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$423+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — ICN
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
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 July 12, 2026.

This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:35 pm
BWI
-
ICN
1 stop21h 05m
United Airlines
Thu 11/196:00 pm
ICN
-
BWI
1 stop25h 58m
United Airlines
Deal found 7/11$856
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:16 pm
BWI
-
ICN
2 stops23h 24m
United Airlines
Tue 11/176:00 pm
ICN
-
BWI
1 stop25h 58m
United Airlines
Deal found 7/11$861
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:10 am
BWI
-
ICN
1 stop31h 30m
United Airlines
Thu 11/196:00 pm
ICN
-
BWI
1 stop25h 58m
United Airlines
Deal found 7/11$862
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:10 am
BWI
-
ICN
1 stop31h 30m
United Airlines
Tue 11/1712:45 pm
ICN
-
BWI
2 stops22h 38m
United Airlines
Deal found 7/11$866
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:10 am
BWI
-
ICN
1 stop31h 30m
United Airlines
Mon 11/2312:45 pm
ICN
-
BWI
1 stop31h 13m
United Airlines
Deal found 7/11$868
This KAYAK deal was found by Cheapflights users on 7/11. 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.
Mon 11/96:35 pm
BWI
-
ICN
1 stop21h 05m
Asiana Airlines
Mon 11/166:00 pm
ICN
-
BWI
1 stop25h 58m
Asiana Airlines
Deal found 7/11$905
This KAYAK deal was found by Cheapflights users on 7/12. 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 9/28:00 am
BWI
-
ICN
1 stop31h 20m
Asiana Airlines
Wed 9/1611:30 am
ICN
-
BWI
1 stop19h 10m
Asiana Airlines
Deal found 7/12$911
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:52 pm
BWI
-
ICN
1 stop20h 28m
United Airlines
Tue 10/611:30 am
ICN
-
BWI
1 stop19h 09m
United Airlines
Deal found 7/10$981
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:35 pm
BWI
-
ICN
2 stops21h 45m
United Airlines
Wed 10/2111:30 am
ICN
-
BWI
1 stop19h 09m
United Airlines
Deal found 7/10$986
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:00 am
BWI
-
ICN
1 stop31h 20m
United Airlines
Wed 10/711:30 am
ICN
-
BWI
1 stop19h 09m
United Airlines
Deal found 7/10$987
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:00 am
BWI
-
ICN
1 stop31h 20m
United Airlines
Wed 11/1812:45 pm
ICN
-
BWI
1 stop18h 50m
United Airlines
Deal found 7/11$990
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:52 pm
BWI
-
ICN
1 stop31h 08m
United Airlines
Tue 10/204:50 pm
ICN
-
BWI
2 stops30h 49m
United Airlines
Deal found 7/10$991

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 July 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$856
(United Airlines)

One-way from

$423
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,603

Good round-trip deal

$1,117 or less

Good one-way deal

$649 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. 7% potential increase in price ($116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 12, 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

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 11/11

6:35 pm-5:40 am

1 stop21h 05m

Incheon Intl

Thu 11/19

6:00 pm-5:58 am

1 stop25h 58m

$856

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Thu 9/24

4:13 pm-4:20 am

2 stops23h 07m

Incheon Intl

Thu 10/15

11:30 am-5:39 pm

1 stop19h 09m

$986

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Thu 9/24

6:50 pm-4:20 am

1 stop20h 30m

Incheon Intl

Sun 10/11

4:50 pm-7:31 am

1 stop27h 41m

$1,031

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 10/7

6:00 am-2:10 pm

1 stop19h 10m

Incheon Intl

Wed 10/21

10:15 am-11:04 pm

1 stop25h 49m

$1,106

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 11/11

7:30 am-3:50 pm

1 stop18h 20m

Incheon Intl

Tue 11/24

6:00 pm-8:46 pm

1 stop16h 46m

$1,106

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Thu 9/3

7:39 am-3:20 pm

1 stop18h 41m

Incheon Intl

Thu 9/10

10:15 am-4:55 pm

1 stop19h 40m

$1,106

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 10/6

1:20 pm-5:40 pm

1 stop39h 20m

Incheon Intl

Thu 10/22

11:20 pm-7:50 pm

1 stop33h 30m

$1,115

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Sat 10/10

6:10 pm-2:10 pm

1 stop31h 00m

Incheon Intl

Thu 10/22

7:40 pm-11:39 pm

1 stop16h 59m

$1,163

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Wed 9/9

1:15 am-10:20 am

1 stop20h 05m

Busan Gimhae

Mon 9/14

11:20 am-10:00 pm

1 stop23h 40m

$1,187

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 10/6

3:04 pm-4:20 am

2 stops24h 16m

Incheon Intl

Tue 10/20

11:30 am-5:39 pm

1 stop19h 09m

$1,211

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

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, October is the cheapest month in which you can book a flight from Washington, D.C. to South Korea (average of $197). Flying from Washington, D.C. to South Korea in June is currently the most expensive (average of $2,083). 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 July 12, 2026.

When flying from Washington, D.C. to South Korea, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Washington, D.C. to South Korea

Explore weekly flight availability from Washington, D.C. to South Korea. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 12, 2026.

The most flights from WAS to KR0 are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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

About 24% of weekly flights between Washington, D.C. and South Korea have experienced delays in the past year, with the average delay time being 97 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?

Saturday tends to have the lowest number of delays on this route, whereas Friday 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 25% of flights being delayed.

How far ahead should I book a flight from Washington, D.C. to South Korea?

The price you pay for your flight from Washington, D.C. to South Korea may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 July 12, 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
1,221 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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
1,221 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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
100 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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
7.8
Good
8,459 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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
9,981 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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
11,332 reviews
Korean Air
8.4
Very good
1,221 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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?

    United Airlines, Delta, and Turkish Airlines can get you from Washington, D.C. to South Korea in just under 19h 10m. Your travel time can differ by up to 20h 10m. 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 $43 on Breeze Airways. Other airlines that offer cheap prices include United Airlines from $53 and Delta from $98 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, Baltimore/Washington - Incheon Intl or Washington, D.C. Reagan-National - Incheon Intl as they are the most popular.

  • What are the most reliable airlines from Washington, D.C. to South Korea?

    The top 3 most reliable airlines when flying from Washington, D.C. to South Korea are AIR PREMIA (93%), Delta (68%) and Korean Air (68%).

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

    Looking at all options, your cheapest flight can be booked for $486. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $911 on average, our data indicates $2,714 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, October is the cheapest month in which you can book a flight from Washington, D.C. to South Korea (average of $197). Flying from Washington, D.C. to South Korea in June is currently the most expensive (average of $2,083). 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 July 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$397Average$1,555FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$441Average$1,226FlexibilityNo cancel feeOn-time67%
AIR PREMIACheapest$659Average$1,298FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$687Average$1,537FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$716Average$1,246FlexibilityNo cancel feeOn-time71%
Air ChinaCheapest$729Average$1,205FlexibilityNo cancel feeOn-time67%
EVA AirCheapest$875Average$1,266FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$929Average$1,109FlexibilityNo cancel feeOn-time77%
Korean AirCheapest$1,385Average$1,708FlexibilityNo cancel feeOn-time81%

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