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Southeast Asia

$394+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BKK
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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Find 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 November 4, 2025.

This ezTravel 易遊網 deal was found by Cheapflights users on 11/3. 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 ezTravel 易遊網 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/310:40 amIAD - BKK
1 stop20h 45mQatar Airways
Tue 12/92:00 amBKK - IAD
1 stop25h 55mQatar Airways
Deal found 11/3$853
This oojo deal was found by Cheapflights users on 11/3. 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.
Fri 11/2810:40 amIAD - BKK
1 stop20h 45mQatar Airways
Wed 12/178:30 pmBKK - IAD
1 stop31h 25mQatar Airways
Deal found 11/3$854
This Etihad Airways deal was found by Cheapflights users on 11/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:10 pmIAD - BKK
1 stop20h 45mEtihad Airways
Tue 3/38:55 amBKK - IAD
1 stop36h 10mEtihad Airways
Deal found 11/4$856
This Etihad Airways deal was found by Cheapflights users on 11/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:35 pmIAD - BKK
1 stop20h 45mEtihad Airways
Fri 1/162:40 pmBKK - IAD
1 stop30h 25mEtihad Airways
Deal found 11/4$857
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Thu 11/278:05 pmIAD - BKK
1 stop34h 20mQatar Airways
Sun 12/148:30 pmBKK - IAD
1 stop31h 25mQatar Airways
Deal found 11/2$859
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Thu 11/278:05 pmIAD - BKK
1 stop34h 20mQatar Airways
Fri 12/123:00 amBKK - IAD
1 stop41h 20mQatar Airways
Deal found 11/2$862
This oojo deal was found by Cheapflights users on 11/3. 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.
Tue 11/46:13 pmIAD - BKK
2 stops30h 22mSTARLUX Airlines
Tue 11/111:45 pmBKK - IAD
2 stops28h 38mSTARLUX Airlines
Deal found 11/3$864
This oojo deal was found by Cheapflights users on 11/2. 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.
Tue 11/46:13 pmIAD - BKK
2 stops34h 17mSTARLUX Airlines
Tue 11/181:45 pmBKK - IAD
2 stops28h 38mSTARLUX Airlines
Deal found 11/2$865
This FlightHub deal was found by Cheapflights users on 11/3. 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.
Tue 11/46:13 pmIAD - BKK
2 stops30h 22mSTARLUX Airlines
Sun 11/165:40 pmBKK - IAD
2 stops48h 43mSTARLUX Airlines
Deal found 11/3$868
This oojo deal was found by Cheapflights users on 11/3. 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 11/106:13 pmIAD - BKK
2 stops34h 17mMultiple Airlines
Mon 11/171:45 pmBKK - IAD
2 stops28h 38mMultiple Airlines
Deal found 11/3$869
This oojo deal was found by Cheapflights users on 11/3. 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.
Tue 11/46:13 pmIAD - BKK
2 stops30h 22mMultiple Airlines
Wed 12/105:40 pmBKK - IAD
2 stops48h 26mMultiple Airlines
Deal found 11/3$873
This oojo deal was found by Cheapflights users on 11/2. 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 11/106:13 pmIAD - BKK
2 stops34h 17mMultiple Airlines
Tue 11/181:45 pmBKK - IAD
2 stops28h 38mMultiple Airlines
Deal found 11/2$874

Cheap 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 November 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$845
(Orbitz)

One-way from

$447
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$1,227
Provider with most accurate pricing for Washington, D.C. (WAS)-Manila Ninoy Aquino Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Manila Ninoy Aquino Intl flights.
Search Deals
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. 8% potential increase in price ($119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 4, 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 1/14

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Sun 2/8

7:35 pm-9:05 am

2 stops49h 30m

$872

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sat 1/24

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Sat 2/7

9:25 am-9:05 am

1 stop35h 40m

$887

Washington, D.C.Hanoi

IAD - HAN

IADHAN

Washington, D.C. Dulles Intl

Wed 11/26

11:50 am-11:10 am

1 stop35h 20m

Hanoi Noibai

Sun 12/7

11:05 pm-7:19 pm

2 stops32h 14m

$926

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 11/26

11:50 am-9:30 pm

1 stop45h 40m

Bangkok Suvarnabhumi

Mon 12/22

11:15 pm-9:50 am

1 stop22h 35m

$936

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/29

6:45 pm-11:25 am

2 stops28h 40m

Bangkok Suvarnabhumi

Wed 2/11

4:55 pm-7:14 am

2 stops26h 19m

$944

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/15

6:45 pm-11:25 am

2 stops28h 40m

Bangkok Suvarnabhumi

Thu 2/26

4:55 pm-5:26 am

2 stops24h 31m

$944

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 11/24

6:30 am-5:10 am

2 stops34h 40m

Bangkok Suvarnabhumi

Thu 12/4

4:55 pm-7:20 am

3 stops26h 25m

$949

Washington, D.C.Ho Chi Minh City

IAD - SGN

IADSGN

Washington, D.C. Dulles Intl

Wed 1/7

8:05 pm-7:15 am

1 stop23h 10m

Ho Chi Minh City

Wed 2/4

7:40 pm-3:55 pm

1 stop32h 15m

$955

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 1/18

10:20 pm-11:25 am

2 stops49h 05m

Bangkok Suvarnabhumi

Mon 2/16

4:55 pm-11:49 am

3 stops30h 54m

$956

Washington, D.C.Ho Chi Minh City

IAD - SGN

IADSGN

Washington, D.C. Dulles Intl

Mon 1/12

7:45 pm-9:50 pm

2 stops38h 05m

Ho Chi Minh City

Sun 2/8

11:05 pm-9:10 am

1 stop22h 05m

$960

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

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 December is currently the most expensive (average of $922). 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 November 4, 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 November 4, 2025.
Get a feel of what it's like to fly with Korean Air, ANA, and Emirates 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
1,160 reviews

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
1,160 reviews
Korean Air
8.4
Very good
1,160 reviews

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
1,000 reviews
Korean Air
8.4
Very good
1,160 reviews

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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!!
Emirates
8.1
Very good
3,401 reviews
Korean Air
8.4
Very good
1,160 reviews

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
8,999 reviews
Korean Air
8.4
Very good
1,160 reviews

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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
4,038 reviews
Korean Air
8.4
Very good
1,160 reviews

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

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 20h 45m. 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?

    $448 is the cheapest one-way deal found within the past few days, from IndiGo. You may also be able to find cheap deals on STARLUX Airlines and Etihad Airways, with prices starting from $462 and $465, 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 December is currently the most expensive (average of $922). 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 Suvarnabhumi flights
Dulles Intl to Narita flights
Dulles Intl to New Delhi flights
Reagan-National to Narita flights
Reagan-National to Haneda flights
Dulles Intl to Hyderabad flights
Reagan-National to New Delhi flights
Dulles Intl to Incheon Intl flights
Baltimore to Narita flights
Baltimore to Haneda flights
Dulles Intl to Mumbai flights
Baltimore to New Delhi flights
Reagan-National to Hyderabad flights
Reagan-National to Suvarnabhumi flights
Baltimore to Hyderabad flights
Baltimore to Suvarnabhumi flights
Dulles Intl to Ho Chi Minh City flights
Dulles Intl to Bangalore flights
Reagan-National to Mumbai flights
Dulles Intl to Manila flights
Reagan-National to Bangalore flights
Dulles Intl to Don Mueang Intl flights
Baltimore to Bangalore flights
Baltimore to Mumbai flights
Dulles Intl to Islamabad flights
Dulles Intl to Dhaka flights
Dulles Intl to Taiwan Taoyuan Intl flights
Dulles Intl to Hongqiao Intl flights
Dulles Intl to Lahore flights
Dulles Intl to Chennai flights
Dulles Intl to Ahmedabad flights
Baltimore to Incheon Intl flights
Reagan-National to Incheon Intl flights
Reagan-National to Manila flights
Baltimore to Manila flights
Reagan-National to Ahmedabad flights
Dulles Intl to Gimpo Intl flights
Reagan-National to Chennai flights
Reagan-National to Ho Chi Minh City flights
Baltimore to Chennai flights
Dulles Intl to Hong Kong flights
Reagan-National to Hongqiao Intl flights
Baltimore to Ahmedabad flights
Reagan-National to Taiwan Taoyuan Intl flights
Baltimore to Ho Chi Minh City flights
Baltimore to Taiwan Taoyuan Intl flights
Dulles Intl to Pu Dong flights
Reagan-National to Hong Kong flights
Dulles Intl to Karachi 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$162Average$267FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$565Average$854FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$700Average$976FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$763Average$1,248FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$777Average$1,330FlexibilityNo cancel feeOn-time67%
DeltaCheapest$798Average$1,365FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$829Average$1,085FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$846Average$1,355FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$877Average$1,498FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$894Average$1,286FlexibilityNo cancel feeOn-time69%

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