$378 Find Cheap Flights from Washington, D.C. to Southeast Asia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Southeast Asia departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Southeast Asia.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Southeast Asia.
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Cheap Flights from Washington, D.C. to Southeast Asia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Manila
Manila2 stops$967
Ho Chi Minh City
Ho Chi Minh City2 stops$887
Singapore
Singapore1 stop$1,115
Denpasar
Denpasar1 stop$870
Kuala Lumpur
Kuala Lumpur1 stop$1,072
Phuket City
Phuket City2 stops$931
Cebu City
Cebu City2 stops$926
Chiang Mai
Chiang Mai2 stops$918
Angeles City
Angeles City2 stops$975
Ko Samui
Ko Samui2 stops$1,072
Vientiane
Vientiane2 stops$1,107
Davao City
Davao City2 stops$1,215
Krabi
Krabi1 stop$1,188
Manila
Manila2 stops$967
Ho Chi Minh City
Ho Chi Minh City2 stops$887
Singapore
Singapore1 stop$1,115
Denpasar
Denpasar1 stop$870
Kuala Lumpur
Kuala Lumpur1 stop$1,072
Phuket City
Phuket City2 stops$931
Cebu City
Cebu City2 stops$926
Chiang Mai
Chiang Mai2 stops$918
Angeles City
Angeles City2 stops$975
Ko Samui
Ko Samui2 stops$1,072
Vientiane
Vientiane2 stops$1,107
Davao City
Davao City2 stops$1,215
Krabi
Krabi1 stop$1,188

Book Cheap Washington, D.C. to Southeast Asia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Southeast Asia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Southeast Asia

Wed, Feb 25 - Wed, Mar 11
Etihad Airways Logo
2:35 pm - 11:35 am
IAD
-
DPS
32h 00m1 stop
Etihad Airways Logo
6:45 pm - 10:05 am
DPS
-
IAD
27h 20m1 stop
$870Etihad Airways
Wed, Mar 4 - Wed, Mar 11
Etihad Airways Logo
2:35 pm - 11:35 am
IAD
-
DPS
32h 00m1 stop
Etihad Airways Logo
6:45 pm - 10:05 am
DPS
-
IAD
27h 20m1 stop
$872Etihad Airways
Sat, Mar 7 - Sun, Mar 15
Turkish Airlines Logo
9:15 pm - 7:30 pm
IAD
-
DPS
33h 15m1 stop
Turkish Airlines Logo
9:10 pm - 8:20 pm
DPS
-
IAD
35h 10m1 stop
$876Turkish Airlines
Sat, Mar 7 - Sun, Mar 15
Turkish Airlines Logo
1:30 pm - 7:30 pm
IAD
-
DPS
41h 00m1 stop
Turkish Airlines Logo
9:10 pm - 12:45 pm
DPS
-
IAD
27h 35m1 stop
$883Turkish Airlines
Mon, Feb 16 - Sun, Mar 1
Qatar Airways Logo
8:05 pm - 7:25 pm
IAD
-
BKK
35h 20m1 stop
Qatar Airways Logo
6:55 pm - 3:55 pm
BKK
-
IAD
33h 00m1 stop
$891Qatar Airways
Sun, Jan 18 - Sun, Feb 1
Korean Air Logo
5:00 pm - 12:45 am
DCA
-
BKK
43h 45m2 stops
Korean Air Logo
2:05 am - 1:53 pm
BKK
-
DCA
47h 48m2 stops
$901Korean Air
Sun, Jan 18 - Mon, Feb 2
Korean Air Logo
5:00 pm - 12:45 am
DCA
-
BKK
43h 45m2 stops
Korean Air Logo
9:40 am - 4:29 pm
BKK
-
DCA
42h 49m2 stops
$924Korean Air
Tue, Apr 7 - Wed, Apr 22
United Airlines Logo
2:00 pm - 4:35 am
DCA
-
BKK
27h 35m2 stops
United Airlines Logo
7:00 am - 9:04 pm
BKK
-
DCA
25h 04m2 stops
$936United Airlines
Thu, Jan 15 - Thu, Mar 12
United Airlines Logo
10:30 am - 11:25 am
DCA
-
BKK
36h 55m3 stops
United Airlines Logo
7:10 am - 9:45 pm
BKK
-
DCA
25h 35m2 stops
$940United Airlines
Wed, Jan 14 - Thu, Jan 29
Qatar Airways Logo
8:05 pm - 10:00 am
IAD
-
SGN
49h 55m2 stops
Qatar Airways Logo
8:55 am - 3:55 pm
SGN
-
IAD
43h 00m1 stop
$946Qatar Airways
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Southeast Asia flights

Get data-powered insights and trends into flights from Washington, D.C. to Southeast Asia to help you find the cheapest flights, the best time to fly and much more.

Can I save money by flying with a layover from Washington, D.C. to Southeast Asia?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $420, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Southeast Asia is September, when tickets cost $963 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,787 and $1,370 respectively.

What’s the cheapest day of the week to fly from Washington, D.C. to Southeast Asia?

The average price of all round-trip flights from Washington, D.C. to Southeast Asia clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Washington, D.C. to Southeast Asia, look for departures on Saturdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Southeast Asia, Sunday is the cheapest day to fly and Saturday is the most expensive.

How far in advance should I book a flight from Washington, D.C. to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Southeast Asia, you should book around 4 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$378
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 40% increase in price.
Flight from Baltimore to Bangkok Suvarnabhumi Airport

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from Washington, D.C. to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. to Southeast Asia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington, D.C. to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington, D.C. to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Southeast Asia?

    The cheapest time of day to fly to Southeast Asia is generally in the evening, when round-trip flights cost $1,113 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,342.

Reviews of the top 5 airlines serving from Washington, D.C. to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1184 reviews
8.7Crew
8.2Entertainment
8.5Boarding
8.3Comfort
8.1Food
Airline reviews

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

10.0 ExcellentOmer, Nov 2025
MNL - ICN
Read more Korean Air reviews

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

All good. Over four hours flight if provided snacks like Qatar Airways would be better

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

Nothing to complain. The staff and flight was good especially the seats which was better compared than the cloth ones on Qatar airways

I was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

My flight was with American Airlines 120. The flight was delayed 3 hours and I missed my connection. When I arrived in Doha, the AA staff told me to call an 800 number to rebook a different flight, which was unacceptable. Eventually a Qatar Air staff member helped rebook me on a flight to Manila, that was 12 hours later. They offered me a hotel and meal voucher which I declined, because I didn’t want to leave the airport. Long story short, I spent 12 hours in the Doha airport waiting for my next flight.

Overall the experience was neat with crew being nice and caring especially to parent with kids. The free snacks option was okay. The kiosk at Philly airport didn’t work.

Reason for travelling Tampa to Orlando is to fly Qatar Airline. we end up with American Airline. This was the miserable experience I ever had in my entire travel history. Flight attendants were rude. They hit my knee with the food cart and I was holding ice pack for 2 hours. I still have the pain after a week. WE boarded the flight twice because of the temperature inside the plan.

First keep the airline as you promise. Reason for travelling from Orlando to Tampa is to go with Qatar Airline. We end up with American Airline. As expected the service was horrible.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Flight was good took off on time arrived early. Crew was awesome and did a great job. Very helpful and courteous. Bags arrived super fast with no hassles. Great flight!!!!!!

Many movies do not have captions, which would have been helpful when you have to live with the flight engine noise.

Excellent! All flight related was memorable ! My first experience with Mabuhay Lounge,,, not so good

Everything was fantastic!!!! I can’t wait to fly home 😃!!!!!

Great. Always great service and their pilots know how to land planes properly

Plane are getting old, almost an hour delay due to technical reson , after all passenger aboard. Took 4 flight on business class this trip and all the planes had an issues. PAL need to improve their planes.

Flight was really good, considering the semi bad weather in MNL. Food was great. Crew kept offering throughout the flight. Wifi signal was intermittent though.

Short flight with limited entertainment wasn't that bad. Staff was friendly and plane was clean. Meal was good.

You have to pay $25 to get access to smoking lounge. One coffee and small bottle of water coupon provided. Max time 2 hrs for two entries total.

I was glad that the plane was not totally full.

nice and clean plane but the seats and the comfort was not what i expected. i expected more based on all the ads and reviews that i've read. I guess you get what you pay for in economy.

Overall it was good. Food was bad. I ordered gluten free vegetarian meal. But I got gluten free chicken for my long flight from Seattle to Istanbul. I don’t eat any kind of meat. Second meal I got eggplant with meat which I couldn’t eat. I don’t understand why we can’t get gluten free vegetarian meal for a 12 hour flight. I eat the bread and that was it.

Worse worse worse, i would not recommend this airline to anyone. Istanbul airport maybe State of the Art facility but staff is rude, only works if they get tips, and they push you to give tips even though my family had spent $50 in tips. Airline staff doesn't speak english so you really can't understand them. It was a nightmare travelling with Turkish. Never again.

As a big guy the seats are way too small for me. Would prefer more comfortable seats on these long haul flights.

My flight was canceled 1 minute before boarding. The customer service was owful, no one could tell us what was going happened. I spent 30hrs instead of 15 from Washington DC to Brussels. No apologie or help

Boeing 777 is a bad choice for a such a long flight.

The staff at IST airport could have been more helpful. Too much wasted time and the plane from IST to KHI was just horrible. The plane was not clean and smelled bad!

This is my 2nd time with the Turkish airline. Would definitely recommend. In stability we connected to Indiago would not recommend, very cramped seating. No inflight entertainment..service was inferior.

I wouldn't know what the flight was like. AI canceled my flight reservation!! There's no way to speak to an actual human to fix the issue! NEVER AGAIN! ALWAYS BOOK YOUR FLIGHT DIRECTLY WITH THE AIRLINE NEVER GO THROUGH KAYAK OR JUSTFLY.COM!!

Paying extra for premium seats was wasted. Turkish Airlines takes 2 seats for bassinet. The lady next to me had a baby with bassinet Bassinet was in front of my seat

Everything you need to know for your flight to Southeast Asia

Cabin class types available on flights to Washington, D.C.

Cabin classes available on flights to Washington, D.C.. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.