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Southeast Asia

$411+ Cheap flights from Dulles Intl (IAD) 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Dulles Intl to Southeast Asia

Cheapest flights from Dulles Intl to Southeast Asia
Explore the most affordable flight options available from Dulles Intl to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This JetBlue deal was found by Cheapflights users on 12/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:05 pmIAD - BKK
1 stop22h 10mJetBlue
Thu 1/153:00 amBKK - IAD
1 stop24h 55mJetBlue
Deal found 12/15$923
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/3112:20 pmIAD - BKK
1 stop28h 50mUnited Airlines
Fri 1/164:55 pmBKK - IAD
2 stops26h 19mUnited Airlines
Deal found 12/15$980
This FlightHub deal was found by Cheapflights users on 12/16. 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 12/311:30 pmIAD - BKK
1 stop31h 10mTurkish Airlines
Fri 1/165:50 amBKK - IAD
1 stop41h 55mTurkish Airlines
Deal found 12/16$985
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/3112:20 pmIAD - BKK
2 stops35h 05mUnited Airlines
Mon 2/24:55 pmBKK - IAD
2 stops34h 45mUnited Airlines
Deal found 12/17$1,048
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/3010:05 pmIAD - SGN
2 stops35h 45mUnited Airlines
Mon 1/1911:05 pmSGN - IAD
2 stops34h 08mUnited Airlines
Deal found 12/17$1,064
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/318:20 amIAD - SGN
2 stops27h 55mUnited Airlines
Mon 1/197:30 amSGN - IAD
2 stops29h 29mUnited Airlines
Deal found 12/17$1,070
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/296:30 amIAD - SGN
2 stops28h 25mUnited Airlines
Tue 1/2011:05 pmSGN - IAD
2 stops32h 30mUnited Airlines
Deal found 12/16$1,072
This KAYAK deal was found by Cheapflights users on 12/15. 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 12/291:30 pmIAD - BKK
1 stop31h 10mTurkish Airlines
Sat 1/175:50 amBKK - IAD
1 stop41h 55mTurkish Airlines
Deal found 12/15$1,074
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/296:30 amIAD - SGN
2 stops28h 25mUnited Airlines
Wed 1/217:30 amSGN - IAD
2 stops24h 05mUnited Airlines
Deal found 12/16$1,075
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/318:20 amIAD - SGN
2 stops27h 55mUnited Airlines
Thu 1/226:00 amSGN - IAD
2 stops24h 29mUnited Airlines
Deal found 12/17$1,078
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/296:30 amIAD - SGN
2 stops28h 25mUnited Airlines
Sun 1/1811:05 pmSGN - IAD
2 stops34h 12mUnited Airlines
Deal found 12/16$1,083
This JetBlue deal was found by Cheapflights users on 12/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:05 pmIAD - SGN
1 stop23h 10mJetBlue
Tue 1/207:40 pmSGN - IAD
1 stop24h 40mJetBlue
Deal found 12/16$1,100

Find flight deals from Dulles Intl to Southeast Asia

Keep the following information in mind while searching for Dulles Intl to Southeast Asia flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$871
(FlightHub)

One-way from

$411
(Booking.com)

Popular in

December

Cheapest in

September

Average price

$1,718
Provider with most accurate pricing for Washington, D.C. (WAS)-Manila Ninoy Aquino Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Manila Ninoy Aquino Intl flights.
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From Washington, D.C. Dulles Intl to Southeast Asia
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Southeast Asia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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 December 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Southeast Asia that are best for you.

Fly from

Dulles Intl

Fly to

Southeast Asia

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 1/28

7:30 am-12:45 am

2 stops29h 15m

Bangkok Suvarnabhumi

Thu 2/19

9:40 am-11:55 pm

2 stops26h 15m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 2/17

11:50 am-11:20 pm

1 stop23h 30m

Bangkok Suvarnabhumi

Wed 2/25

12:55 am-7:09 pm

2 stops30h 14m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/7

2:21 pm-9:45 am

3 stops32h 24m

Bangkok Suvarnabhumi

Mon 4/27

9:35 am-10:05 am

1 stop35h 30m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 2/5

7:00 am-12:55 am

2 stops29h 55m

Bangkok Suvarnabhumi

Tue 3/24

2:05 am-11:49 pm

2 stops32h 44m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/16

6:00 am-12:45 am

2 stops30h 45m

Bangkok Suvarnabhumi

Wed 2/25

2:05 am-11:55 pm

2 stops33h 50m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 2/17

6:00 am-12:55 am

2 stops30h 55m

Bangkok Suvarnabhumi

Wed 2/25

2:05 am-11:55 pm

2 stops33h 50m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/29

7:30 am-12:45 am

2 stops29h 15m

Bangkok Suvarnabhumi

Thu 2/12

9:40 am-11:10 pm

2 stops25h 30m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 1/20

6:45 pm-11:25 am

2 stops28h 40m

Bangkok Suvarnabhumi

Wed 1/28

4:55 pm-3:40 pm

2 stops34h 45m

$940

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 2/22

10:05 pm-5:10 am

2 stops43h 05m

Bangkok Suvarnabhumi

Wed 3/11

4:55 pm-4:40 pm

2 stops34h 45m

$941

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 1/25

10:20 pm-12:20 am

2 stops38h 00m

Bangkok Suvarnabhumi

Sun 2/8

4:55 pm-3:40 pm

2 stops34h 45m

$944

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Dulles Intl 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. Dulles Intl Airport to Southeast Asia

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Southeast Asia?

Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Southeast Asia (average of $616). Flying from Washington, D.C. Dulles Intl Airport to Southeast Asia in July is currently the most expensive (average of $919). 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 IAD to YJX?

Find hourly flight availability from Dulles Intl 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 December 18, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Southeast Asia in the evening. Doing so could potentially save you 13% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Southeast Asia?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Southeast Asia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Southeast Asia flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.
Get a feel of what it's like to fly with Korean Air, ANA, and Qatar Airways from Washington, D.C. Dulles Intl Airport to Southeast Asia by reading reviews from past customers. 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
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,186 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
ANA
8.4
Very good
1,030 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Qatar Airways
7.4
Good
3,686 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
9,093 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Turkish Airlines
7.3
Good
4,105 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl 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. Dulles Intl Airport to Southeast Asia?

    Departing from Washington, D.C. Dulles Intl Airport to Southeast Asia will take you 23h 30m. The distance from Washington, D.C. Dulles Intl Airport to Southeast Asia is about 8792 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. Dulles Intl Airport to Southeast Asia one-way?

    $394 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on Etihad Airways and Air India, with prices starting from $401 and $423, respectively.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Southeast Asia?

    While some choose either Washington, D.C. Dulles Intl - Ho Chi Minh City or Washington, D.C. Dulles Intl - Manila Ninoy Aquino Intl, Washington, D.C. Dulles Intl - Bangkok Suvarnabhumi is the most popular route from Washington, D.C. Dulles Intl Airport to Southeast Asia.

  • Can I find deals for flights from Dulles Intl to Southeast Asia that include hotel bookings?

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

  • How can I find direct flights from Dulles Intl to Southeast Asia?

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

  • Can I find deals for business class flights from Dulles Intl to Southeast Asia?

    Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to Southeast Asia?

    Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Southeast Asia (average of $616). Flying from Washington, D.C. Dulles Intl Airport to Southeast Asia in July is currently the most expensive (average of $919). 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 Dulles Intl to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Haneda flights
Dulles Intl to Narita flights
Dulles Intl to Suvarnabhumi flights
Reagan-National to Narita flights
Reagan-National to Haneda flights
Baltimore to Narita flights
Baltimore to Haneda flights
Dulles Intl to Hyderabad flights
Dulles Intl to New Delhi flights
Dulles Intl to Incheon Intl flights
Baltimore to Suvarnabhumi flights
Reagan-National to New Delhi flights
Reagan-National to Hyderabad flights
Dulles Intl to Mumbai flights
Baltimore to Hyderabad flights
Reagan-National to Suvarnabhumi flights
Dulles Intl to Ho Chi Minh City flights
Baltimore to New Delhi flights
Dulles Intl to Manila flights
Reagan-National to Mumbai flights
Baltimore to Mumbai flights
Dulles Intl to Hongqiao Intl flights
Dulles Intl to Ahmedabad flights
Dulles Intl to Don Mueang Intl flights
Dulles Intl to Taiwan Taoyuan Intl flights
Dulles Intl to Islamabad flights
Reagan-National to Hongqiao Intl flights
Baltimore to Manila flights
Dulles Intl to Chennai flights
Reagan-National to Ahmedabad flights
Reagan-National to Manila flights
Dulles Intl to Lahore flights
Dulles Intl to Hong Kong flights
Baltimore to Incheon Intl flights
Reagan-National to Incheon Intl flights
Dulles Intl to Pu Dong flights
Dulles Intl to Capital flights
Dulles Intl to Gimpo Intl flights
Dulles Intl to Bangalore flights
Baltimore to Hongqiao Intl flights
Baltimore to Ahmedabad flights
Reagan-National to Ho Chi Minh City flights
Dulles Intl to Dhaka flights
Reagan-National to Pu Dong flights
Baltimore to Ho Chi Minh City flights
Baltimore to Pu Dong flights
Reagan-National to Hong Kong flights
Reagan-National to Chennai flights
Dulles Intl to Kathmandu flights
Baltimore to Chennai flights

Top 10 airlines flying from Dulles Intl to Southeast Asia

Discover the top 10 airlines that operate flights from Dulles Intl 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$162Average$240FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$512Average$1,765FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$565Average$825FlexibilityNo cancel feeOn-time67%
Air CanadaCheapest$671Average$1,328FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$702Average$963FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$763Average$1,123FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$768Average$1,075FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$787Average$1,092FlexibilityNo cancel feeOn-time75%
DeltaCheapest$798Average$1,296FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$846Average$1,138FlexibilityNo cancel feeOn-time81%

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