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Cheap flights from Incheon Intl Airport to Washington, D.C. from $361

This is the cheapest round-trip 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 10/22. 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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Cheap round-trip flights

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Air Canada Logo
5:45 pm - 10:20 amICN-DCA
29h 35m2 stops
Air Canada Logo
6:50 pm - 5:10 pmDCA-ICN
33h 20m2 stops
$361Air Canada
Find Deal
Wed, Oct 22 - Sat, Nov 1
Air Canada Logo
7:05 pm - 10:34 pmICN-DCA
16h 29m1 stop
Air Canada Logo
6:50 pm - 5:10 pmDCA-ICN
33h 20m2 stops
$380Air Canada
Find Deal
Wed, Oct 22 - Sat, Nov 1
American Airlines Logo
5:45 pm - 2:57 pmICN-DCA
34h 12m2 stops
American Airlines Logo
5:00 am - 3:30 pmDCA-ICN
21h 30m1 stop
$468American Airlines
Find Deal
Wed, Oct 15 - Mon, Oct 20
American Airlines Logo
5:45 pm - 10:54 pmICN-BWI
18h 09m1 stop
American Airlines Logo
6:14 am - 3:30 pmBWI-ICN
20h 16m1 stop
$486American Airlines
Find Deal
Wed, Oct 15 - Mon, Oct 20
United Airlines Logo
12:45 pm - 11:58 pmICN-BWI
25h 13m2 stops
United Airlines Logo
8:42 am - 4:15 pmBWI-ICN
41h 33m1 stop
$500United Airlines
Find Deal
Thu, Dec 25 - Wed, Jan 7
United Airlines Logo
12:45 pm - 8:55 pmICN-IAD
22h 10m1 stop
United Airlines Logo
10:10 pm - 4:15 pmIAD-ICN
28h 05m2 stops
$500United Airlines
Find Deal
Thu, Dec 25 - Mon, Jan 5
Delta Logo
7:30 pm - 11:32 pmICN-BWI
18h 02m1 stop
Delta Logo
6:00 am - 4:50 pmBWI-ICN
20h 50m1 stop
$644Delta
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Wed, Dec 24 - Sun, Jan 4
Delta Logo
7:25 pm - 12:11 amICN-BWI
18h 46m1 stop
Delta Logo
6:19 am - 3:30 pmBWI-ICN
20h 11m1 stop
$645Delta
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Wed, Feb 11 - Mon, Mar 9
Korean Air Logo
4:25 pm - 8:43 pmICN-BWI
17h 18m1 stop
Korean Air Logo
6:22 pm - 2:10 pmBWI-ICN
30h 48m1 stop
$797Korean Air
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Mon, Oct 13 - Mon, Oct 20
Korean Air Logo
6:00 pm - 12:55 pmICN-BWI
32h 55m1 stop
Korean Air Logo
6:00 am - 4:50 pmBWI-ICN
20h 50m1 stop
$942Korean Air
Find Deal
Mon, Dec 29 - Thu, Jan 8

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

Our best Alaska Airlines deals on Incheon Intl Airport to Washington, D.C. flight tickets
Alaska Airlines
Feb 23
ICN8:35 pmIncheon Intl
35h 20m
1 stop
IAD5:55 pmWashington, D.C. Dulles Intl
Feb 28
IAD6:55 pmWashington, D.C. Dulles Intl
33h 40m
1 stop
ICN6:35 pmIncheon Intl
$606
Find similar
Alaska Airlines
Oct 22
ICN9:25 pmIncheon Intl
39h 58m
2 stops
IAD12:23 amWashington, D.C. Dulles Intl
Nov 1
IAD7:43 amWashington, D.C. Dulles Intl
46h 42m
2 stops
ICN7:25 pmIncheon Intl
$732
Find similar
Alaska Airlines
Feb 23
ICN8:35 pmIncheon Intl
23h 20m
1 stop
IAD5:55 amWashington, D.C. Dulles Intl
Feb 28
IAD5:51 pmWashington, D.C. Dulles Intl
34h 44m
2 stops
ICN6:35 pmIncheon Intl
$734
Find similar

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

Our best American Airlines deals on Incheon Intl Airport to Washington, D.C. flight tickets
American Airlines
Oct 15
ICN5:45 pmIncheon Intl
34h 12m
2 stops
DCA2:57 pmWashington, D.C. Reagan-National
Oct 20
DCA5:00 amWashington, D.C. Reagan-National
21h 30m
1 stop
ICN3:30 pmIncheon Intl
$468
Find similar
American Airlines
Oct 15
ICN5:45 pmIncheon Intl
18h 06m
1 stop
IAD10:51 pmWashington, D.C. Dulles Intl
Oct 20
IAD6:11 amWashington, D.C. Dulles Intl
20h 19m
1 stop
ICN3:30 pmIncheon Intl
$486
Find similar
American Airlines
Nov 2
ICN7:15 pmIncheon Intl
32h 20m
2 stops
IAD1:35 pmWashington, D.C. Dulles Intl
Nov 7
IAD6:04 amWashington, D.C. Dulles Intl
20h 41m
1 stop
ICN4:45 pmIncheon Intl
$487
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 October 2, 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 - DCA

ICNDCA

Incheon Intl

Wed 10/22

5:45 pm-10:20 am

2 stops29h 35m

Washington, D.C. Reagan-National

Sat 11/1

6:50 pm-5:10 pm

2 stops33h 20m

$361

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 10/22

7:05 pm-10:34 pm

1 stop16h 29m

Washington, D.C. Reagan-National

Sat 11/1

6:50 pm-5:10 pm

2 stops33h 20m

$380

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 10/15

5:45 pm-2:57 pm

2 stops34h 12m

Washington, D.C. Reagan-National

Mon 10/20

5:00 am-3:30 pm

1 stop21h 30m

$468

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 10/15

5:45 pm-10:54 pm

1 stop18h 09m

Baltimore/Washington

Mon 10/20

6:14 am-3:30 pm

1 stop20h 16m

$486

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Thu 12/25

12:45 pm-11:58 pm

2 stops25h 13m

Baltimore/Washington

Wed 1/7

8:42 am-4:15 pm

1 stop41h 33m

$500

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 12/25

12:45 pm-8:55 pm

1 stop22h 10m

Washington, D.C. Dulles Intl

Mon 1/5

10:10 pm-4:15 pm

2 stops28h 05m

$500

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 12/24

7:30 pm-11:32 pm

1 stop18h 02m

Baltimore/Washington

Sun 1/4

6:00 am-4:50 pm

1 stop20h 50m

$644

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 2/11

7:25 pm-12:11 am

1 stop18h 46m

Baltimore/Washington

Mon 3/9

6:19 am-3:30 pm

1 stop20h 11m

$645

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Mon 10/13

4:25 pm-8:43 pm

1 stop17h 18m

Baltimore/Washington

Mon 10/20

6:22 pm-2:10 pm

1 stop30h 48m

$797

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Mon 12/29

6:00 pm-12:55 pm

1 stop32h 55m

Baltimore/Washington

Thu 1/8

6:00 am-4:50 pm

1 stop20h 50m

$942

Flights are sorted by cheapest round-trip flights 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 December is, on average, the cheapest month to fly to Washington, D.C. from Incheon Intl Airport, with most prices found around $899. If you’re not able to fly to Washington, D.C. in December, then February is your next best option. Flight prices from Incheon Intl Airport to Washington, D.C. during February average around $922.

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 Saturday. momondo users have found tickets for Saturday departures for as low as $1,371. 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 $1,514. 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 $1,355 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 15% 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 October 2025, prices for Incheon Intl Airport to Washington, D.C. flights are approximately 31% cheaper 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

$1,116

Fastest flight time

13h 30m

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 $1,116. The best round-trip flight deal from Incheon Intl Airport to Washington, D.C. found on momondo in the last 72 hours is $1,339.
The fastest flight from Incheon Intl Airport to Washington, D.C. takes 13h 30m
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
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $530Free CancellationRating
7.4
8,933 reviews
Search United Airlines flights
DeltaPriceFrom $649Free CancellationRating
7.9
7,962 reviews
Search Delta flights
Air CanadaPriceFrom $688Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Korean AirPriceFrom $1,184Free CancellationRating
8.4
1,145 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 1,145 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 $1,184 (round-trip), much lower than the average airfare cost of $1,404 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, 7,962 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 $1,515.

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

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