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Cheap flights from Washington, D.C. to Seoul from $409

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. to Seoul departing on 11/15. 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

Enter your travel dates to find the best prices.
United Airlines Logo
6:35 pm - 5:40 amBWI-ICN
21h 05m1 stop
United Airlines Logo
12:45 pm - 5:28 pmICN-BWI
18h 43m1 stop
$940United Airlines
Find Deal
Mon, Nov 10 - Tue, Nov 18
United Airlines Logo
6:35 pm - 5:40 amBWI-ICN
21h 05m1 stop
United Airlines Logo
12:45 pm - 7:21 pmICN-BWI
20h 36m2 stops
$944United Airlines
Find Deal
Sun, Nov 9 - Wed, Nov 12
Turkish Airlines Logo
1:30 pm - 6:20 pmIAD-ICN
38h 50m1 stop
Turkish Airlines Logo
12:10 am - 12:45 pmICN-IAD
25h 35m1 stop
$1,010Turkish Airlines
Find Deal
Sun, Mar 1 - Mon, Mar 23
Turkish Airlines Logo
1:30 pm - 6:20 pmIAD-ICN
38h 50m1 stop
Turkish Airlines Logo
12:10 am - 7:20 pmICN-IAD
33h 10m1 stop
$1,012Turkish Airlines
Find Deal
Fri, Jan 23 - Thu, Feb 5
Delta Logo
10:27 am - 5:45 amBWI-ICN
29h 18m1 stop
Delta Logo
7:40 pm - 6:03 amICN-BWI
23h 23m1 stop
$1,021Delta
Find Deal
Wed, Nov 12 - Wed, Apr 22
American Airlines Logo
6:02 am - 4:45 pmBWI-ICN
20h 43m1 stop
American Airlines Logo
5:25 pm - 9:42 amICN-BWI
29h 17m2 stops
$1,025American Airlines
Find Deal
Wed, Nov 12 - Wed, Apr 22
Delta Logo
6:25 pm - 3:50 pmBWI-ICN
31h 25m1 stop
Delta Logo
7:40 pm - 5:58 amICN-BWI
24h 18m1 stop
$1,027Delta
Find Deal
Sat, Nov 15 - Fri, Nov 28
Air Canada Logo
11:05 am - 4:00 pmDCA-ICN
38h 55m2 stops
Air Canada Logo
6:55 pm - 10:21 amICN-DCA
29h 26m2 stops
$1,038Air Canada
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Wed, Dec 10 - Tue, Dec 16
Air Canada Logo
9:45 am - 4:00 pmIAD-ICN
40h 15m2 stops
Air Canada Logo
6:55 pm - 11:23 amICN-IAD
30h 28m2 stops
$1,038Air Canada
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Wed, Dec 10 - Tue, Dec 16
American Airlines Logo
6:17 am - 4:45 pmBWI-ICN
20h 28m1 stop
American Airlines Logo
5:25 pm - 12:25 amICN-BWI
20h 00m2 stops
$1,074American Airlines
Find Deal
Wed, Feb 4 - Wed, May 6

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

Our best Alaska Airlines deals on Washington, D.C. to Incheon Intl Airport flight tickets
Alaska Airlines
Jan 10
DCA6:56 pmWashington, D.C. Reagan-National
33h 39m
2 stops
ICN6:35 pmIncheon Intl
Jan 19
ICN8:35 pmIncheon Intl
35h 21m
2 stops
DCA5:56 pmWashington, D.C. Reagan-National
$1,115
Find similar
Alaska Airlines
Jan 10
DCA6:56 pmWashington, D.C. Reagan-National
33h 39m
2 stops
ICN6:35 pmIncheon Intl
Jan 19
ICN8:35 pmIncheon Intl
35h 21m
2 stops
DCA5:56 pmWashington, D.C. Reagan-National
$1,116
Find similar
Alaska Airlines
Jan 8
DCA6:56 pmWashington, D.C. Reagan-National
33h 39m
2 stops
ICN6:35 pmIncheon Intl
Jan 19
ICN8:35 pmIncheon Intl
35h 21m
2 stops
DCA5:56 pmWashington, D.C. Reagan-National
$1,134
Find similar

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

Our best Turkish Airlines deals on Washington, D.C. to Incheon Intl Airport flight tickets
Turkish Airlines
Mar 1
IAD1:30 pmWashington, D.C. Dulles Intl
38h 50m
1 stop
ICN6:20 pmIncheon Intl
Mar 23
ICN12:10 amIncheon Intl
25h 35m
1 stop
IAD12:45 pmWashington, D.C. Dulles Intl
$1,010
Find similar
Turkish Airlines
Jan 23
IAD1:30 pmWashington, D.C. Dulles Intl
38h 50m
1 stop
ICN6:20 pmIncheon Intl
Feb 5
ICN12:10 amIncheon Intl
33h 10m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$1,012
Find similar
Turkish Airlines
Jan 22
IAD9:15 pmWashington, D.C. Dulles Intl
21h 50m
1 stop
ICN9:05 amIncheon Intl
Feb 9
ICN10:45 amIncheon Intl
39h 00m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$1,016
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 October 30, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Mon 11/10

6:35 pm-5:40 am

1 stop21h 05m

Incheon Intl

Tue 11/18

12:45 pm-5:28 pm

1 stop18h 43m

$940

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Sun 11/9

6:35 pm-5:40 am

1 stop21h 05m

Incheon Intl

Wed 11/12

12:45 pm-7:21 pm

2 stops20h 36m

$944

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sun 3/1

1:30 pm-6:20 pm

1 stop38h 50m

Incheon Intl

Mon 3/23

12:10 am-12:45 pm

1 stop25h 35m

$1,010

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 1/23

1:30 pm-6:20 pm

1 stop38h 50m

Incheon Intl

Thu 2/5

12:10 am-7:20 pm

1 stop33h 10m

$1,012

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 11/12

10:27 am-5:45 am

1 stop29h 18m

Incheon Intl

Wed 4/22

7:40 pm-6:03 am

1 stop23h 23m

$1,021

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 11/12

6:02 am-4:45 pm

1 stop20h 43m

Incheon Intl

Wed 4/22

5:25 pm-9:42 am

2 stops29h 17m

$1,025

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Sat 11/15

6:25 pm-3:50 pm

1 stop31h 25m

Incheon Intl

Fri 11/28

7:40 pm-5:58 am

1 stop24h 18m

$1,027

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Wed 12/10

11:05 am-4:00 pm

2 stops38h 55m

Incheon Intl

Tue 12/16

6:55 pm-10:21 am

2 stops29h 26m

$1,038

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 12/10

9:45 am-4:00 pm

2 stops40h 15m

Incheon Intl

Tue 12/16

6:55 pm-11:23 am

2 stops30h 28m

$1,038

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 2/4

6:17 am-4:45 pm

1 stop20h 28m

Incheon Intl

Wed 5/6

5:25 pm-12:25 am

2 stops20h 00m

$1,074

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 Seoul from

How to get the cheapest flight ticket from Washington, D.C. 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. is in January. Flight prices, which tend to average around $965, 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 January, then departing from Washington, D.C. during the month February is also very affordable. Most momondo users find prices during this month for around $1,072.

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

The cheapest day to depart from Washington, D.C. to Incheon Intl Airport is on a Tuesday when prices can be found for as low as $1,399. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,613. 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. 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. 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. to Incheon Intl flight route?

Fly from Washington, D.C. Dulles Intl to Incheon Intl for the best Washington, D.C. - 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. when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,714 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. for as low as $1,325 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. to Incheon Intl 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 Washington, D.C. to Incheon Intl Airport flights?

You could potentially save up to 3% on your flight if you consider stops on a Washington, D.C. to Incheon Intl Airport flight.

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

As of October 2025, prices for Washington, D.C. to Incheon Intl Airport flights are approximately 29% cheaper when compared to flights at the same time last year.

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

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

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

Best Price Found

$632

Fastest flight time

15h 25m

Direct flights

Every day
The best one-way flight to Incheon Intl Airport from Washington, D.C. in the past 72 hours is $632. The best round-trip flight deal from Washington, D.C. to Incheon Intl Airport found on momondo in the last 72 hours is $1,239.
The fastest flight from Washington, D.C. to Incheon Intl Airport takes 15h 25m
Direct flights go from Washington, D.C. to Incheon Intl Airport every day.
Search flight deals

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

    The straight-line distance from Washington, D.C. to Incheon Intl is 6949.0 mi. Flights usually cover this in 19h 25m, depending on flying conditions and air traffic around both airports.

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

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

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

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

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

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

Compare and see reviews for airlines that fly from Washington, D.C. to Incheon Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $317Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
DeltaPriceFrom $407Free CancellationRating
7.9
7,998 reviews
Search Delta flights
Air ChinaPriceFrom $591Free CancellationRating
7.1
119 reviews
Search Air China flights
American AirlinesPriceFrom $716Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights
Asiana AirlinesPriceFrom $759Free CancellationRating
8.2
484 reviews
Search Asiana Airlines flights
Turkish AirlinesPriceFrom $791Free CancellationRating
7.3
4,031 reviews
Search Turkish Airlines flights
Air CanadaPriceFrom $864Free CancellationRating
7.1
10,381 reviews
Search Air Canada flights
Korean AirPriceFrom $1,059Free CancellationRating
8.4
1,155 reviews
Search Korean Air flights

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

    Across 4 Korean Air flights from Washington, D.C. to Incheon Intl Airport this week, the average price was $1,701, with the best Korean Air deals starting from $1,059 round-trip. 1,155 users have rated Korean Air on momondo, with an average score of 8.4/10.

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

    $407 is the best Delta flight deal from Washington, D.C. to Incheon Intl Airport found on momondo over the last 72 hours. The average Delta ticket price found was closer to $1,612, however, with flight time and availability significantly affecting the price. Delta (7.9/10 from 7,998 user reviews) flies into Incheon Intl Airport from Washington, D.C. 4 times in an average week so prices can vary.

Traveling to a place near Seoul?

Book flights to Seoul if you plan to visit one of these locations
Suwon
Seongnam
Daejeon
Anyang

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Seoul. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Seoul from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Washington, D.C. and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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 can track prices for Washington, D.C. to Seoul 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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