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WAS - CNX

Find cheap flights from Washington, D.C. to Chiang Mai from $613

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 Chiang Mai departing on 8/12. 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
0 bags
Fri 6/7
Fri 6/14

Search hundreds of travel sites at once for deals on flights to Chiang Mai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Chiang Mai, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Chiang Mai, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Washington, D.C. to Chiang Mai (WAS-CNX)

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 Chiang Mai 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 and deals for you by selecting your travel dates.
Choose your dates
4:36 pm - 8:40 pmBWI-CNX
41h 04m2 stops
11:15 pm - 9:09 amCNX-BWI
44h 54m2 stops
$1,259Delta
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Thu, Sep 5 - Mon, Sep 9
10:55 am - 7:10 pmIAD-CNX
45h 15m2 stops
10:10 am - 8:45 amCNX-IAD
33h 35m2 stops
$1,486Qatar Airways
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Sun, Jun 2 - Tue, Jul 2
8:30 pm - 9:55 pmDCA-CNX
38h 25m2 stops
11:15 pm - 1:15 pmCNX-DCA
26h 00m2 stops
$1,590Korean Air
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Fri, Oct 11 - Mon, Nov 11
10:55 am - 1:45 pmIAD-CNX
39h 50m2 stops
2:35 pm - 8:45 amCNX-IAD
29h 10m2 stops
$1,595
Find Deal
Wed, May 29 - Wed, Jun 5
10:55 am - 1:45 pmIAD-CNX
39h 50m2 stops
11:55 am - 8:45 amCNX-IAD
31h 50m2 stops
$1,618Qatar Airways
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Sun, Jun 2 - Mon, Jul 1
5:11 pm - 4:15 pmDCA-CNX
36h 04m2 stops
5:15 pm - 4:11 pmCNX-DCA
33h 56m2 stops
$1,664
Find Deal
Tue, Jul 2 - Fri, Jul 12
5:30 pm - 11:45 pmIAD-CNX
43h 15m2 stops
12:45 am - 5:23 amCNX-IAD
39h 38m2 stops
$1,696Asiana Airlines
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Tue, Jul 2 - Thu, Jul 11
6:30 am - 11:45 pmIAD-CNX
30h 15m2 stops
12:45 am - 5:23 amCNX-IAD
39h 38m2 stops
$1,791Asiana Airlines
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Sat, Jul 6 - Sat, Jul 13
6:37 pm - 9:55 pmBWI-CNX
40h 18m2 stops
11:15 pm - 11:47 pmCNX-BWI
35h 32m2 stops
$2,060Delta
Find Deal
Sat, Jul 6 - Sun, Jul 14
7:20 pm - 9:55 pmIAD-CNX
39h 35m2 stops
11:15 pm - 11:15 amCNX-IAD
23h 00m1 stop
$2,202Korean Air
Find Deal
Sat, Jul 6 - Sun, Jul 14

Flights from Washington, D.C. to Chiang Mai - Travel Insights & Trends

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

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

The average price of all flights from Washington, D.C. to Chiang Mai clicked on KAYAK for each day over the last 12 months.
For Washington, D.C. to Chiang Mai, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Chiang Mai back to Washington, D.C., the best deals are generally found on Monday, with Saturday being the most expensive.

What is the cheapest month to fly from Washington, D.C. to Chiang Mai?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. to Chiang Mai, 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 Chiang Mai is September, where tickets cost $1,280 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,968 and $1,909 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. to Chiang Mai, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. to Chiang Mai, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 74 days before departure.

Which airlines provide the cheapest flights from Washington, D.C. to Chiang Mai?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Washington, D.C. to Chiang Mai found on KAYAK was with Korean Air for $804. Delta proposed a round-trip connection from $1,259 and Qatar Airways from $1,486.

Good to know

Low season

April

High season

January

Cheapest flight

$613
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Washington Dulles Airport to Chiang Mai

When to book flights from Washington, D.C. to Chiang Mai

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Chiang Mai

  • What is the cheapest flight from Washington, D.C. to Chiang Mai?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Chiang Mai was $613 for a one-way ticket and $1,259 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Chiang Mai?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in Chiang Mai.

  • Which airports will I be using when flying from Washington, D.C. to Chiang Mai?

    There are 2 airports in Washington, D.C. (Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl.) and only 1 airport in Chiang Mai (Chiang Mai). The cheapest flights are generally found on the Baltimore/Washington Airport to Chiang Mai flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Chiang Mai?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Chiang Mai?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Washington, D.C. and Chiang Mai, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Chiang Mai from Washington, D.C.?

    Incheon is the most popular layover city among KAYAK users traveling from Washington, D.C. to Chiang Mai.

  • Which is the best airline for flights from Washington, D.C. to Chiang Mai, Korean Air or Delta?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Chiang Mai are Korean Air and Delta. With an average price for the route of $1,438 and an overall rating of 8.5, Korean Air is the most popular choice. Delta is also a great choice for the route, with an average price of $1,480 and an overall rating of 8.0.

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

    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 Chiang Mai.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Mai from Washington, D.C. 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 Chiang Mai?

    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 to Chiang Mai with an airline and back to Washington, D.C. 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 Chiang Mai?

    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 to Chiang Mai from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Washington, D.C. to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Chiang Mai. 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 Chiang Mai? 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.
8.5
Korean AirOverall score based on 1181 reviews
8.8Crew
8.2Entertainment
8.2Food
8.6Boarding
8.3Comfort
Airline reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

10.0 ExcellentAnonymous, Apr 2024IAD - ICN
Read more about Korean Air reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

You did not put me on a Korean Air flight! so I do not have nothing to say

My flight was diverted to Atlanta and I was not given enough time. I paid my travel on April 23, 2023. It was originally Delta from Norfolk to NY, then Korean Air from NY all the way Philippines which is my final stop. Instead from Atlanta to Korea I flew Delta which is okay. Then Korea to Philippines, I flew Asiana Airlines. What I did not like, Ieagle did not sent me an email that my flight was change and so when I went to check in Wednesday the 10th, at 4:30 a.m they told me my flight was delayed at 6;00 p.m and diverted in Atlanta and I am flying Asiana from Korea to Philippines. I do not appreciate that Kayak or Ieagle chenge our flights 5 times and then last minute change again during my day of flight. I hope that you will not make any changes of my flight o Feb 15th because it has to be the same flight with my husband. That is the reason why we made the arrangements early on.

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

Flight arrived early, fantastic, since it is short flight, no food being served

Always fly with Korean Airlines. Best service great food. Nice and clean as always.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

Operated by American Airlines. Very chaotic and the crew was bit rough responding any enquiries. Restricted leg space.. Qatar would have been better

Qatar airways from Doha to guangzhau was excellent big bird Boeing 777 more room and smoothly flight, I Love it

It was good no problems made it on time for the next flight overseas!

The made us waiting and held our passports and boarding pass making us miss our flights

Not impressed. Only allowed one carry on on such a long flight.

The flight was good but my neighbor had the vent open full power for the whole flight and because the air was blowing from the side instead of from the top and I got very cold and ended up with a sore throat.

Bad experience with the delay n long wait time for connecting flight after missing the connection flight from Doha.

Wore experience due to delay and took me 3 days to reach my destination.

All over with Qatar airlines my experience was really bad due to delays and then putting me on different airlines and after 8 hours of wait I had to listen to their is no plane to fly for another 24 hours. Wore experience ever.

Excellent will be flying again in May with Qatar. to Botswana.

Book cheap flights from Washington, D.C. to Chiang Mai

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Chiang Mai found on KAYAK in the last 72 hours.
8/12Mon
3 stops
49h 30mIAD-CNX
$613
8/12Mon
2 stops
36h 04mDCA-CNX
$649
8/12Mon
2 stops
33h 34mIAD-CNX
$666
8/12Mon
2 stopsKorean Air
51h 40mBWI-CNX
$804
10/15Tue
1 stopKorean Air
44h 20mIAD-CNX
$884
7/11Thu
2 stopsAsiana Airlines
30h 15mIAD-CNX
$957
5/29Wed
2 stopsQatar Airways
45h 15mIAD-CNX
$990
5/31Fri
2 stopsQatar Airways
45h 15mIAD-CNX
$1,029
7/11Thu
2 stopsDelta
37h 47mBWI-CNX
$1,042
5/31Fri
2 stopsDelta
40h 39mBWI-CNX
$1,691

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Flights to Chiang Mai

Destination:

Chiang Mai (CNX)Thailand

Return flight deals:

Chiang Mai - Washington, D.C.

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