Cheap Flights from Chiang Mai to Washington Dulles

Compare Chiang Mai to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

Book the best Washington Dulles fare with no extra fees

Flight deals from Chiang Mai to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Chiang Mai to Washington Dulles? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Chiang Mai to Washington Dulles

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

Chiang Mai to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundRs188,201
Cheapest month to flyJune

Finding cheap flights from Chiang Mai to Washington Dulles: Frequently asked questions

The best price we found for a return flight from Chiang Mai to Washington Dulles is Rs347,368. 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 Chiang Mai to Washington Dulles. But we found flights with one or more stops from Rs347,368.
As of February 2026, there are no flights flying from Chiang Mai to Washington Dulles.
The cheapest month to fly from Chiang Mai to Washington Dulles is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chiang Mai Airport to Washington Dulles Airport on Sunday, 5 April 2026.
No airlines currently offer direct flights between Chiang Mai Airport and Washington Dulles 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 Washington Dulles 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Spring Airlines offers the cheapest flight tickets to Washington Dulles.

Travelling from Chiang Mai International Airport (CNX) to Washington Dulles International Airport (IAD): what you need to know

  • Washington DC is 11 hours behind Chiang Mai and is in the UTC-4 timezone.

  • To ensure you catch your CNX to IAD flight, leave enough time to check in and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general travel rule.

  • Travelling during a peak month such as August? Major public holidays and other popular periods can result in longer queues and delays at security. Play things extra safe and get there up to four hours before international flights and two hours before a domestic departure.

  • Break up your flight or explore another city along the way with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Chiang Mai International Airport to Washington Dulles International Airport. Many passengers pass through Incheon International Airport on this route.

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

  • Rs188,201 is the lowest price for a one-way Chiang Mai International Airport to Washington Dulles International Airport flight. A return flight starts from Rs347,368. These fares may change depending on availability and demand.

  • To score cheap tickets from CNX to IAD, book as early as you can. Airlines typically offer lower prices when flights are first made available.

  • If you're willing to be flexible with your trip dates, try using the 'Whole month' search function. It'll find the cheapest price in each month when looking for your flight from Chiang Mai International Airport to Washington Dulles International Airport.

  • Picking up cheap flights from CNX to IAD is easy with Price Alerts. Simply create one of these automatic alerts and we'll notify you when a new discounted fare appears.

  • Tailor your trip with filters. Select your arrival and departure times, airlines and total journey duration. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from Chiang Mai International Airport to Washington Dulles International Airport.

Handy information about Chiang Mai International Airport (CNX)

  • Of the flights that depart from Chiang Mai International Airport, 76.37% land on schedule at their destination.

  • Chiang Mai International Airport is about 5 kilometres from central Chiang Mai. If you're driving, ride-sharing or catching a cab from the centre, it'll take 10 minutes or so to get there, depending on the traffic.

  • You can expect a journey time of around 25 minutes when using public transport.

  • Looking for a convenient hotel close to CNX? If you're catching an early flight from Chiang Mai International Airport to Washington Dulles International Airport, these accommodation options will have you sleeping moments from check-in:

Arriving at Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • IAD is located at 1 Saarinen Circle.

  • Washington Dulles International Airport to central Washington DC has a drive time of about 50 minutes. It's approximately 56 kilometres away.

  • Travelling on public transport will take you around 3 hours 25 minutes.

When to fly to Washington Dulles International Airport (IAD)

  • It's time to pick your trip dates for your flight from Chiang Mai International Airport to Washington Dulles International Airport. April is the most popular month to head to Washington DC. If you're after a more low-key vibe, go in January.

  • When reserving your flight from Chiang Mai International Airport to Washington Dulles International Airport, consider the type of weather you like. July is the warmest month in Washington DC, with temperatures ranging from 19ºC to 33ºC.

  • Look for cheap tickets from CNX to IAD in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between -6ºC and 10ºC on average.

Explore more of United States

  • Washington DC is easy to fall in love with, but there are so many other parts of United States you'll want to see. Around 322 kilometres north-east of Washington DC, a visit to New York will keep your itinerary busy. Don't miss top attractions like Statue of Liberty, Central Park and Empire State Building.

  • Philadelphia is another sought-after destination in United States and is around 193 kilometres north-east of Washington DC. No trip is complete without experiencing Liberty Bell, Independence Hall and Philadelphia Museum of Art.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.