Southeast Asia

$385+ Cheap flights from Reagan-National (DCA) to Southeast Asia

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BKK
sep. 1 — sep. 81
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Cheap flight deals from Reagan-National to Southeast Asia

Keep the following information in mind while searching for Reagan-National to Southeast Asia flight deals. Data was last updated agosto 27, 2025.

Round-trip from

$875
(Korean Air)

One-way from

$385
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,194
From Washington, D.C. Reagan-National to Southeast Asia
One-way flight from Washington, D.C. Reagan-National to Southeast Asia
Highest demand for flights based on searches. 7% potential increase in price ($102 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($52 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Reagan-National to Southeast Asia

Cheapest flights from Reagan-National to Southeast Asia
Explore the most affordable flight options available from Reagan-National to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 27, 2025.

This Korean Air deal was found by Cheapflights users on 8/25. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/56:10 amDCA - BKK
2 stops30h 35mKorean Air
dom. 11/169:30 pmBKK - DCA
2 stops27h 26mKorean Air
Deal found 8/25$875
This American Airlines deal was found by Cheapflights users on 8/26. 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.
lun. 10/66:32 amDCA - SGN
2 stops28h 28mAmerican Airlines
lun. 10/208:20 amSGN - DCA
2 stops27h 39mAmerican Airlines
Deal found 8/26$877
This Expedia deal was found by Cheapflights users on 8/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/319:59 amDCA - MNL
2 stops28h 31mMultiple Airlines
lun. 11/174:55 pmMNL - DCA
2 stops40h 05mMultiple Airlines
Deal found 8/26$886
This Korean Air deal was found by Cheapflights users on 8/25. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/96:00 amDCA - BKK
2 stops27h 30mKorean Air
lun. 11/249:30 pmBKK - DCA
2 stops27h 26mKorean Air
Deal found 8/25$889
This oojo deal was found by Cheapflights users on 8/25. 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.
vie. 10/319:59 amDCA - MNL
2 stops35h 56mChina Airlines
sáb. 11/154:55 pmMNL - DCA
2 stops64h 05mChina Airlines
Deal found 8/25$891
This oojo deal was found by Cheapflights users on 8/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/319:59 amDCA - MNL
2 stops28h 31mChina Airlines
jue. 11/133:35 amMNL - DCA
2 stops53h 25mChina Airlines
Deal found 8/27$892
This Korean Air deal was found by Cheapflights users on 8/25. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/67:59 amDCA - BKK
2 stops41h 26mKorean Air
sáb. 11/2211:15 pmBKK - DCA
2 stops35h 26mKorean Air
Deal found 8/25$895
This Air Canada deal was found by Cheapflights users on 8/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/149:40 amDCA - SIN
2 stops33h 25mAir Canada
jue. 9/259:10 amSIN - DCA
2 stops35h 49mAir Canada
Deal found 8/25$895
This Air Canada deal was found by Cheapflights users on 8/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/138:40 pmDCA - SIN
2 stops46h 25mAir Canada
jue. 10/29:10 amSIN - DCA
2 stops38h 58mAir Canada
Deal found 8/24$896
This Korean Air deal was found by Cheapflights users on 8/25. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/18:35 amDCA - BKK
2 stops29h 30mKorean Air
mié. 9/172:35 amBKK - DCA
2 stops30h 25mKorean Air
Deal found 8/25$899
This Korean Air deal was found by Cheapflights users on 8/25. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/47:15 amDCA - SGN
2 stops27h 50mKorean Air
mié. 11/122:05 pmSGN - DCA
2 stops34h 51mKorean Air
Deal found 8/25$901
This FlightHub deal was found by Cheapflights users on 8/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/266:59 amDCA - MNL
2 stops59h 21mAir Canada
mié. 10/159:25 amMNL - DCA
2 stops24h 26mAir Canada
Deal found 8/25$903

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Southeast Asia 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 agosto 27, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Southeast Asia that are best for you.

Fly from

Reagan-National

Fly to

Southeast Asia

Route

Depart

Return

Price

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

jue. 11/6

8:40 pm-1:25 pm

2 stops28h 45m

Bangkok Suvarnabhumi

dom. 11/16

12:55 am-12:56 pm

2 stops24h 01m

$875

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

mié. 11/5

6:19 am-12:45 am

2 stops30h 26m

Bangkok Suvarnabhumi

dom. 11/23

11:15 pm-9:43 pm

2 stops34h 28m

$875

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

mié. 11/5

6:10 am-12:45 am

2 stops30h 35m

Bangkok Suvarnabhumi

mié. 11/19

9:40 am-9:43 pm

2 stops24h 03m

$875

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

jue. 11/6

6:00 am-12:45 am

2 stops30h 45m

Bangkok Suvarnabhumi

jue. 11/20

9:40 am-9:43 pm

2 stops24h 03m

$875

Washington, D.C.Ho Chi Minh City

DCA - SGN

DCASGN

Washington, D.C. Reagan-National

lun. 10/6

6:32 am-10:00 pm

2 stops28h 28m

Ho Chi Minh City

lun. 10/20

8:20 am-12:59 am

2 stops27h 39m

$877

Washington, D.C.Manila

DCA - MNL

DCAMNL

Washington, D.C. Reagan-National

vie. 10/31

9:59 am-2:30 am

2 stops28h 31m

Manila Ninoy Aquino Intl

jue. 11/13

3:35 am-8:00 pm

2 stops53h 25m

$892

Washington, D.C.Manila

DCA - MNL

DCAMNL

Washington, D.C. Reagan-National

mié. 9/10

8:59 am-9:35 am

2 stops36h 36m

Manila Ninoy Aquino Intl

jue. 10/9

4:50 pm-9:14 pm

2 stops64h 24m

$892

Washington, D.C.Manila

DCA - MNL

DCAMNL

Washington, D.C. Reagan-National

vie. 10/31

9:59 am-2:30 am

2 stops28h 31m

Manila Ninoy Aquino Intl

sáb. 11/8

4:55 pm-8:00 pm

2 stops64h 05m

$892

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

dom. 9/14

9:40 am-7:05 am

2 stops33h 25m

Singapore Changi

jue. 9/25

9:10 am-8:59 am

2 stops35h 49m

$895

Washington, D.C.Singapore

DCA - SIN

DCASIN

Washington, D.C. Reagan-National

dom. 9/14

6:59 am-7:05 am

2 stops36h 06m

Singapore Changi

jue. 10/2

9:10 am-12:08 pm

2 stops38h 58m

$896

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/26

Showing 1-10 of 60 results
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Best time to book a flight from Reagan-National to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia 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 Southeast Asia

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Southeast Asia (average of $923). Flying from Washington, D.C. Reagan-National Airport to Southeast Asia in December is currently the most expensive (average of $1,539). 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 YJX?

Find hourly flight availability from Reagan-National to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 27, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Southeast Asia as you normally would.

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. 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 Southeast Asia. Reviews last updated agosto 27, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Southeast Asia, such as Korean Air, Japan Airlines, and Cathay Pacific. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

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.

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

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.

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

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.

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

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.

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

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.

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Overall

8.4

Crew

8.7

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 Reagan-National to Southeast Asia. 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 Southeast Asia?

    There are many flights that can get you from Washington, D.C. Reagan-National Airport to Southeast Asia in 28h 28m. Fly via Korean Air, American Airlines, or China Airlines to get the fastest option. The distance between Washington, D.C. Reagan-National Airport and Southeast Asia is about 8990 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. Reagan-National Airport to Southeast Asia one-way?

    To fly one-way, consider booking your trip with Korean Air, which is currently one of the cheapest options available, starting at $427. Air Canada flights start at $432 while deals on Cathay Pacific start at $537 one-way.

  • What are the most popular routes from Washington, D.C. Reagan-National Airport to Southeast Asia?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Reagan-National to Southeast Asia 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 Southeast Asia?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Southeast Asia (average of $923). Flying from Washington, D.C. Reagan-National Airport to Southeast Asia in December is currently the most expensive (average of $1,539). 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 Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Reagan-National to Southeast Asia

Discover the top 8 airlines that operate flights from Reagan-National to Southeast Asia. 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 agosto 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$756Average$1,230FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$857Average$1,422FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$893Average$1,655FlexibilityNo cancel feeOn-time69%
ANACheapest$937Average$1,136FlexibilityNo cancel feeOn-time80%
Philippine AirlinesCheapest$1,043Average$1,755FlexibilityNo cancel feeOn-time60%
Cathay PacificCheapest$1,063Average$1,285FlexibilityNo cancel feeOn-time72%
Japan AirlinesCheapest$1,086Average$1,592FlexibilityNo cancel feeOn-time79%
Asiana AirlinesCheapest$1,415Average$1,415FlexibilityNo cancel feeOn-time76%

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