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Cheap Flights from Washington D.C. to Chiang Mai

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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 Airport

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 $2,063. Find the lowest prices on one-way and return tickets right here.
Chiang Mai.$1,638 per passenger.Departing Sun, 8 Nov, returning Mon, 23 Nov.Return flight with Alaska Airlines and China Airlines.Outbound indirect flight with Alaska Airlines, departs from Baltimore Washington International on Sun, 8 Nov, arriving in Chiang Mai.Inbound indirect flight with China Airlines, departs from Chiang Mai on Mon, 23 Nov, arriving in Baltimore Washington International.Price includes taxes and charges.From $1,638, select.
Chiang Mai.$1,981 per passenger.Departing Tue, 10 Nov, returning Mon, 1 Feb.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Baltimore Washington International on Tue, 10 Nov, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Mon, 1 Feb, arriving in Washington Dulles.Price includes taxes and charges.From $1,981, select.
Chiang Mai.$2,063 per passenger.Departing Wed, 22 Apr, returning Wed, 29 Apr.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from Baltimore Washington International on Wed, 22 Apr, arriving in Chiang Mai.Inbound indirect flight with China Airlines, departs from Chiang Mai on Wed, 29 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $2,063, select.
Chiang Mai.$2,202 per passenger.Departing Fri, 20 Nov, returning Sun, 6 Dec.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from Washington Dulles on Fri, 20 Nov, arriving in Chiang Mai.Inbound indirect flight with Korean Air, departs from Chiang Mai on Sun, 6 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $2,202, select.
Chiang Mai.$2,236 per passenger.Departing Fri, 2 Oct, returning Fri, 23 Oct.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Fri, 2 Oct, arriving in Chiang Mai.Inbound indirect flight with Qatar Airways, departs from Chiang Mai on Fri, 23 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $2,236, select.
Chiang Mai.$2,236 per passenger.Departing Fri, 13 Mar, returning Fri, 20 Mar.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Fri, 13 Mar, arriving in Chiang Mai.Inbound indirect flight with Qatar Airways, departs from Chiang Mai on Fri, 20 Mar, arriving in Washington Dulles.Price includes taxes and charges.From $2,236, select.
Chiang Mai.$2,237 per passenger.Departing Tue, 1 Sep, returning Tue, 8 Sep.Return flight with Emirates and Thai Airways.Outbound indirect flight with Emirates, departs from Washington Dulles on Tue, 1 Sep, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departs from Chiang Mai on Tue, 8 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $2,237, select.
Chiang Mai.$2,573 per passenger.Departing Tue, 21 Jul, returning Tue, 4 Aug.Return flight with Emirates and Thai Airways.Outbound indirect flight with Emirates, departs from Washington Dulles on Tue, 21 Jul, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departs from Chiang Mai on Tue, 4 Aug, arriving in Washington Dulles.Price includes taxes and charges.From $2,573, select.
Chiang Mai.$2,742 per passenger.Departing Fri, 17 Jul, returning Thu, 30 Jul.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from Baltimore Washington International on Fri, 17 Jul, arriving in Chiang Mai.Inbound indirect flight with China Airlines, departs from Chiang Mai on Thu, 30 Jul, arriving in Baltimore Washington International.Price includes taxes and charges.From $2,742, select.
Chiang Mai.$3,088 per passenger.Departing Fri, 22 May, returning Sun, 31 May.Return flight with Emirates and Thai Airways.Outbound indirect flight with Emirates, departs from Washington Dulles on Fri, 22 May, arriving in Chiang Mai.Inbound indirect flight with Thai Airways, departs from Chiang Mai on Sun, 31 May, arriving in Washington Dulles.Price includes taxes and charges.From $3,088, select.
Chiang Mai.$3,113 per passenger.Departing Thu, 31 Dec, returning Sat, 9 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Thu, 31 Dec, arriving in Chiang Mai.Inbound indirect flight with Delta, departs from Chiang Mai on Sat, 9 Jan, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $3,113, select.
Chiang Mai.$3,521 per passenger.Departing Mon, 18 May, returning Mon, 1 Jun.Return flight with Alaska Airlines and China Airlines.Outbound indirect flight with Alaska Airlines, departs from Washington Ronald Reagan on Mon, 18 May, arriving in Chiang Mai.Inbound indirect flight with China Airlines, departs from Chiang Mai on Mon, 1 Jun, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $3,521, 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.
Mar
from $2,236
Apr
from $2,063
May
from $3,088
Jun
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Jul
from $2,742
Aug
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Sep
from $2,237
Oct
from $2,236
Nov
from $1,638
Dec
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Jan
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Feb
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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 $1,638
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Lampang

79km from central Chiang Mai
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Washington D.C. to Chiang Mai: Flight information

The things to know before you go.
Cheapest flight found$1,638
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 $1,638. 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 $1,638.
As of March 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 Alaska Airlines .

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

  • Planning your flight from Washington DC to Chiang Mai International Airport (CNX) begins with finding the right airport to begin your travels from. Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) and Baltimore/Wash International Thurgood Marshall Airport (BWI) are your main options in Washington DC.

  • Chiang Mai is 11 hours ahead of Washington DC. Chiang Mai International Airport is located in Chiang Mai, which follows the UTC+7 timezone.

  • Your flight from Washington DC to CNX won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • If you're jetting off during a bank holiday or other peak period, allow for even more time. Arrive two hours before domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • Located around 8 kilometres from the centre of Washington DC, DCA can be reached in about 15 minutes by car (depending on traffic). The journey by public transport takes roughly 45 minutes.

  • Want a leisurely start to your trip? Stay near Ronald Reagan National Airport. Whether you're catching an early flight from Washington DC to Chiang Mai International Airport or just don't want to be rushed, these hotels offer the perfect solution:

  • Of all flights departing from Ronald Reagan National Airport, 76.44% land on time at their destination.

  • The address for DCA is 1 Aviation Circle.

Washington Dulles International Airport (IAD)

  • Get the most out of your holiday with a stopover on your flight from Washington DC to Chiang Mai International Airport. Beijing Capital International Airport (PEK) is a great option between Washington Dulles International Airport and CNX.

  • You can arrive at IAD from central Washington DC in approximately 50 minutes by car, depending on traffic. The ride by public transport will take roughly 1 hour 10 minutes to cover the 56 kilometres or so.

  • Got an early start? 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 74.39%.

  • You'll find IAD at 1 Saarinen Circle.

Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • BWI is around 48 kilometres from central Washington DC. Driving from the city centre to the terminal takes about 50 minutes. If you're considering public transport, expect a journey of around 1 hour 30 minutes.

  • Set yourself up for a smooth departure — stay near Baltimore/Wash International Thurgood Marshall Airport and know you'll reach your gate with time to spare. Check in to one of these hotels the day before if you've booked an early Washington DC to Chiang Mai International Airport flight:

  • Airports have an on-time performance rating that monitors how often flights arrive without delays. At BWI, that rate is 77.13%.

About Chiang Mai International Airport (CNX)

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

  • Chiang Mai International Airport to central Chiang Mai is around 3 kilometres. If you're renting a car or getting a cab, plan ahead to make your trip as smooth as possible. Journey times vary depending on traffic conditions and the time of day.

  • Travelling by public transport will take you around 25 minutes.

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

  • The cheapest price we've found for a one-way ticket from Washington DC to Chiang Mai International Airport is $898. For a return flight on this route, the best price is $1,638. Depending on when you book and the availability, these fares may change.

  • To pick up cheap flights from Washington DC to CNX, book ahead. Airlines generally offer lower fares when tickets first go on sale.

  • If you can be flexible with your travel dates, use the 'Whole month' search tool. It'll give you the cheapest price in every month when searching for your Washington DC to Chiang Mai International Airport ticket.

  • Snapping up a cheap flight ticket from Washington DC to CNX is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when there's a price drop.

  • Find a cheap flight from Washington DC to Chiang Mai International Airport by using filters. Choose your preferred duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

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

  • August is the most popular month for flights from Washington DC to Chiang Mai International Airport (CNX). Visit Chiang Mai in February if you'd rather avoid peak season.

  • The warmest month in Chiang Mai is April, with temperatures ranging between 22ºC and 42ºC. Book your Washington DC to CNX flight ticket then if that's your definition of good weather.

  • Look for cheap tickets from Washington DC to Chiang Mai International Airport in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 12ºC and 31ºC.

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 after you've booked your flight from Washington DC to Chiang Mai International Airport:

  • Your Chiang Mai trip should come with a bit of sightseeing. Big-name attractions that belong on your itinerary include Songkran Festival Chiang Mai, Yi Peng and Loy Krathong (Lantern Festival) and Doi Suthep.

Explore more of Thailand

  • Phitsanulok is just one of the many cities in Thailand waiting to be discovered after you've seen Chiang Mai. Around 257 kilometres away to the south-east, popular attractions include Wat Phra Si Rattana Mahathat, Phra Si Ratana Temple (Wat Yai) and Wat Ratcha Burada Temple.

  • Around 153 kilometres north-east of Chiang Mai, Chiang Rai is another essential stop in Thailand. Get a taste of what this destination has to offer at Wat Rong Khun, Wat Phra Kaew and Wat Huai Pla Kung.

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 45 days.