How long is the flight from Washington, D.C. to Southeast Asia?

There are many flights that can get you from Washington, D.C. to Southeast Asia in 26h 50m. Fly via Turkish Airlines, JetBlue, or United Airlines to get the fastest option. There are 8792 mi between Washington, D.C. and Southeast Asia. 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. to Southeast Asia one-way?

One-way options have recently been found by users for as low as $394 on Korean Air. Other airlines that offer cheap prices include Etihad Airways from $401 and Air India from $423 one-way.

In terms of precipitation, rainfall in Southeast Asia ranges from 0.4 - 15.7 inches per month. July is typically the wettest month, when rainfall can reach 15.7 in. February is typically the driest time to visit Southeast Asia when rainfall is around 0.4 in.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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

When deciding which route to take from Washington, D.C. to Southeast Asia consider Washington, D.C. Dulles Intl - Bangkok Suvarnabhumi, Baltimore/Washington - Bangkok Suvarnabhumi or Washington, D.C. Dulles Intl - Ho Chi Minh City as they are the most popular.

What are the most popular airlines that fly from Washington, D.C. to Southeast Asia?

When booking a flight from Washington, D.C. to Southeast Asia, you may want to consider flying on Korean Air, ANA or Qatar Airways as they are the most popular for this route.

Can I find deals for flights from Washington, D.C. to Southeast Asia that include hotel bookings?

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

How can I find direct flights from Washington, D.C. to Southeast Asia?

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

Can I find deals for business class flights from Washington, D.C. to Southeast Asia?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$364+ Flights from Washington, D.C. to Southeast Asia

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Cheap flight deals from Washington, D.C. to Southeast Asia

Cheapest flights from Washington, D.C. to Southeast Asia
Explore the most affordable flight options available from Washington, D.C. to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

Mon 12/2912:20 pmIAD - BKK

1 stop28h 50mUnited Airlines

Tue 1/69:10 amBKK - IAD

1 stop42h 30mUnited Airlines

Deal found 12/20

$919

Mon 12/298:05 pmIAD - BKK

1 stop28h 10mJetBlue

Fri 1/163:00 amBKK - IAD

1 stop24h 55mJetBlue

Deal found 12/22

$923

Tue 12/301:30 pmIAD - BKK

1 stop26h 50mTurkish Airlines

Thu 1/225:50 amBKK - IAD

1 stop25h 30mTurkish Airlines

Deal found 12/22

$931

Wed 12/315:59 pmDCA - SGN

2 stops40h 56mUnited Airlines

Tue 1/2011:05 pmSGN - DCA

2 stops33h 54mUnited Airlines

Deal found 12/22

$978

Sun 12/2811:10 amIAD - BKK

1 stop30h 00mUnited Airlines

Sat 1/179:10 amBKK - IAD

2 stops24h 07mUnited Airlines

Deal found 12/22

$1,009

Wed 12/316:30 amBWI - SGN

2 stops29h 45mUnited Airlines

Sun 1/1811:05 pmSGN - BWI

2 stops34h 16mUnited Airlines

Deal found 12/22

$1,023

Wed 12/318:15 amBWI - SGN

2 stops28h 00mUnited Airlines

Tue 1/206:00 amSGN - BWI

2 stops27h 26mUnited Airlines

Deal found 12/21

$1,034

Wed 12/3112:20 pmIAD - BKK

2 stops35h 05mUnited Airlines

Mon 2/164:55 pmBKK - IAD

2 stops24h 31mUnited Airlines

Deal found 12/22

$1,052

Wed 12/316:00 amIAD - SGN

2 stops27h 50mUnited Airlines

Mon 1/2611:05 pmSGN - IAD

1 stop28h 35mUnited Airlines

Deal found 12/22

$1,054

Wed 12/316:00 amIAD - SGN

2 stops27h 50mUnited Airlines

Thu 1/227:30 amSGN - IAD

2 stops29h 29mUnited Airlines

Deal found 12/22

$1,067

Mon 12/2910:10 pmIAD - SGN

3 stops36h 45mUnited Airlines

Sun 1/1811:05 pmSGN - IAD

2 stops34h 08mUnited Airlines

Deal found 12/22

$1,068

Tue 12/307:00 amDCA - SGN

2 stops27h 55mUnited Airlines

Sun 1/1811:05 pmSGN - DCA

2 stops34h 47mUnited Airlines

Deal found 12/22

$1,072

Best flights from Washington, D.C. to Southeast Asia
Discover carefully curated flight deals from Washington, D.C. to Southeast Asia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

Thu 1/151:30 pmIAD - BKK

1 stop26h 50mTurkish Airlines

Thu 3/1210:10 amBKK - IAD

1 stop37h 35mTurkish Airlines

Deal found 12/22

$900

Mon 12/298:05 pmIAD - BKK

1 stop28h 10mJetBlue

Fri 1/163:00 amBKK - IAD

1 stop24h 55mJetBlue

Deal found 12/22

$923

Mon 12/298:20 amIAD - BKK

2 stops32h 50mUnited Airlines

Tue 1/69:10 amBKK - IAD

1 stop42h 30mUnited Airlines

Deal found 12/20

$923

Wed 2/46:05 amDCA - BKK

2 stops30h 40mDelta

Tue 2/1012:55 amBKK - DCA

2 stops30h 02mDelta

Deal found 12/21

$928

Wed 4/810:00 amDCA - BKK

2 stops26h 40mKorean Air

Fri 5/111:30 pmBKK - DCA

2 stops33h 04mKorean Air

Deal found 12/20

$974

Tue 2/36:04 pmIAD - MNL

2 stops26h 51mMultiple Airlines

Mon 2/234:55 pmMNL - IAD

2 stops37h 25mMultiple Airlines

Deal found 12/22

$996

Tue 3/101:20 pmIAD - BKK

1 stop28h 50mUnited Airlines

Tue 3/244:55 pmBKK - IAD

2 stops34h 45mUnited Airlines

Deal found 12/20

$936

Thu 2/56:05 amDCA - BKK

2 stops30h 50mDelta

Thu 2/129:40 amBKK - DCA

2 stops24h 20mDelta

Deal found 12/22

$953

Sun 1/117:00 amDCA - BKK

2 stops29h 55mKorean Air

Tue 3/109:30 pmBKK - DCA

2 stops27h 14mKorean Air

Deal found 12/22

$974

Wed 3/48:15 amIAD - BKK

3 stops39h 10mUnited Airlines

Sun 3/154:55 pmBKK - IAD

2 stops34h 45mUnited Airlines

Deal found 12/22

$945

Thu 2/52:35 pmIAD - DMK

2 stops25h 50mMultiple Airlines

Sun 3/221:40 pmDMK - IAD

2 stops31h 25mMultiple Airlines

Deal found 12/20

$1,045

Thu 2/57:00 amIAD - BKK

2 stops29h 55mDelta

Wed 2/1111:15 pmBKK - IAD

2 stops29h 13mDelta

Deal found 12/22

$953

Tue 3/312:35 pmIAD - BKK

3 stops34h 50mUnited Airlines

Sun 3/154:55 pmBKK - IAD

2 stops34h 45mUnited Airlines

Deal found 12/21

$945

Thu 1/296:10 pmBWI - MNL

2 stops32h 45mMultiple Airlines

Tue 2/1710:55 amMNL - BWI

2 stops43h 51mMultiple Airlines

Deal found 12/20

$1,046

Wed 1/286:00 amBWI - SGN

2 stops28h 25mDelta

Sun 3/111:50 pmSGN - BWI

2 stops36h 45mDelta

Deal found 12/22

$965

Tue 3/34:11 pmDCA - BKK

3 stops31h 14mUnited Airlines

Wed 3/114:55 pmBKK - DCA

3 stops26h 56mUnited Airlines

Deal found 12/21

$949

Fri 3/133:35 pmIAD - DMK

2 stops23h 55mMultiple Airlines

Fri 3/201:40 pmDMK - IAD

2 stops31h 25mMultiple Airlines

Deal found 12/22

$1,049

Tue 1/276:00 amBWI - SGN

2 stops28h 25mDelta

Sun 3/111:50 pmSGN - BWI

2 stops36h 45mDelta

Deal found 12/22

$965

Thu 5/141:15 pmIAD - MNL

1 stop33h 40mKorean Air

Wed 6/103:10 amMNL - IAD

1 stop20h 05mKorean Air

Deal found 12/22

$1,238

Tue 4/711:55 amDCA - BKK

3 stops34h 50mUnited Airlines

Mon 5/43:40 pmBKK - DCA

3 stops28h 16mUnited Airlines

Deal found 12/20

$949

Thu 3/58:25 amBWI - MNL

1 stop32h 15mMultiple Airlines

Mon 3/2310:20 pmMNL - BWI

1 stop29h 20mMultiple Airlines

Deal found 12/21

$1,056

Mon 1/266:00 amBWI - SGN

2 stops28h 25mDelta

Sun 3/111:50 pmSGN - BWI

2 stops28h 48mDelta

Deal found 12/22

$965

Tue 3/37:13 pmIAD - BKK

2 stops28h 12mUnited Airlines

Tue 3/104:55 pmBKK - IAD

3 stops29h 31mUnited Airlines

Deal found 12/22

$949

Tue 3/177:05 amIAD - MNL

2 stops38h 50mMultiple Airlines

Tue 4/74:50 pmMNL - IAD

2 stops60h 15mMultiple Airlines

Deal found 12/22

$1,061

Thu 1/296:05 amBWI - SGN

2 stops28h 20mDelta

Sun 3/111:50 pmSGN - BWI

2 stops28h 48mDelta

Deal found 12/22

$965

Mon 1/127:00 amDCA - BKK

2 stops40h 25mUnited Airlines

Tue 3/104:55 pmBKK - DCA

3 stops34h 04mUnited Airlines

Deal found 12/21

$953

Tue 2/310:10 amBWI - MNL

2 stops51h 20mMultiple Airlines

Tue 2/1010:55 amMNL - BWI

2 stops44h 19mMultiple Airlines

Deal found 12/19

$1,061

Tue 1/276:05 amDCA - SGN

2 stops28h 20mDelta

Sun 3/111:50 pmSGN - DCA

2 stops34h 10mDelta

Deal found 12/22

$965

Mon 1/1910:05 pmIAD - BKK

2 stops49h 20mUnited Airlines

Wed 1/284:55 pmBKK - IAD

2 stops26h 19mUnited Airlines

Deal found 12/21

$953

Mon 1/267:35 amDCA - SGN

2 stops26h 50mDelta

Sun 3/111:50 pmSGN - DCA

2 stops34h 43mDelta

Deal found 12/22

$965

Last-minute flights from Washington, D.C. to Southeast Asia
Discover last-minute flight deals from Washington, D.C. to Southeast Asia. Data last updated December 23, 2025 and is based on user searches.

Thu 1/88:05 pmIAD - BKK

1 stop29h 00mQatar Airways

Thu 2/122:00 amBKK - IAD

1 stop25h 55mQatar Airways

Deal found 12/21

$903

Sat 1/108:05 pmIAD - BKK

1 stop34h 20mQatar Airways

Thu 1/298:15 amBKK - IAD

1 stop36h 05mQatar Airways

Deal found 12/21

$892

Sun 1/182:35 pmIAD - BKK

1 stop20h 50mEtihad Airways

Tue 3/102:55 amBKK - IAD

1 stop42h 10mEtihad Airways

Deal found 12/22

$880

Sun 1/1810:40 amIAD - BKK

1 stop20h 45mQatar Airways

Wed 2/47:50 pmBKK - IAD

1 stop32h 05mQatar Airways

Deal found 12/20

$884

Sun 1/182:35 pmIAD - BKK

1 stop20h 50mEtihad Airways

Mon 3/99:25 amBKK - IAD

1 stop35h 40mEtihad Airways

Deal found 12/22

$901

Sun 1/182:35 pmIAD - BKK

1 stop20h 50mEtihad Airways

Sat 2/78:05 amBKK - IAD

2 stops61h 00mEtihad Airways

Deal found 12/20

$904

Mon 1/198:20 amIAD - BKK

2 stops34h 10mANA

Mon 2/22:25 pmBKK - IAD

2 stops33h 21mANA

Deal found 12/22

$879

Mon 1/192:35 pmIAD - BKK

1 stop20h 50mEtihad Airways

Sat 2/78:05 amBKK - IAD

2 stops61h 00mEtihad Airways

Deal found 12/20

$897

Wed 1/212:35 pmIAD - BKK

1 stop20h 50mEtihad Airways

Sat 2/72:55 amBKK - IAD

1 stop42h 10mEtihad Airways

Deal found 12/20

$886

Wed 1/2110:40 amIAD - BKK

1 stop20h 45mQatar Airways

Sat 2/78:15 amBKK - IAD

1 stop36h 05mQatar Airways

Deal found 12/20

$889

Wed 1/212:35 pmIAD - BKK

1 stop20h 50mEtihad Airways

Wed 1/287:35 pmBKK - IAD

2 stops49h 30mEtihad Airways

Deal found 12/22

$895

Fri 1/232:35 pmIAD - BKK

1 stop39h 25mEtihad Airways

Mon 2/22:55 amBKK - IAD

1 stop42h 10mEtihad Airways

Deal found 12/20

$900

One-way flights from Washington, D.C. to Southeast Asia
Search for one-way flight options from Washington, D.C. to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Fri 2/137:09 pmBWI - MNL

2 stops47h 46mMultiple Airlines

Deal found 12/22

$364

Wed 1/218:00 amBWI - BKK

3 stops47h 35mMultiple Airlines

Deal found 12/22

$384

Tue 2/105:58 pmBWI - BKK

3 stops37h 37mMultiple Airlines

Deal found 12/22

$386

Tue 1/277:10 amBWI - BKK

3 stops48h 25mMultiple Airlines

Deal found 12/21

$387

Wed 2/116:50 pmBWI - BKK

3 stops36h 45mMultiple Airlines

Deal found 12/22

$388

Wed 1/287:10 amBWI - BKK

3 stops48h 25mMultiple Airlines

Deal found 12/21

$389

Mon 2/96:00 amBWI - BKK

3 stops49h 35mMultiple Airlines

Deal found 12/22

$391

Mon 1/268:08 pmBWI - BKK

3 stops51h 07mMultiple Airlines

Deal found 12/21

$403

Mon 1/1910:31 amBWI - BKK

3 stops45h 04mMultiple Airlines

Deal found 12/21

$404

Wed 1/287:10 amBWI - MNL

3 stops46h 35mMultiple Airlines

Deal found 12/19

$438

Sat 1/318:08 pmBWI - BKK

3 stops46h 22mMultiple Airlines

Deal found 12/21

$438

Sat 1/248:08 pmBWI - BKK

3 stops46h 22mMultiple Airlines

Deal found 12/21

$446

Find flight deals from Washington, D.C. to Southeast Asia

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$864 (oojo)
One-way from	$364 (Kiwi.com)
Popular in	December
Cheapest in	September
Average price	$1,705

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. (WAS) to Southeast Asia

Search Deals

One-way flight from Washington, D.C. (WAS) to Southeast Asia

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($102 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($37 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/15

1:30 pm-4:20 am

1 stop26h 50m

Bangkok Suvarnabhumi

Thu 3/12

10:10 am-12:45 pm

1 stop37h 35m

$900

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 12/29

8:05 pm-12:15 pm

1 stop28h 10m

Bangkok Suvarnabhumi

Fri 1/16

3:00 am-3:55 pm

1 stop24h 55m

$923

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 12/29

8:20 am-5:10 am

2 stops32h 50m

Bangkok Suvarnabhumi

Tue 1/6

9:10 am-3:40 pm

1 stop42h 30m

$923

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 2/4

6:05 am-12:45 am

2 stops30h 40m

Bangkok Suvarnabhumi

Tue 2/10

12:55 am-6:57 pm

2 stops30h 02m

$928

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 3/10

1:20 pm-5:10 am

1 stop28h 50m

Bangkok Suvarnabhumi

Tue 3/24

4:55 pm-4:40 pm

2 stops34h 45m

$936

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 3/4

8:15 am-11:25 am

3 stops39h 10m

Bangkok Suvarnabhumi

Sun 3/15

4:55 pm-4:40 pm

2 stops34h 45m

$945

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 3/3

12:35 pm-11:25 am

3 stops34h 50m

Bangkok Suvarnabhumi

Sun 3/15

4:55 pm-4:40 pm

2 stops34h 45m

$945

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 3/3

4:11 pm-11:25 am

3 stops31h 14m

Bangkok Suvarnabhumi

Wed 3/11

4:55 pm-8:51 am

3 stops26h 56m

$949

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 4/7

11:55 am-9:45 am

3 stops34h 50m

Bangkok Suvarnabhumi

Mon 5/4

3:40 pm-8:56 am

3 stops28h 16m

$949

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 3/3

7:13 pm-11:25 am

2 stops28h 12m

Bangkok Suvarnabhumi

Tue 3/10

4:55 pm-11:26 am

3 stops29h 31m

$949

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 60 results

...

Best time to book a flight from Washington, D.C. to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Washington, D.C. 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. to Southeast Asia

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Southeast Asia (average of $137). Flying from Washington, D.C. to Southeast Asia in February is currently the most expensive (average of $817). 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 WAS to YJX?

One of the essential ways to save on airfare from Washington, D.C. to Southeast Asia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 17% on airfare.

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

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

Reviews of airlines servicing Southeast Asia

Peruse reviews from past customers who have flown with Korean Air, Qatar Airways, and United Airlines from Washington, D.C. to Southeast Asia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,185 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Korean Air

8.4

Very good

1,185 reviews

Korean Air

8.4

Very good

1,185 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Qatar Airways

7.4

Good

3,690 reviews

Korean Air

8.4

Very good

1,185 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

United Airlines

7.4

Good

9,109 reviews

Korean Air

8.4

Very good

1,185 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Philippine Airlines

7.3

Good

943 reviews

Korean Air

8.4

Very good

1,185 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Turkish Airlines

7.3

Good

4,112 reviews

Korean Air

8.4

Very good

1,185 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

How long is the flight from Washington, D.C. to Southeast Asia?
There are many flights that can get you from Washington, D.C. to Southeast Asia in 26h 50m. Fly via Turkish Airlines, JetBlue, or United Airlines to get the fastest option. There are 8792 mi between Washington, D.C. and Southeast Asia. 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. to Southeast Asia one-way?
One-way options have recently been found by users for as low as $394 on Korean Air. Other airlines that offer cheap prices include Etihad Airways from $401 and Air India from $423 one-way.
What are the most popular routes from Washington, D.C. to Southeast Asia?
When deciding which route to take from Washington, D.C. to Southeast Asia consider Washington, D.C. Dulles Intl - Bangkok Suvarnabhumi, Baltimore/Washington - Bangkok Suvarnabhumi or Washington, D.C. Dulles Intl - Ho Chi Minh City as they are the most popular.
Can I find deals for flights from Washington, D.C. to Southeast Asia that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Southeast Asia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Southeast Asia.
Can I find deals for business class flights from Washington, D.C. to Southeast Asia?
Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Southeast Asia?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Southeast Asia (average of $137). Flying from Washington, D.C. to Southeast Asia in February is currently the most expensive (average of $817). 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

Top 10 airlines flying from Washington, D.C. to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$118	Average$160	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$162	Average$267	FlexibilityNo cancel fee	On-time62%
JetBlue	Cheapest$512	Average$1,774	FlexibilityNo cancel fee	On-time62%
Air China	Cheapest$565	Average$825	FlexibilityNo cancel fee	On-time67%
Air Canada	Cheapest$605	Average$1,289	FlexibilityNo cancel fee	On-time67%
Philippine Airlines	Cheapest$652	Average$1,528	FlexibilityNo cancel fee	On-time60%
Air India	Cheapest$702	Average$965	FlexibilityNo cancel fee	On-timeN/A
China Airlines	Cheapest$763	Average$1,583	FlexibilityNo cancel fee	On-time70%
Cathay Pacific	Cheapest$763	Average$1,240	FlexibilityNo cancel fee	On-time72%
Etihad Airways	Cheapest$788	Average$1,092	FlexibilityNo cancel fee	On-time75%

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$364+ Cheap flights from Washington, D.C. (WAS) 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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Washington, D.C. to Southeast Asia

Cheapest flights from Washington, D.C. to Southeast AsiaExplore the most affordable flight options available from Washington, D.C. to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

Explore the most affordable flight options available from Washington, D.C. to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

Find flight deals from Washington, D.C. to Southeast Asia

Keep the following information in mind while searching for Washington, D.C. to Southeast Asia flight deals. Data was last updated December 23, 2025.

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Best time to book a flight from Washington, D.C. to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Washington, D.C. with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Southeast Asia

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

What is the cheapest time of day to fly from WAS to YJX?

Find hourly flight availability from Washington, D.C. 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 23, 2025.

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

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

Reviews of airlines servicing Southeast Asia

Peruse reviews from past customers who have flown with Korean Air, Qatar Airways, and United Airlines from Washington, D.C. to Southeast Asia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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. to Southeast Asia?

What are the cheapest airlines to fly from Washington, D.C. to Southeast Asia one-way?

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

Can I find deals for flights from Washington, D.C. to Southeast Asia that include hotel bookings?

How can I find direct flights from Washington, D.C. to Southeast Asia?

Can I find deals for business class flights from Washington, D.C. to Southeast Asia?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Southeast Asia

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Top 10 airlines flying from Washington, D.C. to Southeast Asia

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Cheapest flights from Washington, D.C. to Southeast Asia
Explore the most affordable flight options available from Washington, D.C. to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.