Seoul

$421+ Cheap flights from Reagan-National (DCA) to Seoul (SEL)

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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SEL
Oct 15 — Oct 221
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Cheap flight deals from Reagan-National to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Seoul (SEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$909
(Kiwi.com)

One-way from

$421
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,137
From Washington, D.C. Reagan-National to Seoul (SEL)
One-way flight from Washington, D.C. Reagan-National to Seoul (SEL)
Highest demand for flights based on searches. 19% potential increase in price ($339 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($84 potential savings vs. average RT price).
Average for round-trip flights in September 2025

Find flight deals from Reagan-National to Seoul

Cheapest flights from Reagan-National to Seoul
Explore the most affordable flight options available from Reagan-National to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. 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 11/179:59 amDCA - ICN
1 stop29h 21mMultiple Airlines
Sun 11/236:55 pmICN - DCA
2 stops40h 25mMultiple Airlines
Deal found 9/13$909
This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:50 pmDCA - ICN
3 stops35h 50mMultiple Airlines
Thu 10/231:30 pmICN - DCA
3 stops35h 38mMultiple Airlines
Deal found 9/13$924
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:59 amDCA - ICN
3 stops23h 41mMultiple Airlines
Sat 10/258:45 pmICN - DCA
3 stops28h 34mMultiple Airlines
Deal found 9/14$926
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 11/169:59 amDCA - ICN
1 stop40h 11mMultiple Airlines
Sun 11/236:55 pmICN - DCA
2 stops40h 25mMultiple Airlines
Deal found 9/14$957
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:40 pmDCA - ICN
3 stops34h 00mMultiple Airlines
Fri 10/246:00 pmICN - DCA
1 stop16h 51mMultiple Airlines
Deal found 9/14$959
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/268:00 amDCA - ICN
2 stops43h 10mMultiple Airlines
Sun 11/28:35 pmICN - DCA
1 stop39h 24mMultiple Airlines
Deal found 9/14$961
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:40 pmDCA - ICN
3 stops34h 00mMultiple Airlines
Wed 10/226:00 pmICN - DCA
1 stop16h 51mMultiple Airlines
Deal found 9/14$962
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/319:59 amDCA - ICN
1 stop30h 21mMultiple Airlines
Fri 11/78:35 pmICN - DCA
1 stop34h 18mMultiple Airlines
Deal found 9/13$982
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 11/179:59 amDCA - ICN
1 stop29h 21mMultiple Airlines
Wed 12/101:20 pmICN - DCA
2 stops22h 39mMultiple Airlines
Deal found 9/13$983
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/269:59 amDCA - ICN
1 stop41h 11mMultiple Airlines
Fri 10/316:55 pmICN - DCA
1 stop36h 03mMultiple Airlines
Deal found 9/13$985
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:05 amDCA - GMP
2 stops38h 55mChina Eastern
Mon 11/108:50 pmGMP - DCA
2 stops35h 10mChina Eastern
Deal found 9/13$1,050
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:00 amDCA - GMP
2 stops24h 50mMultiple Airlines
Mon 10/278:00 amGMP - DCA
2 stops26h 59mMultiple Airlines
Deal found 9/14$1,495

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Seoul 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 September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Seoul that are best for you.

Fly from

Reagan-National

Fly to

Seoul

Route

Depart

Return

Price

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 11/5

6:05 am-11:00 am

2 stops38h 55m

Seoul Gimpo Intl

Mon 11/10

8:50 pm-6:00 pm

2 stops35h 10m

$1,050

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 11/3

6:05 am-11:00 am

2 stops38h 55m

Seoul Gimpo Intl

Mon 11/10

8:50 pm-6:00 pm

2 stops35h 10m

$1,050

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 11/17

11:10 am-11:00 am

2 stops33h 50m

Seoul Gimpo Intl

Mon 11/24

8:50 pm-6:00 pm

2 stops35h 10m

$1,050

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 11/10

11:10 am-7:50 pm

2 stops42h 40m

Seoul Gimpo Intl

Mon 11/17

12:00 pm-6:00 pm

2 stops44h 00m

$1,050

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Wed 10/29

6:58 pm-7:25 pm

2 stops35h 27m

Incheon Intl

Mon 11/3

8:35 pm-5:58 pm

2 stops35h 23m

$1,116

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Sat 11/8

6:58 pm-7:25 pm

2 stops34h 27m

Incheon Intl

Fri 11/14

8:35 pm-5:58 pm

2 stops35h 23m

$1,116

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Sat 10/25

6:59 pm-7:25 pm

2 stops35h 26m

Incheon Intl

Fri 10/31

8:35 pm-5:58 pm

1 stop34h 23m

$1,116

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Tue 10/28

7:02 pm-12:45 pm

2 stops28h 43m

Incheon Intl

Mon 11/3

10:05 am-11:00 pm

2 stops26h 55m

$1,151

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Thu 10/2

12:25 pm-12:40 pm

2 stops35h 15m

Incheon Intl

Tue 10/14

10:10 am-12:59 am

2 stops27h 49m

$1,170

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Wed 11/12

4:59 pm-1:55 pm

2 stops30h 56m

Incheon Intl

Mon 11/17

7:35 pm-6:44 pm

2 stops37h 09m

$1,170

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 40 results
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Best time to book a flight from Reagan-National to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Reagan-National 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. Reagan-National Airport to Seoul

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Seoul?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Seoul (average of $990). Flying from Washington, D.C. Reagan-National Airport to Seoul in December is currently the most expensive (average of $1,633). 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 DCA to SEL?

Find hourly flight availability from Reagan-National to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

One of the essential ways to save on airfare from Washington, D.C. Reagan-National Airport to Seoul is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 28% on airfare.

How much does it cost to fly round-trip from Washington, D.C. Reagan-National Airport to Seoul?

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Korean Air, American Airlines, and Air Canada from Washington, D.C. Reagan-National Airport to Seoul 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.

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

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.

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

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.

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

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.

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

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 Reagan-National to Seoul. 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. Reagan-National Airport to Seoul?

    A quick flight from Washington, D.C. Reagan-National Airport to Seoul can take about 35h 27m. China Eastern provides one of the quickest options available for as low as $1,116. The distance from Washington, D.C. Reagan-National Airport to Seoul is about 6953 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Seoul round-trip?

    Our cheapest airline available from Washington, D.C. Reagan-National Airport to Seoul is Air Canada. Our recent data shows that you can find tickets from as low as $864 on this airline. Additional options worth looking into are American Airlines and Korean Air, starting at $877 and $1,440 round-trip. Air Canada is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Reagan-National to Seoul that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Seoul?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Seoul.

  • Can I find deals for business class flights from Reagan-National to Seoul?

    Yes. Cheapflights offers flight deals from Reagan-National to Seoul 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. Reagan-National Airport to Seoul?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Seoul (average of $990). Flying from Washington, D.C. Reagan-National Airport to Seoul in December is currently the most expensive (average of $1,633). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Reagan-National to Seoul

Discover the top 3 airlines that operate flights from Reagan-National to Seoul. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$864Average$1,242FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$877Average$903FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,440Average$1,898FlexibilityNo cancel feeOn-time81%

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