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Cheap flights from Washington, D.C. to Seoul from $372

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 11/8. 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

Multiple Airlines Logo
8:26 pm - 4:10 pmBWI-ICN
29h 44m1 stop
Multiple Airlines Logo
9:25 pm - 7:23 amICN-BWI
23h 58m2 stops
$802Multiple Airlines
Find Deal
Sat, Nov 8 - Sat, Nov 15
Multiple Airlines Logo
5:35 am - 4:50 amBWI-ICN
34h 15m1 stop
Multiple Airlines Logo
8:45 pm - 3:37 pmICN-BWI
31h 52m2 stops
$803Multiple Airlines
Find Deal
Fri, Oct 17 - Fri, Oct 24
Multiple Airlines Logo
5:35 am - 4:50 amBWI-ICN
34h 15m1 stop
Multiple Airlines Logo
9:25 pm - 7:19 pmICN-BWI
35h 54m2 stops
$808Multiple Airlines
Find Deal
Mon, Oct 20 - Mon, Nov 10
Multiple Airlines Logo
5:35 am - 4:50 amBWI-ICN
34h 15m1 stop
Multiple Airlines Logo
9:15 pm - 10:36 pmICN-BWI
38h 21m2 stops
$811Multiple Airlines
Find Deal
Mon, Oct 20 - Sun, Oct 26
Air Canada Logo
5:15 pm - 4:05 pmIAD-ICN
33h 50m2 stops
Air Canada Logo
5:45 pm - 9:38 amICN-IAD
28h 53m2 stops
$950Air Canada
Find Deal
Sat, Oct 4 - Tue, Oct 14
Air Canada Logo
9:45 am - 5:10 pmIAD-ICN
41h 25m2 stops
Air Canada Logo
6:55 pm - 4:21 pmICN-IAD
35h 26m2 stops
$959Air Canada
Find Deal
Wed, Nov 5 - Wed, Nov 12
Turkish Airlines Logo
9:40 pm - 5:40 pmIAD-ICN
31h 00m1 stop
Turkish Airlines Logo
12:10 am - 12:45 pmICN-IAD
25h 35m1 stop
$1,011Turkish Airlines
Find Deal
Wed, Oct 22 - Mon, Oct 27
China Eastern Logo
12:09 pm - 11:55 amIAD-ICN
33h 46m2 stops
China Eastern Logo
8:55 am - 7:08 pmICN-IAD
24h 13m2 stops
$1,021China Eastern
Find Deal
Wed, Nov 5 - Tue, Nov 11
Turkish Airlines Logo
10:10 pm - 6:20 pmIAD-ICN
31h 10m1 stop
Turkish Airlines Logo
12:10 am - 11:45 amICN-IAD
25h 35m1 stop
$1,029Turkish Airlines
Find Deal
Tue, Oct 28 - Wed, Nov 5
China Eastern Logo
6:05 am - 11:55 amDCA-ICN
39h 50m2 stops
China Eastern Logo
8:55 am - 6:00 pmICN-DCA
23h 05m2 stops
$1,050China Eastern
Find Deal
Mon, Nov 3 - Tue, Nov 18

Cathay Pacific flights from Washington, D.C. to Incheon Intl Airport

Our best Cathay Pacific deals on Washington, D.C. to Incheon Intl Airport flight tickets
Cathay Pacific
Oct 1
DCA5:30 pmWashington, D.C. Reagan-National
36h 35m
2 stops
ICN7:05 pmIncheon Intl
Oct 20
ICN3:10 pmIncheon Intl
42h 06m
2 stops
DCA8:16 pmWashington, D.C. Reagan-National
$1,141
Find similar
Cathay Pacific
Sep 22
IAD5:40 pmWashington, D.C. Dulles Intl
30h 00m
2 stops
ICN12:40 pmIncheon Intl
Oct 15
ICN3:10 pmIncheon Intl
56h 41m
2 stops
IAD10:51 amWashington, D.C. Dulles Intl
$1,149
Find similar
Cathay Pacific
Sep 18
DCA1:33 pmWashington, D.C. Reagan-National
34h 07m
2 stops
ICN12:40 pmIncheon Intl
Sep 24
ICN3:10 pmIncheon Intl
46h 45m
2 stops
DCA12:55 amWashington, D.C. Reagan-National
$1,156
Find similar

China Eastern flights from Washington, D.C. to Incheon Intl Airport

Our best China Eastern deals on Washington, D.C. to Incheon Intl Airport flight tickets
China Eastern
Nov 5
IAD12:09 pmWashington, D.C. Dulles Intl
33h 46m
2 stops
ICN11:55 amIncheon Intl
Nov 11
ICN8:55 amIncheon Intl
24h 13m
2 stops
IAD7:08 pmWashington, D.C. Dulles Intl
$1,021
Find similar
China Eastern
Nov 3
DCA6:05 amWashington, D.C. Reagan-National
39h 50m
2 stops
ICN11:55 amIncheon Intl
Nov 18
ICN8:55 amIncheon Intl
23h 05m
2 stops
DCA6:00 pmWashington, D.C. Reagan-National
$1,050
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 September 17, 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

Sat 11/8

8:26 pm-4:10 pm

1 stop29h 44m

Incheon Intl

Sat 11/15

9:25 pm-7:23 am

2 stops23h 58m

$802

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Fri 10/17

5:35 am-4:50 am

1 stop34h 15m

Incheon Intl

Fri 10/24

8:45 pm-3:37 pm

2 stops31h 52m

$803

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Mon 10/20

5:35 am-4:50 am

1 stop34h 15m

Incheon Intl

Mon 11/10

9:25 pm-7:19 pm

2 stops35h 54m

$808

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Mon 10/20

5:35 am-4:50 am

1 stop34h 15m

Incheon Intl

Sun 10/26

9:15 pm-10:36 pm

2 stops38h 21m

$811

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sat 10/4

5:15 pm-4:05 pm

2 stops33h 50m

Incheon Intl

Tue 10/14

5:45 pm-9:38 am

2 stops28h 53m

$950

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 11/5

9:45 am-5:10 pm

2 stops41h 25m

Incheon Intl

Wed 11/12

6:55 pm-4:21 pm

2 stops35h 26m

$959

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 10/22

9:40 pm-5:40 pm

1 stop31h 00m

Incheon Intl

Mon 10/27

12:10 am-12:45 pm

1 stop25h 35m

$1,011

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 11/5

12:09 pm-11:55 am

2 stops33h 46m

Incheon Intl

Tue 11/11

8:55 am-7:08 pm

2 stops24h 13m

$1,021

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 10/28

10:10 pm-6:20 pm

1 stop31h 10m

Incheon Intl

Wed 11/5

12:10 am-11:45 am

1 stop25h 35m

$1,029

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Mon 11/3

6:05 am-11:55 am

2 stops39h 50m

Incheon Intl

Tue 11/18

8:55 am-6:00 pm

2 stops23h 05m

$1,050

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

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 $902, 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 $1,042.

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 Wednesday when prices can be found for as low as $1,432. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,660. 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 at noon when prices are $1,656 on average. Flights to Incheon Intl Airport from Washington, D.C. at noon 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 $1,684 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 $1,244 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 16% 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 September 2025, prices for Washington, D.C. to Incheon Intl Airport flights are approximately 28% 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

$555

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 $555. The best round-trip flight deal from Washington, D.C. to Incheon Intl Airport found on momondo in the last 72 hours is $1,094.
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 17h 35m, 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 $367Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Air ChinaPriceFrom $591Free CancellationRating
7.3
101 reviews
Search Air China flights
American AirlinesPriceFrom $716Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Asiana AirlinesPriceFrom $759Free CancellationRating
8.2
481 reviews
Search Asiana Airlines flights
Turkish AirlinesPriceFrom $800Free CancellationRating
7.3
3,965 reviews
Search Turkish Airlines flights
Air CanadaPriceFrom $864Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
DeltaPriceFrom $877Free CancellationRating
7.9
7,961 reviews
Search Delta flights
Korean AirPriceFrom $1,059Free CancellationRating
8.4
1,140 reviews
Search Korean Air flights

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

    Across 7 Korean Air flights from Washington, D.C. to Incheon Intl Airport this week, the average price was $1,703, with the best Korean Air deals starting from $1,059 round-trip. 1,140 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

    $877 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 $1,650, however, with flight time and availability significantly affecting the price. Delta (7.9/10 from 7,961 user reviews) flies into Incheon Intl Airport from Washington, D.C. 7 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
Daejeon
Seongnam
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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