dulles 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 March 23, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 6/9

11:30 am-10:19 pm

1 stop23h 49m

Washington, D.C. Dulles Intl

Mon 9/7

5:41 pm-4:20 am

2 stops21h 39m

$643
Quickest round-trip

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 6/4

7:35 pm-11:59 pm

1 stop17h 24m

Washington, D.C. Dulles Intl

Sun 9/6

9:00 am-5:30 pm

1 stop19h 30m

$653

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 6/4

7:35 pm-11:59 pm

1 stop17h 24m

Washington, D.C. Dulles Intl

Tue 9/1

5:38 pm-5:30 pm

1 stop34h 52m

$675

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 6/8

11:30 am-12:55 am

1 stop26h 25m

Washington, D.C. Dulles Intl

Fri 9/4

10:23 pm-3:00 pm

2 stops27h 37m

$676

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 6/8

11:30 am-5:53 am

1 stop31h 23m

Washington, D.C. Dulles Intl

Sun 9/20

10:10 pm-3:20 pm

2 stops28h 10m

$707

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 6/8

11:30 am-12:55 am

1 stop26h 25m

Washington, D.C. Dulles Intl

Wed 9/16

3:02 pm-4:20 am

2 stops24h 18m

$709

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 6/8

11:30 am-12:55 am

1 stop26h 25m

Washington, D.C. Dulles Intl

Wed 9/30

10:10 pm-3:20 pm

1 stop28h 10m

$720

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 5/29

11:30 am-12:55 am

1 stop26h 25m

Washington, D.C. Dulles Intl

Sat 8/1

8:21 pm-3:00 pm

1 stop29h 39m

$745

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 4/21

4:50 pm-10:18 pm

1 stop18h 28m

Washington, D.C. Dulles Intl

Mon 4/27

6:30 am-3:00 pm

1 stop19h 30m

$748

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 9/7

7:35 pm-4:26 pm

1 stop33h 51m

Washington, D.C. Dulles Intl

Fri 9/18

9:00 am-5:30 pm

1 stop19h 30m

$755

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 Incheon Intl Airport to Washington, D.C. Dulles 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 typical price of a round-trip flight between Incheon Intl Airport and Washington, D.C. Dulles Intl Airport?

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, November is the cheapest month to fly from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $594. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $1,047.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Sunday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $1,334. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport for around $1,648.

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

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $1,313 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport for as low as $865 on momondo.

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

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

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

As of March 2026, prices for Incheon Intl Airport to Washington, D.C. Dulles Intl Airport flights are approximately 135% more expensive when compared to flights at the same time last year.

When to book flights from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Incheon Intl Airport to Washington, D.C. Dulles Intl Airport (ICN to IAD) flight deals and tips

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

Best Price Found

$628

Fastest flight time

13h 50m

Direct flights

Mon, Tue, Thu and Sat
The best one-way flight to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport in the past 72 hours is $628. The best round-trip flight deal from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $898.
The fastest flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport takes 13h 50m
Direct flights go from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport on Monday, Tuesday, Thursday and Saturday. There are no airlines offering direct flights.
Search flight deals

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

    Washington, D.C. Dulles Intl is 6939.0 mi away from Incheon Intl. By plane, this route typically takes 13h 50m.

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

    Prices for flights from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $501Free CancellationRating
7.1
11,486 reviews
Search American Airlines flights
United AirlinesPriceFrom $508Free CancellationRating
7.4
9,462 reviews
Search United Airlines flights
AIR PREMIAPriceFrom $876Free CancellationRating
8.2
83 reviews
Search AIR PREMIA flights
Korean AirPriceFrom $1,095Free CancellationRating
8.4
1,202 reviews
Search Korean Air flights
DeltaPriceFrom $1,254Free CancellationRating
7.9
8,318 reviews
Search Delta flights

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

    Korean Air is one of the most popular airlines flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport, operating 7 flights/week on average for this route. A good Korean Air flight deal for Incheon Intl Airport to Washington, D.C. Dulles Intl Airport starts from $1,095 round-trip, up to an average price of $1,564. Our users have rated Korean Air at 8.4/10.

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

    Delta is also a popular choice for this route. Delta flight deals for Incheon Intl Airport to Washington, D.C. Dulles Intl Airport start from as low as $1,254 round-trip, depending on your selected dates, with average Delta deals seen on momondo around $1,615. Delta operates 7 flights to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport in an average week. Users have rated it 7.9/10 across 8,319 reviews.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
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Can I find flights from Seoul to Washington, D.C. with flexible booking policies on momondo?

Flights from Seoul to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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