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Cheap flights from Washington, D.C. to Seoul from $334

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 11/11. 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 Washington, D.C. to Seoul (WAS-ICN)

Cheap round-trip flights

Logo
6:45 pm - 6:45 pmIAD-ICN
35h 00m1 stop
Logo
9:20 pm - 11:22 pmICN-IAD
39h 02m2 stops
$841
Find Deal
vie., oct. 3 - dom., oct. 26
Logo
8:12 pm - 6:45 pmBWI-ICN
57h 33m2 stops
Logo
10:00 pm - 7:19 pmICN-BWI
35h 19m1 stop
$861
Find Deal
sáb., oct. 25 - vie., nov. 14
Air Canada Logo
4:35 pm - 4:05 pmDCA-ICN
34h 30m3 stops
Air Canada Logo
6:00 pm - 3:51 pmICN-DCA
34h 51m1 stop
$918Air Canada
Find Deal
mié., sep. 17 - mié., sep. 24
Air Canada Logo
4:35 pm - 4:05 pmDCA-ICN
34h 30m3 stops
Air Canada Logo
6:00 pm - 3:51 pmICN-DCA
34h 51m1 stop
$942Air Canada
Find Deal
sáb., sep. 6 - dom., sep. 14
Air China Logo
11:00 pm - 11:40 amIAD-ICN
23h 40m1 stop
Air China Logo
5:50 pm - 6:30 pmICN-IAD
38h 40m1 stop
$1,011Air China
Find Deal
mar., oct. 28 - jue., nov. 6
Air China Logo
11:00 pm - 2:15 pmIAD-ICN
26h 15m1 stop
Air China Logo
1:05 pm - 7:30 pmICN-IAD
19h 25m1 stop
$1,012Air China
Find Deal
mar., sep. 16 - mar., oct. 21
Turkish Airlines Logo
9:40 pm - 5:40 pmIAD-ICN
31h 00m1 stop
Turkish Airlines Logo
11:20 pm - 11:45 amICN-IAD
25h 25m1 stop
$1,013Turkish Airlines
Find Deal
mar., sep. 23 - mar., oct. 21
Turkish Airlines Logo
9:40 pm - 5:40 pmIAD-ICN
31h 00m1 stop
Turkish Airlines Logo
12:10 am - 7:15 pmICN-IAD
33h 05m1 stop
$1,018Turkish Airlines
Find Deal
mar., sep. 23 - mié., dic. 3
Cathay Pacific Logo
5:27 pm - 6:35 pmIAD-ICN
35h 08m2 stops
Cathay Pacific Logo
1:50 pm - 10:46 pmICN-IAD
46h 56m2 stops
$1,041Cathay Pacific
Find Deal
lun., nov. 3 - mié., dic. 3
Cathay Pacific Logo
5:30 pm - 12:40 pmDCA-ICN
30h 10m2 stops
Cathay Pacific Logo
10:10 am - 12:59 amICN-DCA
27h 49m2 stops
$1,044Cathay Pacific
Find Deal
mar., sep. 16 - mar., oct. 21

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

Our best Air China deals on Washington, D.C. to Incheon Intl Airport flight tickets
Air China
Oct 28
IAD11:00 pmWashington, D.C. Dulles Intl
23h 40m
1 stop
ICN11:40 amIncheon Intl
Nov 6
ICN5:50 pmIncheon Intl
38h 40m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,011
Find similar
Air China
Sep 16
IAD11:00 pmWashington, D.C. Dulles Intl
26h 15m
1 stop
ICN2:15 pmIncheon Intl
Oct 21
ICN1:05 pmIncheon Intl
19h 25m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,012
Find similar
Air China
Oct 28
IAD11:00 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
ICN4:35 pmIncheon Intl
Nov 6
ICN5:50 pmIncheon Intl
38h 40m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
$1,033
Find similar

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
Nov 3
IAD5:27 pmWashington, D.C. Dulles Intl
35h 08m
2 stops
ICN6:35 pmIncheon Intl
Dec 3
ICN1:50 pmIncheon Intl
46h 56m
2 stops
IAD10:46 pmWashington, D.C. Dulles Intl
$1,041
Find similar
Cathay Pacific
Sep 16
DCA5:30 pmWashington, D.C. Reagan-National
30h 10m
2 stops
ICN12:40 pmIncheon Intl
Oct 21
ICN10:10 amIncheon Intl
27h 49m
2 stops
DCA12:59 amWashington, D.C. Reagan-National
$1,044
Find similar
Cathay Pacific
Sep 16
DCA5:30 pmWashington, D.C. Reagan-National
30h 10m
2 stops
ICN12:40 pmIncheon Intl
Oct 14
ICN8:05 pmIncheon Intl
37h 11m
2 stops
DCA8:16 pmWashington, D.C. Reagan-National
$1,046
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 agosto 27, 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

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

vie. 10/3

6:45 pm-6:45 pm

1 stop35h 00m

Incheon Intl

dom. 10/26

9:20 pm-11:22 pm

2 stops39h 02m

$841

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

sáb. 10/25

8:12 pm-6:45 pm

2 stops57h 33m

Incheon Intl

vie. 11/14

10:00 pm-7:19 pm

1 stop35h 19m

$861

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

mié. 9/17

4:35 pm-4:05 pm

3 stops34h 30m

Incheon Intl

mié. 9/24

6:00 pm-3:51 pm

1 stop34h 51m

$918

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

sáb. 9/6

4:35 pm-4:05 pm

3 stops34h 30m

Incheon Intl

dom. 9/14

6:00 pm-3:51 pm

1 stop34h 51m

$942

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

mar. 10/28

11:00 pm-11:40 am

1 stop23h 40m

Incheon Intl

jue. 11/6

5:50 pm-6:30 pm

1 stop38h 40m

$1,011

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

mar. 9/16

11:00 pm-2:15 pm

1 stop26h 15m

Incheon Intl

mar. 10/21

1:05 pm-7:30 pm

1 stop19h 25m

$1,012

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

mar. 9/23

9:40 pm-5:40 pm

1 stop31h 00m

Incheon Intl

mar. 10/21

11:20 pm-11:45 am

1 stop25h 25m

$1,013

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

mar. 9/23

9:40 pm-5:40 pm

1 stop31h 00m

Incheon Intl

mié. 12/3

12:10 am-7:15 pm

1 stop33h 05m

$1,018

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

lun. 11/3

5:27 pm-6:35 pm

2 stops35h 08m

Incheon Intl

mié. 12/3

1:50 pm-10:46 pm

2 stops46h 56m

$1,041

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

mar. 9/16

5:30 pm-12:40 pm

2 stops30h 10m

Incheon Intl

mar. 10/21

10:10 am-12:59 am

2 stops27h 49m

$1,044

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 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 October is also very affordable. Most momondo users find prices during this month for around $1,047.

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 $1,463. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,651. 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 $1,666 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 $1,685 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 $1,316 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 17% 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 August 2025, prices for Washington, D.C. to Incheon Intl Airport flights are approximately 25% 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

$551

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 $551. The best round-trip flight deal from Washington, D.C. to Incheon Intl Airport found on momondo in the last 72 hours is $1,070.
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 $367Free CancellationRating
7.4
8,945 reviews
Search United Airlines flights
Air ChinaPriceFrom $591Free CancellationRating
7.3
95 reviews
Search Air China flights
American AirlinesPriceFrom $716Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Asiana AirlinesPriceFrom $759Free CancellationRating
8.2
477 reviews
Search Asiana Airlines flights
Turkish AirlinesPriceFrom $800Free CancellationRating
7.3
3,957 reviews
Search Turkish Airlines flights
Air CanadaPriceFrom $864Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
DeltaPriceFrom $877Free CancellationRating
7.9
7,977 reviews
Search Delta flights
Korean AirPriceFrom $1,059Free CancellationRating
8.4
1,133 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 $1,656, with the best Korean Air deals starting from $1,059 round-trip. 1,133 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 $1,699, however, with flight time and availability significantly affecting the price. Delta (7.9/10 from 7,977 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
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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