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Cheap flights from Incheon Intl Airport to Washington, D.C. from $365

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 1/29. 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.
Air Canada Logo
5:55 pm - 9:25 pmICN-IAD
41h 30m2 stops
Air Canada Logo
5:16 pm - 5:10 pmIAD-ICN
33h 54m2 stops
$471Air Canada
Find Deal
Fri, Dec 19 - Tue, Jan 6
Air Canada Logo
6:55 pm - 8:55 amICN-DCA
28h 00m2 stops
Air Canada Logo
6:50 pm - 5:10 pmDCA-ICN
32h 20m2 stops
$471Air Canada
Find Deal
Mon, Dec 15 - Thu, Jan 8
Air Canada Logo
6:55 pm - 11:23 amICN-IAD
30h 28m2 stops
Air Canada Logo
9:00 am - 6:25 pmIAD-ICN
19h 25m1 stop
$477Air Canada
Find Deal
Mon, Dec 15 - Sat, Jan 10
Air Canada Logo
8:10 pm - 8:55 amICN-DCA
26h 45m1 stop
Air Canada Logo
4:10 pm - 4:00 pmDCA-ICN
33h 50m2 stops
$477Air Canada
Find Deal
Mon, Dec 15 - Fri, Jan 9
Air Canada Logo
8:10 pm - 11:47 amICN-IAD
29h 37m2 stops
Air Canada Logo
4:30 pm - 5:10 pmIAD-ICN
34h 40m2 stops
$478Air Canada
Find Deal
Mon, Dec 22 - Thu, Jan 8
Air Canada Logo
8:10 pm - 12:19 pmICN-DCA
30h 09m2 stops
Air Canada Logo
6:50 pm - 5:10 pmDCA-ICN
32h 20m2 stops
$478Air Canada
Find Deal
Mon, Dec 22 - Thu, Jan 8
Air Canada Logo
6:55 pm - 11:35 amICN-IAD
30h 40m2 stops
Air Canada Logo
9:00 am - 6:25 pmIAD-ICN
19h 25m1 stop
$479Air Canada
Find Deal
Thu, Dec 18 - Sat, Jan 10
Air Canada Logo
6:55 pm - 3:31 pmICN-DCA
34h 36m2 stops
Air Canada Logo
9:40 am - 6:25 pmDCA-ICN
18h 45m1 stop
$479Air Canada
Find Deal
Thu, Dec 18 - Sat, Jan 10
United Airlines Logo
12:45 pm - 4:10 pmICN-BWI
41h 25m2 stops
United Airlines Logo
6:15 am - 3:00 pmBWI-ICN
19h 45m1 stop
$493United Airlines
Find Deal
Tue, Feb 24 - Sun, Mar 29
United Airlines Logo
12:45 pm - 5:16 pmICN-BWI
18h 31m1 stop
United Airlines Logo
8:42 am - 5:40 amBWI-ICN
30h 58m1 stop
$497United Airlines
Find Deal
Tue, Dec 16 - Sat, Jan 10

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

Our best Air Canada deals on Incheon Intl Airport to Washington, D.C. flight tickets
Air Canada
Dec 19
ICN5:55 pmIncheon Intl
41h 30m
2 stops
IAD9:25 pmWashington, D.C. Dulles Intl
Jan 6
IAD5:16 pmWashington, D.C. Dulles Intl
33h 54m
2 stops
ICN5:10 pmIncheon Intl
$471
Find similar
Air Canada
Dec 15
ICN6:55 pmIncheon Intl
30h 28m
2 stops
IAD11:23 amWashington, D.C. Dulles Intl
Jan 10
IAD9:00 amWashington, D.C. Dulles Intl
19h 25m
1 stop
ICN6:25 pmIncheon Intl
$477
Find similar
Air Canada
Dec 22
ICN8:10 pmIncheon Intl
29h 37m
2 stops
IAD11:47 amWashington, D.C. Dulles Intl
Jan 5
IAD4:30 pmWashington, D.C. Dulles Intl
33h 30m
2 stops
ICN4:00 pmIncheon Intl
$478
Find similar

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

Our best United Airlines deals on Incheon Intl Airport to Washington, D.C. flight tickets
United Airlines
May 1
ICN4:50 pmIncheon Intl
31h 53m
2 stops
IAD11:43 amWashington, D.C. Dulles Intl
May 9
IAD10:10 pmWashington, D.C. Dulles Intl
41h 10m
1 stop
ICN4:20 amIncheon Intl
$493
Find similar
United Airlines
Dec 15
ICN6:00 pmIncheon Intl
20h 56m
1 stop
IAD12:56 amWashington, D.C. Dulles Intl
Jan 6
IAD8:25 amWashington, D.C. Dulles Intl
31h 15m
1 stop
ICN5:40 amIncheon Intl
$497
Find similar
United Airlines
Dec 25
ICN6:00 pmIncheon Intl
25h 22m
1 stop
IAD5:22 amWashington, D.C. Dulles Intl
Jan 8
IAD10:20 pmWashington, D.C. Dulles Intl
27h 55m
1 stop
ICN4:15 pmIncheon Intl
$498
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport to Washington, D.C. 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 November 18, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 12/19

5:55 pm-9:25 pm

2 stops41h 30m

Washington, D.C. Dulles Intl

Tue 1/6

5:16 pm-5:10 pm

2 stops33h 54m

$471

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Mon 12/15

6:55 pm-8:55 am

2 stops28h 00m

Washington, D.C. Reagan-National

Thu 1/8

6:50 pm-5:10 pm

2 stops32h 20m

$471

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 12/15

6:55 pm-11:23 am

2 stops30h 28m

Washington, D.C. Dulles Intl

Sat 1/10

9:00 am-6:25 pm

1 stop19h 25m

$477

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Mon 12/15

8:10 pm-8:55 am

1 stop26h 45m

Washington, D.C. Reagan-National

Fri 1/9

4:10 pm-4:00 pm

2 stops33h 50m

$477

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 12/22

8:10 pm-11:47 am

2 stops29h 37m

Washington, D.C. Dulles Intl

Thu 1/8

4:30 pm-5:10 pm

2 stops34h 40m

$478

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Mon 12/22

8:10 pm-12:19 pm

2 stops30h 09m

Washington, D.C. Reagan-National

Thu 1/8

6:50 pm-5:10 pm

2 stops32h 20m

$478

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 12/18

6:55 pm-11:35 am

2 stops30h 40m

Washington, D.C. Dulles Intl

Sat 1/10

9:00 am-6:25 pm

1 stop19h 25m

$479

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Thu 12/18

6:55 pm-3:31 pm

2 stops34h 36m

Washington, D.C. Reagan-National

Sat 1/10

9:40 am-6:25 pm

1 stop18h 45m

$479

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Tue 2/24

12:45 pm-4:10 pm

2 stops41h 25m

Baltimore/Washington

Sun 3/29

6:15 am-3:00 pm

1 stop19h 45m

$493

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Tue 12/16

12:45 pm-5:16 pm

1 stop18h 31m

Baltimore/Washington

Sat 1/10

8:42 am-5:40 am

1 stop30h 58m

$497

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 Washington, D.C. from

How to get the cheapest flight ticket from Incheon Intl Airport to Washington, D.C.

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.?

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

The month of October is, on average, the cheapest month to fly to Washington, D.C. from Incheon Intl Airport, with most prices found around $726. If you’re not able to fly to Washington, D.C. in October, then March is your next best option. Flight prices from Incheon Intl Airport to Washington, D.C. during March average around $800.

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

On average, the least expensive day to fly to Washington, D.C. from Incheon Intl Airport is on a Sunday. momondo users have found tickets for Sunday departures for as low as $1,502. However, this price may fluctuate depending on the airline, the season, and holidays. 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. for around $1,646.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the afternoon is the cheapest time of day to fly from Incheon Intl Airport to Washington, D.C. when you can find flight prices for as low as $919. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $1,526. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $1,259 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Incheon Intl Airport for as low as $954 on momondo.

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

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

Can stopping save me money on Incheon Intl Airport to Washington, D.C. flights?

You could potentially save up to 29% on your flight if you consider stops on a Incheon Intl Airport to Washington, D.C. flight.

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

As of November 2025, prices for Incheon Intl Airport to Washington, D.C. flights are approximately 15% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Incheon Intl Airport to Washington, D.C. 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. (ICN to WAS) flight deals and tips

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

Best Price Found

$1,077

Fastest flight time

13h 35m

Direct flights

Every day

Airports in Washington, D.C.

1 airport
The best one-way flight to Washington, D.C. from Incheon Intl Airport in the past 72 hours is $1,077. The best round-trip flight deal from Incheon Intl Airport to Washington, D.C. found on momondo in the last 72 hours is $1,418.
The fastest flight from Incheon Intl Airport to Washington, D.C. takes 13h 35m
Direct flights go from Incheon Intl Airport to Washington, D.C. every day.
There is 1 airport near Washington, D.C.: Washington, D.C. Dulles Intl (IAD)
Search flight deals

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

    The distance between Incheon Intl and Washington, D.C. is about 6949.0 mi. By plane, this route typically takes 16h 25m.

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

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

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

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

    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..

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

    The travel and health documents you'll need for your trip to Washington, D.C. 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 Washington, D.C.. 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 Incheon Intl Airport to Washington, D.C.?

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

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

Compare and see reviews for airlines that fly from Incheon Intl Airport to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $501Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
United AirlinesPriceFrom $508Free CancellationRating
7.4
9,016 reviews
Search United Airlines flights
DeltaPriceFrom $649Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Air CanadaPriceFrom $688Free CancellationRating
7.1
10,459 reviews
Search Air Canada flights
Korean AirPriceFrom $1,185Free CancellationRating
8.4
1,167 reviews
Search Korean Air flights

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

    Korean Air flies from Incheon Intl Airport to Washington, D.C. around 7 times per week, with 1,167 momondo users rating the airline 8.4/10. The cheapest Korean Air deal from Incheon Intl Airport to Washington, D.C. in the last 72 hours was $1,185 (round-trip), much lower than the average airfare cost of $1,406 for Korean Air flights on this route.

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

    Another popular option for Incheon Intl Airport to Washington, D.C. flights is Delta (7.9/10, 8,007 ratings). Delta flies from Incheon Intl Airport to Washington, D.C. around 7 times per week, with deals starting from $649 round-trip and rising to an average price of around $1,520.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie
Linthicum Heights
Springfield

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seoul to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Seoul with this policy.

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

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

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

Yes. momondo can track prices for Seoul to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport