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$446+ Cheap flights from Washington, D.C. (WAS) to South Korea

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — ICN
Apr 25 — May 21
Sat 4/25
Sat 5/2
1 adult, Economy
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Cheap flight deals from Washington, D.C. to South Korea

Cheapest flights from Washington, D.C. to South Korea
Explore the most affordable flight options available from Washington, D.C. to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2026.

This oojo deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:15 am
IAD
-
ICN
1 stop20h 45m
EVA Air
Sat 9/1212:00 pm
ICN
-
IAD
1 stop23h 00m
EVA Air
Deal found 3/22$986
This SmartFares deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Wed 5/2010:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/23$996
This Kiwi.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/301:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Tue 9/812:55 pm
ICN
-
IAD
3 stops38h 14m
Multiple Airlines
Deal found 3/23$998
This EVA Air deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:15 am
IAD
-
ICN
1 stop20h 45m
EVA Air
Wed 9/2312:00 pm
ICN
-
IAD
1 stop23h 00m
EVA Air
Deal found 3/23$999
This SmartFares deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Mon 5/410:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/24$1,000
This KAYAK deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:50 am
IAD
-
ICN
1 stop20h 10m
EVA Air
Fri 9/1112:00 pm
ICN
-
IAD
1 stop23h 00m
EVA Air
Deal found 3/23$1,003
This oojo deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:50 am
IAD
-
PUS
1 stop27h 10m
EVA Air
Tue 9/87:10 pm
PUS
-
IAD
1 stop39h 50m
EVA Air
Deal found 3/23$1,005
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/151:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Wed 5/207:10 am
ICN
-
IAD
3 stops38h 02m
Multiple Airlines
Deal found 3/22$1,005
This Kiwi.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Wed 5/207:10 am
ICN
-
IAD
3 stops38h 02m
Multiple Airlines
Deal found 3/23$1,006
This oojo deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/101:50 am
IAD
-
ICN
1 stop27h 55m
EVA Air
Tue 9/17:45 pm
ICN
-
IAD
1 stop39h 15m
EVA Air
Deal found 3/25$1,010
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/171:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Wed 5/209:45 am
ICN
-
IAD
3 stops35h 27m
Multiple Airlines
Deal found 3/22$1,012
This Justfly.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/101:50 am
IAD
-
ICN
1 stop27h 55m
Multiple Airlines
Tue 9/17:45 pm
ICN
-
IAD
1 stop39h 15m
Multiple Airlines
Deal found 3/23$1,013

Find flight deals from Washington, D.C. to South Korea

Keep the following information in mind while searching for Washington, D.C. to South Korea flight deals. Data was last updated March 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$996
(SmartFares)

One-way from

$446
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,438

Good round-trip deal

$612 or less

Good one-way deal

$415 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seoul (SEL) flights.
Search Deals
From Washington, D.C. (WAS) to South Korea
Search Deals
One-way flight from Washington, D.C. (WAS) to South Korea
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($63 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to South Korea.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to South Korea.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to South Korea 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, Cheapflights users made 2,558,603 searches. Data last updated March 26, 2026.
Use the filters below to find and compare flights from Washington, D.C. to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Wed 8/26

1:50 am-6:00 pm

1 stop27h 10m

Busan Gimhae

Tue 9/8

7:10 pm-10:00 pm

1 stop39h 50m

$1,005

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 9/21

8:20 am-9:15 pm

2 stops23h 55m

Seoul Gimpo Intl

Wed 10/7

8:00 am-10:57 pm

2 stops27h 57m

$1,260

BaltimoreBusan

BWI - PUS

BWIPUS

Baltimore/Washington

Thu 8/27

6:11 pm-6:00 pm

2 stops34h 49m

Busan Gimhae

Tue 9/8

7:10 pm-6:21 am

2 stops24h 11m

$1,294

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 9/7

6:59 am-9:15 pm

2 stops25h 16m

Seoul Gimpo Intl

Fri 9/11

7:15 pm-7:58 am

2 stops49h 43m

$1,301

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 9/8

6:59 pm-4:20 am

1 stop20h 21m

Incheon Intl

Wed 9/16

4:50 pm-7:13 am

1 stop27h 23m

$1,322

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Fri 9/4

10:55 am-9:15 pm

2 stops21h 20m

Seoul Gimpo Intl

Wed 10/7

8:00 am-6:27 pm

2 stops23h 27m

$1,344

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 7/21

3:03 pm-4:20 am

2 stops24h 17m

Incheon Intl

Tue 7/28

4:50 pm-11:47 am

2 stops31h 57m

$1,346

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Wed 4/22

6:59 pm-5:30 pm

2 stops33h 31m

Incheon Intl

Wed 5/6

7:35 pm-5:59 pm

2 stops35h 24m

$1,371

Washington, D.C.Busan

DCA - PUS

DCAPUS

Washington, D.C. Reagan-National

Wed 5/6

6:59 pm-11:15 am

2 stops27h 16m

Busan Gimhae

Wed 5/13

10:30 am-8:06 pm

2 stops46h 36m

$1,405

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Tue 9/15

10:49 am-9:15 pm

2 stops21h 26m

Seoul Gimpo Intl

Wed 9/30

8:00 am-4:29 pm

2 stops21h 29m

$1,406

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Washington, D.C. to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to South Korea

What is the cheapest month to book a flight from Washington, D.C. to South Korea?

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. to South Korea (average of $250). Flying from Washington, D.C. to South Korea in July is currently the most expensive (average of $1,157). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to KR?

Find hourly flight availability from Washington, D.C. to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2026.

It’s optimal to fly from Washington, D.C. to South Korea in the evening. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Washington, D.C. to South Korea?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to South Korea. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Washington, D.C. to South Korea flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights from Washington, D.C. to South Korea delayed?

About 27% of weekly flights between Washington, D.C. and South Korea have experienced delays in the past year, with the average delay time being 103 minutes.

What is the most punctual flight time for Washington, D.C. to South Korea flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to South Korea flights?

Over the last year, Korean Air have had the lowest number of delays on this route, with just 27% of flights being delayed.

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to South Korea. Reviews last updated March 26, 2026.
Peruse reviews from past customers who have flown with Korean Air,AIR PREMIA, andDelta from Washington, D.C. to South Korea to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,203 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,203 reviews
Korean Air
8.4
Very good
1,203 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
AIR PREMIA
8.2
Very good
83 reviews
Korean Air
8.4
Very good
1,203 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
7.9
Good
8,340 reviews
Korean Air
8.4
Very good
1,203 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
United Airlines
7.4
Good
9,491 reviews
Korean Air
8.4
Very good
1,203 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air Canada
7.1
Good
10,844 reviews
Korean Air
8.4
Very good
1,203 reviews

Boarding

8.5

Crew

8.7

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to South Korea?

    EVA Air, Japan Airlines, and United Airlines can get you from Washington, D.C. to South Korea in just under 20h 21m. Your travel time can differ by up to 8h 09m. The distance from Washington, D.C. to South Korea is about 6938 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Washington, D.C. to South Korea one-way?

    One-way options have recently been found by users for as low as $363 on AIR PREMIA. Other airlines that offer cheap prices include Air China from $416 and Turkish Airlines from $488 one-way.

  • What are the most popular routes from Washington, D.C. to South Korea?

    When deciding which route to take from Washington, D.C. to South Korea consider Washington, D.C. Dulles Intl - Incheon Intl, Washington, D.C. Reagan-National - Incheon Intl or Baltimore/Washington - Incheon Intl as they are the most popular.

  • What are the cheapest flights from Washington, D.C. to South Korea?

    Looking at all options, your cheapest flight can be booked for $287. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $947 on average, our data indicates $2,360 when flying from Washington, D.C. to South Korea.

  • Can I find deals for flights from Washington, D.C. to South Korea that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to South Korea?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to South Korea.

  • Can I find deals for business class flights from Washington, D.C. to South Korea?

    Yes. Cheapflights offers flight deals from Washington, D.C. to South Korea by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to South Korea?

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. to South Korea (average of $250). Flying from Washington, D.C. to South Korea in July is currently the most expensive (average of $1,157). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 9 airlines flying from Washington, D.C. to South Korea

Discover the top 9 airlines that operate flights from Washington, D.C. to South Korea. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$317Average$1,492FlexibilityNo cancel feeOn-time69%
DeltaCheapest$377Average$1,586FlexibilityNo cancel feeOn-timeN/A
Air ChinaCheapest$591Average$1,125FlexibilityNo cancel feeOn-time67%
AIR PREMIACheapest$595Average$1,256FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$685Average$1,332FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$716Average$1,387FlexibilityNo cancel feeOn-time71%
Asiana AirlinesCheapest$740Average$2,036FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$827Average$1,075FlexibilityNo cancel feeOn-time77%
Korean AirCheapest$1,385Average$1,783FlexibilityNo cancel feeOn-time81%

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