Cheap flights from Washington, D.C. to Chiang Mai

Compare Washington, D.C. to Chiang Mai flight deals

Find the cheapest month or even day of the year to fly to Chiang Mai

Book the best Chiang Mai fare with no extra fees

Flight deals from Washington, D.C. to Chiang Mai

Looking for a cheap last-minute deal or the best round-trip flight from Washington, D.C. to Chiang Mai Airport? If you want to travel next month, round-trip fares start from $1,144. Find the lowest prices on one-way and round-trip tickets right here.

Chiang Mai.$1,080 per passenger.Departing Mon, Oct 12, returning Fri, Oct 16.Round-trip flight with Turkish Airlines and Thai AirAsia.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Mon, Oct 12, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departing from Chiang Mai on Fri, Oct 16, arriving in Washington Dulles.Price includes taxes and charges.From $1,080, select.

Chiang Mai.$1,117 per passenger.Departing Tue, Sep 1, returning Tue, Sep 8.Round-trip flight with Etihad Airways and Thai VietJet Air.Outbound indirect flight with Etihad Airways, departing from Washington Dulles on Tue, Sep 1, arriving in Chiang Mai.Inbound indirect flight with Thai VietJet Air, departing from Chiang Mai on Tue, Sep 8, arriving in Washington Dulles.Price includes taxes and charges.From $1,117, select.

Chiang Mai.$1,128 per passenger.Departing Wed, May 5, returning Wed, May 12.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Wed, May 5, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Wed, May 12, arriving in Washington Dulles.Price includes taxes and charges.From $1,128, select.

Chiang Mai.$1,128 per passenger.Departing Wed, Sep 2, returning Tue, Oct 13.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Wed, Sep 2, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Tue, Oct 13, arriving in Washington Dulles.Price includes taxes and charges.From $1,128, select.

Chiang Mai.$1,128 per passenger.Departing Thu, Mar 11, returning Tue, Mar 23.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Thu, Mar 11, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Tue, Mar 23, arriving in Washington Dulles.Price includes taxes and charges.From $1,128, select.

Chiang Mai.$1,128 per passenger.Departing Mon, Feb 1, returning Mon, Feb 15.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Mon, Feb 1, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Mon, Feb 15, arriving in Washington Dulles.Price includes taxes and charges.From $1,128, select.

Chiang Mai.$1,128 per passenger.Departing Sun, Nov 8, returning Mon, Nov 23.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Sun, Nov 8, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Mon, Nov 23, arriving in Washington Dulles.Price includes taxes and charges.From $1,128, select.

Chiang Mai.$1,144 per passenger.Departing Wed, Aug 5, returning Wed, Aug 26.Round-trip flight with Air Premia and Thai VietJet Air.Outbound indirect flight with Air Premia, departing from Washington Dulles on Wed, Aug 5, arriving in Chiang Mai.Inbound indirect flight with Thai VietJet Air, departing from Chiang Mai on Wed, Aug 26, arriving in Washington Dulles.Price includes taxes and charges.From $1,144, select.

Chiang Mai.$1,157 per passenger.Departing Fri, Apr 2, returning Fri, Apr 30.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Fri, Apr 2, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Fri, Apr 30, arriving in Washington Dulles.Price includes taxes and charges.From $1,157, select.

Chiang Mai.$1,165 per passenger.Departing Mon, Jan 11, returning Tue, Jan 19.Round-trip flight with Turkish Airlines and Thai AirAsia.Outbound indirect flight with Turkish Airlines, departing from Washington Dulles on Mon, Jan 11, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departing from Chiang Mai on Tue, Jan 19, arriving in Washington Dulles.Price includes taxes and charges.From $1,165, select.

Chiang Mai.$1,208 per passenger.Departing Fri, Aug 28, returning Sun, Sep 27.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Fri, Aug 28, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Sun, Sep 27, arriving in Washington Dulles.Price includes taxes and charges.From $1,208, select.

Chiang Mai.$1,261 per passenger.Departing Sat, Nov 28, returning Sat, Dec 5.Round-trip flight with Korean Air.Outbound indirect flight with Korean Air, departing from Washington Dulles on Sat, Nov 28, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departing from Chiang Mai on Sat, Dec 5, arriving in Washington Dulles.Price includes taxes and charges.From $1,261, select.

Chiang Mai.$1,292 per passenger.Departing Wed, Dec 9, returning Wed, Dec 16.Round-trip flight with Korean Air.Outbound indirect flight with Korean Air, departing from Washington Dulles on Wed, Dec 9, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departing from Chiang Mai on Wed, Dec 16, arriving in Washington Dulles.Price includes taxes and charges.From $1,292, select.

Chiang Mai.$1,412 per passenger.Departing Wed, Jun 2, returning Sun, Jun 27.Round-trip flight with Qatar Airways and Thai Airways.Outbound indirect flight with Qatar Airways, departing from Washington Dulles on Wed, Jun 2, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Sun, Jun 27, arriving in Washington Dulles.Price includes taxes and charges.From $1,412, select.

Chiang Mai.$1,418 per passenger.Departing Sat, Mar 6, returning Fri, Apr 2.Round-trip flight with Emirates and Thai Airways.Outbound indirect flight with Emirates, departing from Washington Dulles on Sat, Mar 6, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Fri, Apr 2, arriving in Washington Dulles.Price includes taxes and charges.From $1,418, select.

Chiang Mai.$1,418 per passenger.Departing Fri, Oct 23, returning Mon, Nov 16.Round-trip flight with Emirates and Thai Airways.Outbound indirect flight with Emirates, departing from Washington Dulles on Fri, Oct 23, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departing from Chiang Mai on Mon, Nov 16, arriving in Washington Dulles.Price includes taxes and charges.From $1,418, select.

Find the cheapest month to fly from Washington, D.C. to Chiang Mai

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington, D.C. to Chiang Mai flights are currently cheapest in October.

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Jun

Washington, D.C. to Chiang Mai: Alternative routes

Compare routes from Washington, D.C. to Chiang Mai below. You may find an airport to fly into that's cheaper, faster, or easier than Chiang Mai.

Chiang Mai

4km from central Chiang Mai

ClosestCheapest

from $1,080

Search flights

Lampang

79km from central Chiang Mai

Search flights

Washington, D.C. to Chiang Mai: Flight information

The things to know before you go.

Cheapest flight found	$1,080
Cheapest month to fly	October

Finding cheap flights from Washington, D.C. to Chiang Mai: Frequently asked questions

How much are round-trip flights from Washington, D.C. to Chiang Mai?

The best price we found for a round-trip flight from Washington, D.C. to Chiang Mai is $1,080. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Washington, D.C. to Chiang Mai?

Currently, there are no airlines that fly direct from Washington, D.C. to Chiang Mai. But we found flights with one stop from $1,080.

How many flights are there a week from Washington, D.C. to Chiang Mai?

There are no flights flying from Washington, D.C. to Chiang Mai, as of July 2026.

When is the cheapest time to fly from Washington, D.C. to Chiang Mai?

The cheapest month to fly from Washington, D.C. to Chiang Mai is usually October.

Which upcoming date is cheapest to fly from Washington, D.C. to Chiang Mai Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington, D.C. to Chiang Mai Airport on Monday, October 12, 2026.

Can I get a direct flight from Washington, D.C. to Chiang Mai Airport?

No airlines currently offer direct flights between Washington, D.C. and Chiang Mai Airport. Most routes have one or more stops.

How can I find the best flight deal to Chiang Mai?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chiang Mai but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Chiang Mai?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Chiang Mai is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Washington, D.C. to Chiang Mai?

The cheapest airline that flies to Chiang Mai is Turkish Airlines.

Flying from Washington DC to Chiang Mai International Airport (CNX): What you need to know

The timezone in Chiang Mai is UTC+7, which is 12 hours ahead of Washington DC. Chiang Mai International Airport is located in Chiang Mai.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Be at the airport on time to board your flight from Washington DC to CNX.
If you're traveling during a peak month like July, make your way to the airport even earlier. It's smart to arrive up to four hours before international flights and two hours ahead of domestic departures. You can expect lines to be longer during vacation periods like Thanksgiving, Christmas and New Year.

Airports in Washington DC

Ronald Reagan Washington National Airport (DCA)

DCA is around 6 kilometers from central Washington DC. If you're ride-sharing, catching a cab or driving from the center, it'll take 10 minutes or so to get there, depending on traffic. If you're using public transport, expect the travel time to be around 25 minutes.
Want a stress-free start to your travels? Stay near Ronald Reagan Washington National Airport. Whether you have an early flight from Washington DC to Chiang Mai International Airport or prefer not to rush, these hotels offer the perfect solution:
71% of flights that depart Ronald Reagan Washington National Airport make it to their destination on time.
DCA's address is 1 Aviation Circle.

Washington Dulles International Airport (IAD)

Think about building a stopover into your journey at Beijing Capital International Airport (PEK). It's a key transfer point for flights from Washington DC to Chiang Mai International Airport (CNX) departing Washington Dulles International Airport.
IAD is about 40 kilometers from central Washington DC. It'll take 45 minutes or so to get to the airport if you're driving from the city center. Public transport takes approximately 1 hour 10 minutes.
Got a crack-of-dawn departure? You might like to check in to one of these hotels near Washington Dulles International Airport the day before your Washington DC to CNX flight:
Looking at how often flights stay on schedule, Washington Dulles International Airport has an on-time arrival performance of 77%.
IAD is located at 1 Saarinen Circle.

Baltimore Washington International Airport (BWI)

From central Washington DC, BWI is around 48 kilometers away. It takes roughly 40 minutes to arrive by car and 50 minutes or so on public transport.
Make catching an early Washington DC to Chiang Mai International Airport flight the easiest part of your journey. Book a room at one of these accommodation options close to Baltimore Washington International Airport and get to the check-in counter without rushing:
Airports have an on-time performance rating that measures how often flights arrive within the expected time frame. At BWI, that rate is 77%.

About Chiang Mai International Airport (CNX)

Have a late flight from Washington DC to Chiang Mai International Airport? Don't let it end in exhaustion. Check in to one of these hotels near CNX and give yourself a well-earned lights-out:
Booking your ride around two weeks in advance of your Washington DC to Chiang Mai International Airport flight can help you score a better rate.

Getting from Chiang Mai International Airport (CNX) to central Chiang Mai

Central Chiang Mai is around 3 kilometers from Chiang Mai International Airport and takes about 15 minutes to reach by car. Explore your options for getting into the city, whether that's with a car rental, cab or ride-share.
Traveling on public transport takes roughly 25 minutes.

How to find the cheapest flights from Washington DC to Chiang Mai International Airport (CNX)

At the moment, $498 is the lowest price we've found for a one-way ticket from Washington DC to Chiang Mai International Airport. The cheapest price for a return flight is $1,080. Remember fares can change due to availability at the time of booking.
Don't leave everything to the last moment. You're more likely to walk away with cheap flights from Washington DC to CNX if you book in advance. Airlines often offer some excellent early bird rates.
The 'Whole month' search tool shows you the cheapest Washington DC to Chiang Mai International Airport tickets across the month. It's an easy way to snap up a bargain if your trip dates are flexible.
Be the first to know about deals for plane tickets from Washington DC to CNX by setting up a Price Alert. We'll send you an email or push notification on the app when prices go down.
Filters make it easier to snap up a deal on your flight from Washington DC to Chiang Mai International Airport. Pick the departure times, carriers and stops that work for you. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from Washington DC to Chiang Mai International Airport (CNX)

Picture the kind of break you want when deciding when to fly. May is the quietest month to go to Chiang Mai. February is when most people book flights from Washington DC to Chiang Mai International Airport (CNX), which may be ideal if you're chasing more excitement.
Lock in a Washington DC to CNX plane ticket departing in April if you're eager to visit the city during its warmest month. Expect temperatures in Chiang Mai to range from 22ºC (72ºF) to 42ºC (108ºF).
If you'd rather travel in cooler conditions, look for a cheap ticket from Washington DC to Chiang Mai International Airport in January when temperatures are between 12ºC (54ºF) and 31ºC (88ºF).

More about Chiang Mai

When it comes to looking for somewhere to lay your head, you'll find the top stays in Chiang Mai right here. Check out these options as soon as you've booked your flight from Washington DC to Chiang Mai International Airport:
All great vacations should include a little sightseeing. Songkran Festival Chiang Mai, Doi Suthep and Elephant Conservation Park are attractions you won't want to skip in Chiang Mai.

Explore more of Thailand

Chiang Mai has its own special appeal, but there are so many other corners of Thailand waiting to be discovered. Around 257 kilometers southeast of Chiang Mai, a trip to Phitsanulok will fill your itinerary to the brim. Start with popular sights like Wat Phra Si Rattana Mahathat, Phra Si Ratana Temple (Wat Yai) and Wat Ratcha Burada Temple.
Chiang Rai is another standout destination in Thailand and is around 153 kilometers northeast of Chiang Mai. No trip is complete without visiting Wat Rong Khun, Wat Phra Kaew and Wat Huay Pla Kang: Goddess of Mercy Chiang Rai.