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837 € 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

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Flight deals from Washington D.C. to Chiang Mai

Looking for a cheap last-minute deal or the best return flight from Washington D.C. to Chiang Mai Airport? If you want to travel next month, return fares start from 1.109 €. Find the lowest prices on one-way and return tickets right here.
Chiang Mai.837 € per passenger.Departing Sun, 8 Nov, returning Mon, 23 Nov.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Washington Ronald Reagan on Sun, 8 Nov, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Mon, 23 Nov, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 837 €, select.
Chiang Mai.875 € per passenger.Departing Thu, 19 Nov, returning Thu, 3 Dec.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Washington Ronald Reagan on Thu, 19 Nov, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Thu, 3 Dec, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 875 €, select.
Chiang Mai.1.014 € per passenger.Departing Thu, 11 Mar, returning Tue, 23 Mar.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Washington Ronald Reagan on Thu, 11 Mar, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Tue, 23 Mar, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 1.014 €, select.
Chiang Mai.1.015 € per passenger.Departing Mon, 1 Feb, returning Mon, 15 Feb.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Washington Ronald Reagan on Mon, 1 Feb, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Mon, 15 Feb, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 1.015 €, select.
Chiang Mai.1.021 € per passenger.Departing Wed, 23 Sep, returning Mon, 28 Sep.Return flight with Etihad Airways and Thai VietJet Air.Outbound indirect flight with Etihad Airways, departs from Washington Dulles on Wed, 23 Sep, arriving in Chiang Mai.Inbound indirect flight with Thai VietJet Air, departs from Chiang Mai on Mon, 28 Sep, arriving in Washington Dulles.Price includes taxes and charges.From 1.021 €, select.
Chiang Mai.1.046 € per passenger.Departing Tue, 4 May, returning Tue, 11 May.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Tue, 4 May, arriving in Chiang Mai.Inbound indirect flight with Qatar Airways, departs from Chiang Mai on Tue, 11 May, arriving in Washington Dulles.Price includes taxes and charges.From 1.046 €, select.
Chiang Mai.1.046 € per passenger.Departing Wed, 20 Jan, returning Wed, 27 Jan.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Washington Ronald Reagan on Wed, 20 Jan, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Wed, 27 Jan, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 1.046 €, select.
Chiang Mai.1.048 € per passenger.Departing Sun, 23 Aug, returning Mon, 7 Sep.Return flight with Air Premia and Thai AirAsia.Outbound indirect flight with Air Premia, departs from Washington Dulles on Sun, 23 Aug, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departs from Chiang Mai on Mon, 7 Sep, arriving in Washington Dulles.Price includes taxes and charges.From 1.048 €, select.
Chiang Mai.1.050 € per passenger.Departing Mon, 12 Apr, returning Thu, 13 May.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Mon, 12 Apr, arriving in Chiang Mai.Inbound indirect flight with Qatar Airways, departs from Chiang Mai on Thu, 13 May, arriving in Washington Dulles.Price includes taxes and charges.From 1.050 €, select.
Chiang Mai.1.053 € per passenger.Departing Tue, 6 Oct, returning Tue, 20 Oct.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Tue, 6 Oct, arriving in Chiang Mai.Inbound indirect flight with Qatar Airways, departs from Chiang Mai on Tue, 20 Oct, arriving in Washington Dulles.Price includes taxes and charges.From 1.053 €, select.
Chiang Mai.1.105 € per passenger.Departing Sat, 5 Dec, returning Fri, 18 Dec.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Washington Dulles on Sat, 5 Dec, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Fri, 18 Dec, arriving in Washington Dulles.Price includes taxes and charges.From 1.105 €, select.
Chiang Mai.1.109 € per passenger.Departing Tue, 4 Aug, returning Tue, 25 Aug.Return flight with Korean Air and Cathay Pacific.Outbound indirect flight with Korean Air, departs from Washington Dulles on Tue, 4 Aug, arriving in Chiang Mai.Inbound indirect flight with Cathay Pacific, departs from Chiang Mai on Tue, 25 Aug, arriving in Baltimore Washington International.Price includes taxes and charges.From 1.109 €, select.
Chiang Mai.1.148 € per passenger.Departing Wed, 2 Sep, returning Tue, 13 Oct.Return flight with Korean Air and Nok Air.Outbound indirect flight with Korean Air, departs from Washington Dulles on Wed, 2 Sep, arriving in Chiang Mai.Inbound indirect flight with Nok Air, departs from Chiang Mai on Tue, 13 Oct, arriving in Washington Dulles.Price includes taxes and charges.From 1.148 €, select.
Chiang Mai.1.170 € per passenger.Departing Sat, 3 Apr, returning Thu, 29 Apr.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Sat, 3 Apr, arriving in Chiang Mai.Inbound indirect flight with Qatar Airways, departs from Chiang Mai on Thu, 29 Apr, arriving in Washington Dulles.Price includes taxes and charges.From 1.170 €, select.
Chiang Mai.1.213 € per passenger.Departing Tue, 5 Jan, returning Wed, 17 Feb.Return flight with Korean Air and Bangkok Airways.Outbound indirect flight with Korean Air, departs from Washington Dulles on Tue, 5 Jan, arriving in Chiang Mai.Inbound indirect flight with Bangkok Airways, departs from Chiang Mai on Wed, 17 Feb, arriving in Washington Dulles.Price includes taxes and charges.From 1.213 €, select.
Chiang Mai.1.245 € per passenger.Departing Sat, 6 Mar, returning Tue, 6 Apr.Return flight with Emirates and Thai Airways.Outbound indirect flight with Emirates, departs from Washington Dulles on Sat, 6 Mar, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departs from Chiang Mai on Tue, 6 Apr, arriving in Washington Dulles.Price includes taxes and charges.From 1.245 €, 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 November.
Jul
from 1.377 €
Aug
from 1.109 €
Sep
from 1.021 €
Oct
from 1.053 €
Nov
from 837 €
Dec
from 1.105 €
Jan
from 1.046 €
Feb
from 1.015 €
Mar
from 1.014 €
Apr
from 1.170 €
May
from 1.046 €
Jun
Find prices

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 837 €
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Lampang

79km from central Chiang Mai
from 1.264 €
Search flights

Washington D.C. to Chiang Mai: Flight information

The things to know before you go.
Cheapest flight found837 €
Cheapest month to flyNovember

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

The best price we found for a return flight from Washington D.C. to Chiang Mai is 837 €. 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.
Currently, there are no airlines that fly direct from Washington D.C. to Chiang Mai. But we found flights with one stop from 837 €.
As of July 2026, there are no flights flying from Washington D.C. to Chiang Mai.
The cheapest month to fly from Washington D.C. to Chiang Mai is usually November.
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 Sunday, 8 November 2026.
No airlines currently offer direct flights between Washington D.C. and Chiang Mai Airport. Most routes have one or more stops.
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.

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.

The cheapest airline that flies to Chiang Mai is Korean Air .

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 travelling 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 holiday periods like Thanksgiving, Christmas and New Year.

Airports in Washington DC

Ronald Reagan Washington National Airport (DCA)

  • DCA is around 6 kilometres from central Washington DC. If you're ride-sharing, catching a taxi or driving from the centre, 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 kilometres from central Washington DC. It'll take 45 minutes or so to get to the airport if you're driving from the city centre. 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)

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 kilometres 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 hire, taxi or ride-share.

  • Travelling 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, 433 € 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 837 €. 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 holidays 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 kilometres 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 kilometres 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.

Plan the rest of your trip from Washington D.C. to Chiang Mai

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.