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Cheap flights from Washington, D.C. to Seoul from $407

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 8/22. 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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Find the cheapest flights from Washington, D.C. to Seoul

Cheap round-trip flights

Logo
6:26 am - 9:35 pmBWI-ICN
26h 09m2 stops
Logo
1:20 pm - 9:02 pmICN-BWI
20h 42m1 stop
$837
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Sat, Oct 18 - Sun, Oct 26
Logo
6:26 am - 9:35 pmBWI-ICN
26h 09m2 stops
Logo
1:20 pm - 10:02 pmICN-BWI
21h 42m1 stop
$864
Find Deal
Sat, Oct 18 - Sun, Nov 2
Logo
5:35 am - 9:35 pmBWI-ICN
27h 00m2 stops
Logo
12:45 pm - 9:02 pmICN-BWI
21h 17m1 stop
$877
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Sun, Sep 21 - Wed, Oct 8
Logo
5:35 am - 9:10 pmBWI-ICN
26h 35m2 stops
Logo
8:35 am - 9:02 pmICN-BWI
25h 27m2 stops
$880
Find Deal
Mon, Sep 15 - Wed, Oct 15
Logo
6:26 am - 9:35 pmBWI-ICN
26h 09m2 stops
Logo
1:20 pm - 9:02 pmICN-BWI
21h 42m1 stop
$893
Find Deal
Thu, Oct 23 - Thu, Nov 6
Air Canada Logo
5:31 pm - 4:05 pmIAD-ICN
33h 34m2 stops
Air Canada Logo
5:45 pm - 6:31 amICN-IAD
25h 46m1 stop
$973Air Canada
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Mon, Aug 11 - Thu, Sep 11
Air Canada Logo
9:35 am - 4:15 pmIAD-ICN
17h 40m1 stop
Air Canada Logo
7:05 pm - 11:45 amICN-IAD
29h 40m1 stop
$979Air Canada
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Mon, Aug 11 - Thu, Sep 11
United Airlines Logo
7:00 pm - 4:20 amBWI-ICN
20h 20m1 stop
United Airlines Logo
11:30 am - 5:31 pmICN-BWI
19h 01m1 stop
$1,002United Airlines
Find Deal
Mon, Sep 15 - Sat, Sep 20
Turkish Airlines Logo
9:40 pm - 5:40 pmIAD-ICN
31h 00m1 stop
Turkish Airlines Logo
11:20 pm - 7:45 pmICN-IAD
33h 25m1 stop
$1,023Turkish Airlines
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Tue, Sep 23 - Tue, Oct 21
Turkish Airlines Logo
9:40 pm - 8:40 amIAD-ICN
22h 00m1 stop
Turkish Airlines Logo
12:10 am - 11:45 amICN-IAD
25h 35m1 stop
$1,027Turkish Airlines
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Mon, Aug 25 - Thu, Dec 18

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

Our best Air Canada deals on Washington, D.C. to Incheon Intl Airport flight tickets
Air Canada
Aug 11
IAD5:31 pmWashington, D.C. Dulles Intl
33h 34m
2 stops
ICN4:05 pmIncheon Intl
Sep 11
ICN5:45 pmIncheon Intl
25h 46m
1 stop
IAD6:31 amWashington, D.C. Dulles Intl
$973
Find similar
Air Canada
Aug 11
IAD9:35 amWashington, D.C. Dulles Intl
17h 40m
1 stop
ICN4:15 pmIncheon Intl
Sep 11
ICN7:05 pmIncheon Intl
29h 40m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$979
Find similar
Air Canada
Jan 5
DCA4:10 pmWashington, D.C. Reagan-National
35h 00m
2 stops
ICN5:10 pmIncheon Intl
Feb 16
ICN6:55 pmIncheon Intl
29h 31m
2 stops
DCA10:26 amWashington, D.C. Reagan-National
$984
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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
Sep 23
IAD9:40 pmWashington, D.C. Dulles Intl
31h 00m
1 stop
ICN5:40 pmIncheon Intl
Oct 21
ICN11:20 pmIncheon Intl
33h 25m
1 stop
IAD7:45 pmWashington, D.C. Dulles Intl
$1,023
Find similar
Turkish Airlines
Aug 25
IAD9:40 pmWashington, D.C. Dulles Intl
22h 00m
1 stop
ICN8:40 amIncheon Intl
Dec 18
ICN12:10 amIncheon Intl
25h 35m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$1,027
Find similar
Turkish Airlines
Oct 29
IAD2:30 pmWashington, D.C. Dulles Intl
29h 35m
1 stop
ICN9:05 amIncheon Intl
Nov 12
ICN10:45 amIncheon Intl
46h 30m
1 stop
IAD7:15 pmWashington, D.C. Dulles Intl
$1,029
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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 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 $1,072.

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 Wednesday when prices can be found for as low as $1,517. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,685. 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 $1,731 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 $1,740 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 $1,358 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 9% 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 July 2025, prices for Washington, D.C. to Incheon Intl Airport flights are approximately 34% 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

$407

Fastest flight time

17h 30m

Direct flights

Every day
The best one-way flight to Incheon Intl Airport from Washington, D.C. in the past 72 hours is $407. The best round-trip flight deal from Washington, D.C. to Incheon Intl Airport found on momondo in the last 72 hours is $837.
The fastest flight from Washington, D.C. to Incheon Intl Airport takes 17h 30m
Direct flights go from Washington, D.C. to Incheon Intl Airport every day.
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  • 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 30m, 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
8,849 reviews
Search United Airlines flights
Air ChinaPriceFrom $591Free CancellationRating
7.2
89 reviews
Search Air China flights
Asiana AirlinesPriceFrom $759Free CancellationRating
8.2
454 reviews
Search Asiana Airlines flights
Turkish AirlinesPriceFrom $800Free CancellationRating
7.3
3,898 reviews
Search Turkish Airlines flights
Air CanadaPriceFrom $866Free CancellationRating
7.1
9,704 reviews
Search Air Canada flights
American AirlinesPriceFrom $876Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $877Free CancellationRating
8.0
7,950 reviews
Search Delta flights
Korean AirPriceFrom $1,074Free CancellationRating
8.4
1,107 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 $1,769, with the best Korean Air deals starting from $1,074 round-trip. 1,107 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 $1,837, however, with flight time and availability significantly affecting the price. Delta (8.0/10 from 7,950 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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