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$438+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SEL
May 2 — May 91
Sat 5/2
Sat 5/9
1 adult, Economy
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Cheap 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 April 2, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/241:59 pm
DCA
-
ICN
2 stops36h 51m
Multiple Airlines
Fri 5/81:00 pm
ICN
-
DCA
1 stop20h 00m
Multiple Airlines
Deal found 3/28$1,143
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/196:00 pm
DCA
-
ICN
2 stops32h 50m
Multiple Airlines
Wed 5/271:00 pm
ICN
-
DCA
1 stop20h 06m
Multiple Airlines
Deal found 3/28$1,187
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/176:00 pm
DCA
-
ICN
2 stops32h 50m
Multiple Airlines
Tue 5/51:00 pm
ICN
-
DCA
1 stop20h 00m
Multiple Airlines
Deal found 3/28$1,217
This FlightHub deal was found by Cheapflights users on 3/29. 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.
Mon 11/235:04 pm
DCA
-
ICN
2 stops28h 16m
Multiple Airlines
Mon 12/78:15 pm
ICN
-
DCA
2 stops33h 53m
Multiple Airlines
Deal found 3/29$1,221
This American Airlines deal was found by Cheapflights users on 3/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:00 am
DCA
-
ICN
1 stop21h 45m
American Airlines
Thu 9/105:50 pm
ICN
-
DCA
1 stop19h 08m
American Airlines
Deal found 3/30$1,242
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Thu 4/236:00 pm
DCA
-
ICN
2 stops32h 50m
Multiple Airlines
Fri 5/1510:05 pm
ICN
-
DCA
1 stop35h 01m
Multiple Airlines
Deal found 3/29$1,243
This Air Canada deal was found by Cheapflights users on 3/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
DCA
-
ICN
1 stop21h 25m
Air Canada
Wed 9/166:00 pm
ICN
-
DCA
1 stop29h 20m
Air Canada
Deal found 3/31$1,245
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:00 am
DCA
-
ICN
1 stop21h 45m
American Airlines
Wed 9/305:50 pm
ICN
-
DCA
2 stops26h 09m
American Airlines
Deal found 3/27$1,247
This Air Canada deal was found by Cheapflights users on 3/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:40 am
DCA
-
ICN
1 stop17h 35m
Air Canada
Tue 10/205:45 pm
ICN
-
DCA
2 stops28h 10m
Air Canada
Deal found 3/31$1,250
This Air Canada deal was found by Cheapflights users on 3/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:20 pm
DCA
-
ICN
2 stops34h 45m
Air Canada
Tue 5/197:05 pm
ICN
-
DCA
2 stops28h 14m
Air Canada
Deal found 3/29$1,253
This Air Canada deal was found by Cheapflights users on 3/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:40 pm
DCA
-
ICN
1 stop31h 50m
Air Canada
Tue 5/197:05 pm
ICN
-
DCA
1 stop26h 48m
Air Canada
Deal found 3/31$1,255
This oojo deal was found by Cheapflights users on 3/30. 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 8/316:59 am
DCA
-
GMP
2 stops25h 16m
Japan Airlines
Mon 11/3012:05 pm
GMP
-
DCA
2 stops23h 24m
Japan Airlines
Deal found 3/30$1,324

Find 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 April 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,143
(Kiwi.com)

One-way from

$438
(Kiwi.com)

Popular in

January

Cheapest in

March

Average price

$1,504
Provider with most accurate pricing for Washington, D.C. Reagan-National-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Seoul (SEL) flights.
Search Deals
From Washington, D.C. Reagan-National to Seoul (SEL)
Search Deals
One-way flight from Washington, D.C. Reagan-National to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($201 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($93 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 2, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Wed 9/16

7:22 pm-10:40 am

2 stops26h 18m

Seoul Gimpo Intl

Wed 9/23

8:00 am-11:02 pm

2 stops28h 02m

$1,426

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sun 4/19

7:00 am-9:15 pm

2 stops25h 15m

Seoul Gimpo Intl

Wed 5/27

8:00 am-7:59 am

2 stops36h 59m

$1,440

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 4/27

9:32 am-9:15 pm

2 stops22h 43m

Seoul Gimpo Intl

Mon 5/11

12:05 pm-10:15 pm

2 stops23h 10m

$1,545

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Mon 8/24

6:30 am-5:55 pm

2 stops22h 25m

Seoul Gimpo Intl

Mon 8/31

8:00 am-4:22 pm

2 stops45h 22m

$1,566

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Mon 6/1

6:59 am-5:15 am

3 stops33h 16m

Incheon Intl

Fri 7/3

8:45 pm-8:52 am

2 stops25h 07m

$1,583

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Sat 4/18

11:36 am-12:40 pm

2 stops36h 04m

Incheon Intl

Wed 5/13

3:10 pm-11:59 pm

2 stops45h 49m

$1,608

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Tue 4/21

6:59 pm-7:05 pm

2 stops35h 06m

Incheon Intl

Thu 5/14

1:55 am-11:59 pm

2 stops35h 04m

$1,608

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Sun 9/6

5:00 pm-5:30 pm

1 stop35h 30m

Incheon Intl

Wed 9/9

7:35 pm-4:27 pm

1 stop33h 52m

$1,609

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Thu 4/30

6:59 pm-5:30 pm

2 stops33h 31m

Incheon Intl

Mon 5/11

7:35 pm-5:59 pm

2 stops35h 24m

$1,614

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

Sun 7/26

7:24 pm-10:40 am

2 stops26h 16m

Seoul Gimpo Intl

Fri 8/7

8:00 am-11:17 pm

2 stops28h 17m

$1,753

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

Showing 1-10 of 46 resultsSorted by cheapest first
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Compare providers for flights from Reagan-National to Seoul

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Reagan-National to Seoul in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Reagan-National Airport-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Reagan-National Airport-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, April is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Seoul (average of $369). Flying from Washington, D.C. Reagan-National Airport to Seoul in January is currently the most expensive (average of $1,777). 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.

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 April 2, 2026.
Peruse reviews from past customers who have flown with 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.
Air Canada
7.1
Good
10,880 reviews

Entertainment

6.8

Food

6.3

Comfort

7.1

Boarding

7.3

Crew

7.8

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Dr vandana,Feb 2026

SFO - YYC

It was good, the lounge facilities can be better with some vegetarian options. Overall good
Air Canada
7.1
Good
10,880 reviews
Air Canada
7.1
Good
10,880 reviews

Entertainment

6.8

Food

6.3

Comfort

7.1

Boarding

7.3

Crew

7.8

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Dr vandana,Feb 2026

SFO - YYC

It was good, the lounge facilities can be better with some vegetarian options. Overall good

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 26h 18m. Japan Airlines provides one of the quickest options available for as low as $1,426. The distance from Washington, D.C. Reagan-National Airport to Seoul is about 6939 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly 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 $1,137 on this airline. Air Canada is 23% 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, April is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Seoul (average of $369). Flying from Washington, D.C. Reagan-National Airport to Seoul in January is currently the most expensive (average of $1,777). 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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Alternative routes for Reagan-National to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Incheon Intl flights
Reagan-National to Incheon Intl flights
Baltimore to Incheon Intl flights

Top airline flying from Reagan-National to Seoul

Discover the top airline 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 April 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,137Average$1,243FlexibilityNo cancel feeOn-time67%

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