$420 Find Cheap Flights from Washington Dulles Airport 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 Dulles Intl to Southeast Asia departing on 9/2. 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

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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Flights Deals

Best Southeast Asia Flight Deals from Dulles Intl

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop$782
Manila
Manila1 stop$768
Singapore
Singapore1 stop$782
Denpasar
Denpasar1 stop$1,017
Hanoi
Hanoi1 stop$785
Phuket City
Phuket City1 stop$783
Cebu City
Cebu City2 stops$940
Da Nang
Da Nang2 stops$961
Phnom Penh
Phnom Penh1 stop$1,053
Chiang Mai
Chiang Mai2 stops$931
Angeles City
Angeles City2 stops$1,072
Vientiane
Vientiane2 stops$1,252
Ko Samui
Ko Samui2 stops$1,165
Boracay
Boracay2 stops$1,886
Davao City
Davao City2 stops$1,079
Krabi
Krabi2 stops$1,114
Bangkok
Bangkok1 stop$782
Manila
Manila1 stop$768
Singapore
Singapore1 stop$782
Denpasar
Denpasar1 stop$1,017
Hanoi
Hanoi1 stop$785
Phuket City
Phuket City1 stop$783
Cebu City
Cebu City2 stops$940
Da Nang
Da Nang2 stops$961
Phnom Penh
Phnom Penh1 stop$1,053
Chiang Mai
Chiang Mai2 stops$931
Angeles City
Angeles City2 stops$1,072
Vientiane
Vientiane2 stops$1,252
Ko Samui
Ko Samui2 stops$1,165
Boracay
Boracay2 stops$1,886
Davao City
Davao City2 stops$1,079
Krabi
Krabi2 stops$1,114

Cheap Flights from Dulles Intl to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl 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 Dulles Intl to Southeast Asia

Tue, Oct 14 - Tue, Nov 18
Air China Logo
11:00 pm - 12:20 amIAD-MNL
37h 20m1 stop
Air China Logo
6:20 am - 6:30 pmMNL-IAD
25h 10m1 stop
$768Air China
Find Deal
Tue, Sep 23 - Tue, Oct 14
Air China Logo
11:00 pm - 12:20 amIAD-MNL
37h 20m1 stop
Air China Logo
6:25 am - 7:30 pmMNL-IAD
25h 05m1 stop
$770Air China
Find Deal
Tue, Nov 25 - Fri, Mar 6
Turkish Airlines Logo
9:10 pm - 4:30 pmIAD-SGN
31h 20m1 stop
Turkish Airlines Logo
8:45 am - 7:15 pmSGN-IAD
46h 30m1 stop
$775Turkish Airlines
Find Deal
Tue, Sep 2 - Wed, Oct 29
Turkish Airlines Logo
1:30 pm - 4:10 pmIAD-SGN
39h 40m1 stop
Turkish Airlines Logo
8:45 am - 8:15 pmSGN-IAD
46h 30m1 stop
$783Turkish Airlines
Find Deal
Mon, Sep 22 - Sun, Oct 26
Korean Air Logo
1:15 pm - 11:25 pmIAD-BKK
23h 10m1 stop
Korean Air Logo
1:00 am - 10:50 amBKK-IAD
20h 50m1 stop
$883Korean Air
Find Deal
Tue, Aug 19 - Tue, Sep 16
Korean Air Logo
1:30 pm - 11:25 pmIAD-BKK
22h 55m1 stop
Korean Air Logo
11:30 pm - 10:55 amBKK-IAD
22h 25m1 stop
$885Korean Air
Find Deal
Thu, Sep 11 - Mon, Sep 22
Qatar Airways Logo
9:00 pm - 6:15 amIAD-BKK
22h 15m1 stop
Qatar Airways Logo
2:30 am - 3:40 pmBKK-IAD
24h 10m1 stop
$986Qatar Airways
Find Deal
Wed, Oct 29 - Tue, Nov 11
Qatar Airways Logo
11:40 am - 5:55 amIAD-BKK
31h 15m1 stop
Qatar Airways Logo
2:00 am - 3:55 pmBKK-IAD
25h 55m1 stop
$990Qatar Airways
Find Deal
Wed, Jul 16 - Wed, Jul 23
Emirates Logo
10:55 am - 8:00 pmIAD-HKT
22h 05m1 stop
Emirates Logo
7:55 pm - 8:40 amHKT-IAD
23h 45m1 stop
$1,238Emirates
Find Deal
Fri, Oct 31 - Fri, Nov 7
Emirates Logo
11:15 am - 7:40 pmIAD-HKT
21h 25m1 stop
Emirates Logo
9:50 pm - 8:10 amHKT-IAD
46h 20m2 stops
$1,254Emirates
Find Deal
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KAYAK's insights & trends for Dulles Intl to Southeast Asia flights

Get data-powered insights and trends into flights from Dulles Intl 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. Dulles Intl Airport 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 $1,283, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Southeast Asia is September, when tickets cost $1,046 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $1,653 and $1,516 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Southeast Asia?

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

Your flight ticket price will generally be cheaper if you fly to Southeast Asia on a Saturday and more expensive on a Friday. On your return trip to Washington Dulles Airport, you should consider flying back on a Sunday, and avoid Saturdays for better deals.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Southeast Asia, you should book around 8 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.


Good to know

Low seasonMay
High seasonJanuary
Cheapest flight$420
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Washington Dulles Airport to Singapore

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Dulles Airport to Southeast Asia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport 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 Dulles Airport 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 Dulles Airport 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 Dulles Airport 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 Dulles Airport 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.

Top 5 airlines serving from Dulles Intl 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 Dulles Intl 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 1088 reviews
8.2Entertainment
8.5Boarding
8.3Comfort
8.1Food
8.7Crew
Airline reviews

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!

10.0 ExcellentAnonymous, May 2025LAS - ICN
Read more Korean Air reviews

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

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

The crew was amazing, really friendly and efficient. One of the best flights I have ever been on. They made the long flight comfortable and I noticed there were two birthdays on the flight. They gave to customers birthday cards and wished them a happy birthday. That was very nice to see.

Everything was great. Wifi was down,but that didn't matter to me.

The best best best flight experience I have ever had. And I fly A LOT. THANK YOU, ANA!!!

When booking the flight i picked it because it said flying with ana even on our e-ticket as well but I showed up to the airport and I flew with united. I have flew with both airlines before and I prefer ana for the food quality and comfortable. So I was disappointed in that outcome and felt the food gave me minor ibs. The whole thing was missing leading with not getting what I thought I was paying for. Felt a bait and switched. Do not have confidence in using this app in the future trips

This was a large plane with an upper deck. It seems like business was upstairs. If it was a US airline then I would say I sat in economy plus, but I think it was just economy. Though since ANA would not allow me to choose seats for the price it may have been plus. Lots of movies to choose from, and good service.

Thankful for the staff who provided blankets cause the plane was quite cold and no way to adjust the airflow in the seats next to the bathroom.

This was the best airline I’ve ever taken. The staff are amazing. The food was great. The pilot was phenomenal. I would highly recommend this airline.

Uh there was a delay, because of the weather. And what took usually an hour flight to Louisville took about 6+ hours. Flight got canceled

I had to get rerouted because the weather delayed my flight enough to miss both of my connecting flights. I select nearly 2 hours on customer service trying to get rerouted and had to miss my first plane which took my luggage to San Francisco. Luckily, customer service sent me to the same airport but I had to ride 12 hours in economy after I paid extra for premium economy. Totally sucks that I overpaid. Customer service and airplane crew were great and really helpful though. Although I still hate how small the seat was, especially since I'm smaller than average, I can't imagine how much it would suck for an average sized person.

I stopped flying with United back in the nineties. Today's experience reminded me of why.

Except for the uncleaned tray, and the delay in serving food for our section (which may have been due to the location of our row) everything else was good. The crew were very professional and responded to our requests promptly throughout the flight. We as a family were not disappointed by Emirates.

It was great, a little more leg room would have been better particularly since we were in premium economy

The boarding process was smooth and the stewardesses were nice. Some delays with drinks at the end of the flight, but no issues.

Thay crew was so nice.Air hostess il ham was so nice.my mom was little scray with airplan turbulence she help us alot.

Seat 💺 was all the way on last row. Food was okay .

Charged for internet that never really worked. The food selection was just ok.

Boarding, seats, entertainment and service were all great. Food was great except for the fact that there were too many sweet items.

The ground staff on Islamabad is horrible. The on board services are excellent.

The entire crew went above and beyond. This was our first flight with our 3 month old, and they were accommodating and friendly. The crew is attentive and marks a HIGE difference to the regular runs with Avianca and LATAM.

Business class on this plane was adequate, service, amenities, swag, and crew was amazing!

This trip was the most comfortable one I have ever experienced, the team was excellent and very helpful. I am so glad I picked Qatar Airways.

All the crew members were too slow and rude. Most of the times the registers were empty, while hundreds of customers were waiting in line, and it was impossible to get a supervisor. Despite being in line on time, I missed my freight, plus a some customers who were ahead and behind me.

Well organized boarding, efficient and on time. Nice crew on the plane. Thank you!

The Qatar Airways staff pre-boarding and also on the flight from Dallas to Doha were incredibly mediocre and arrogant. Consider retraining these individuals Other flights were ok.

My experience with Qatar airway was very unsatisfactory. They lost my child’s stroller and I was told they found it and will send it to the hotel which was a lie. I had to go back to the airport baggage claim and pick up myself after trying to contact them many times!. There was a lack professional and communication. I am very disappointed in Qatar airway and will not be recommending them to friends and family nor will I be flying with them in the future.

Worst air experience in whole life . Boarding and checking was hassle as they did 3 times. Crew team was clueless about passengers need. Despite of passengers raising hand , they were resetting the program

The food is not good and also if you ask crew to bring something they say ok I will bring but you will never get it. Please they should listen good to passengers

No difference between US airline and Qatar. Both cramp as many people. The airline seems to change planes without notice choice is seating when making reservations online doesn’t match the plane a passenger is on. Especially paying extra. Nothing special No different than US carriers.

Did not like anything. Seats were crammed, leg space was minimal and food was terrible. This was the first time traveling overseas in American Airlines and was the worst experience ever. Have learned a lesson to never travel in American Airlines.

Delayed my flights and no communication. We end up spending 6 hrs in Doha. No food or any concern from the airline. Terrible

I’ve been traveling for 20 years. I tried Turkish airline for the first time horrible horrible service and it would be my last time even if I get offer for a free ticket, I will not accept it. They have races and the worst Flight attendant

It wasn't good. I didn’t understand. They changed 320 dollars for 2 luggage. My ticket was regular and I paid almost 1200.00 dollars. Why they did charge? I want my money back.. thanks Yılmaz polat

Very punctual, the onboard staff was friendly and correct, the flight was fortunately very calm, the toilets were clean, in short, an excellent experience Thanks

Ordered Vegan meal - it was ok, but not exceptional. Seat ok row 39 middle section aisle. Nearly full flight - crew was busy but they did the best they could. There was a USB A port at the seat. I listened to my own music and only looked at flight information. One nice thing was the connection information was made available in the screen.

Very nice and friendly crew. Boarding system can be improved.

The Etickets had been changed (Why?) without notice ; Hence, that caused troubles when checking in. Not until I contacted my ticket agent and was given correct Etickets could I then check in.

Cleanliness of seats, trays, storage pockets need more attention, but everything else was good.

A great airline, no complaints at all. My experience with Cheap Tickets was very disappointing however. Two hours after purchasing the flight they called to tell me that the ticket price had gone up. I’ve never heard of such a thing. That is called false advertising; I will never use this ticketing service again and will warn all friends to never use it.

One of the worst check in process at the DIA as well as the boarding counter Changed seat at the last minute and assigned middle seat while I paid for window seat. Requested many times but to no avail . horrible customer service and very poor process Requesting refund for seat that was changed last minute

Good overall flight. Excellent crew. Food options could be improved.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

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