Cheap Flights from Washington Dulles to Chiang Mai

Compare Washington Dulles 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 Dulles to Chiang Mai

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

Chiang Mai.$904 per passenger.Departing Tue, Sep 1, returning Mon, Sep 14.Round-trip flight with EVA Air.Outbound indirect flight with EVA Air, departing from Washington Dulles on Tue, Sep 1, arriving in Chiang Mai.Inbound indirect flight with EVA Air, departing from Chiang Mai on Mon, Sep 14, arriving in Washington Dulles.Price includes taxes and charges.From $904, select.

Chiang Mai.$996 per passenger.Departing Sun, Apr 5, returning Sun, Apr 12.Round-trip flight with Etihad Airways and Thai AirAsia.Outbound indirect flight with Etihad Airways, departing from Washington Dulles on Sun, Apr 5, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departing from Chiang Mai on Sun, Apr 12, arriving in Washington Dulles.Price includes taxes and charges.From $996, select.

Chiang Mai.$1,035 per passenger.Departing Sun, Feb 22, returning Tue, Mar 17.Round-trip flight with IndiGo and Thai AirAsia.Outbound indirect flight with IndiGo, departing from Washington Dulles on Sun, Feb 22, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departing from Chiang Mai on Tue, Mar 17, arriving in Washington Dulles.Price includes taxes and charges.From $1,035, select.

Chiang Mai.$1,045 per passenger.Departing Sat, Aug 29, returning Sun, Sep 6.Round-trip flight with EVA Air.Outbound indirect flight with EVA Air, departing from Washington Dulles on Sat, Aug 29, arriving in Chiang Mai.Inbound indirect flight with EVA Air, departing from Chiang Mai on Sun, Sep 6, arriving in Washington Dulles.Price includes taxes and charges.From $1,045, select.

Chiang Mai.$1,054 per passenger.Departing Fri, May 22, returning Sun, May 31.Round-trip flight with Air Premia and Thai AirAsia.Outbound indirect flight with Air Premia, departing from Washington Dulles on Fri, May 22, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departing from Chiang Mai on Sun, May 31, arriving in Washington Dulles.Price includes taxes and charges.From $1,054, select.

Chiang Mai.$1,057 per passenger.Departing Tue, Mar 10, returning Tue, Jun 16.Round-trip flight with Alaska Airlines and China Airlines.Outbound indirect flight with Alaska Airlines, departing from Washington Dulles on Tue, Mar 10, arriving in Chiang Mai.Inbound indirect flight with China Airlines, departing from Chiang Mai on Tue, Jun 16, arriving in Washington Dulles.Price includes taxes and charges.From $1,057, select.

Chiang Mai.$1,099 per passenger.Departing Fri, Apr 3, returning Tue, May 5.Round-trip flight with Etihad Airways and Thai LionAir.Outbound indirect flight with Etihad Airways, departing from Washington Dulles on Fri, Apr 3, arriving in Chiang Mai.Inbound indirect flight with Thai LionAir, departing from Chiang Mai on Tue, May 5, arriving in Washington Dulles.Price includes taxes and charges.From $1,099, select.

Chiang Mai.$1,107 per passenger.Departing Mon, Mar 2, returning Mon, Apr 6.Round-trip flight with Etihad Airways and Thai AirAsia.Outbound indirect flight with Etihad Airways, departing from Washington Dulles on Mon, Mar 2, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departing from Chiang Mai on Mon, Apr 6, arriving in Washington Dulles.Price includes taxes and charges.From $1,107, select.

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

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

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Washington Dulles to Chiang Mai: Alternative routes

Compare routes from Washington Dulles 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 $904

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	$904
Cheapest month to fly	September

Check out these Chiang Mai hotels

Ready to plan your stay? Other travelers rate these Chiang Mai hotels for cleanliness, service, and location.

Pleasant Chiangmai

1.40 km from Chiang Mai

$33

Per night

Urban House 195

1.02 km from Chiang Mai

$18

Per night

WE Terminal Hotel

1.59 km from Chiang Mai

$31

Per night

Pleasant Chiangmai

1.40 km from Chiang Mai

$33

Per night

Urban House 195

1.02 km from Chiang Mai

$18

Per night

WE Terminal Hotel

1.59 km from Chiang Mai

$31

Per night

Explore top-rated hotels

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

How much are round-trip flights from Washington Dulles to Chiang Mai?

The best price we found for a round-trip flight from Washington Dulles to Chiang Mai is $904. 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 Dulles to Chiang Mai?

Currently, there are no airlines that fly direct from Washington Dulles to Chiang Mai. But we found flights with one or more stops from $904.

How many flights are there a week from Washington Dulles to Chiang Mai?

There are no flights flying from Washington Dulles to Chiang Mai, as of February 2026.

When is the cheapest time to fly from Washington Dulles to Chiang Mai?

The cheapest month to fly from Washington Dulles to Chiang Mai is usually September.

Which upcoming date is cheapest to fly from Washington Dulles Airport to Chiang Mai Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Chiang Mai Airport on Tuesday, September 1, 2026.

Can I get a direct flight from Washington Dulles Airport to Chiang Mai Airport?

No airlines currently offer direct flights between Washington Dulles Airport 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 Dulles Airport to Chiang Mai?

Currently, EVA Air offers the cheapest flight tickets to Chiang Mai.

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

Chiang Mai is 11 hours ahead of Washington DC and observes the UTC+7 timezone.
Arrive at the airport on time so you don't miss your IAD to CNX flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid a last-minute sprint to the gate.
You'll likely experience longer queues in popular months such as April. Arriving up to four hours ahead of international flights and two hours for domestic departures is a smart move.
Enjoy a quick visit to another city or simply break up your journey with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Washington Dulles International Airport to Chiang Mai International Airport. Many passengers pass through Beijing Capital International Airport when flying between IAD and CNX.

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

The cheapest price we've found for a one-way Washington Dulles International Airport to Chiang Mai International Airport flight is $481. A return fare right now is $904. Depending on the availability when you book, these fares may change.
Don't leave things to the last minute. You're more likely to find cheap tickets from IAD to CNX if you book ahead. Airlines often have some terrific early bird rates.
The 'Whole month' search tool shows you the cheapest flights from Washington Dulles International Airport to Chiang Mai International Airport across the entire month. It's an easy way to find a bargain if your travel dates are flexible.
You won't have to check back in every day to see if fares have dropped when you set up a Price Alert. We'll notify you the moment there's a change in price on cheap flights from IAD to CNX.
Tailor your trip using filters. Select your departure and arrival times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Cheapest' or 'Best' flights from Washington Dulles International Airport to Chiang Mai International Airport.

Handy information about Washington Dulles International Airport (IAD)

You'll find IAD at 1 Saarinen Circle.
When it comes to the on-time performance of Washington Dulles International Airport, data shows 74.39% of flights arrive within the expected timeframe.
To get to Washington Dulles International Airport from central Washington DC, it'll take around 50 minutes if you're planning to drive. This depends on traffic though. It's approximately 56 kilometers from the airport to the city center.
You can expect a journey time of about 3 hours 25 minutes on public transport.
Booked an early flight from Washington Dulles International Airport to Chiang Mai International Airport? Avoid the last-minute rush to the terminal (and sneak in some extra precious sleep) by picking one of these stays near IAD:

Arriving at Chiang Mai International Airport (CNX)

The last thing you need is a long trip to your hotel if you're getting in late on a Washington Dulles International Airport to Chiang Mai International Airport flight. Reserve one of these accommodation options near CNX instead:
Get your adventure underway by picking up a Chiang Mai International Airport rental car. Grab a set of wheels from Chic Car Rent, asap car rental or Hertz to explore Chiang Mai and beyond.
Booking your vehicle from Chiang Mai International Airport about two weeks ahead can help you get the lowest rate.

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

Chiang Mai International Airport to central Chiang Mai has a drive time of about 10 minutes. It's approximately 5 kilometers away.
If you're using public transport, expect a journey of roughly 25 minutes.

When to fly to Chiang Mai International Airport (CNX)

It's time to plan your trip dates for your flight from Washington Dulles International Airport to Chiang Mai International Airport. August is the busiest month to visit Chiang Mai. If you'd like a quieter vibe, go in February.
The warmest month in Chiang Mai is April, with temperatures ranging between 22ºC (72ºF) and 42ºC (108ºF). Book your flights from Washington Dulles International Airport to Chiang Mai International Airport in this month if you enjoy this type of weather.
If you want cooler conditions, search for a cheap ticket from IAD to CNX in January. Average temperatures are between 12ºC (54ºF) and 31ºC (88ºF) then.

Explore more of Thailand

You've visited Chiang Mai, now it's time to discover other parts of Thailand. Travel about 434 kilometers east to Udon Thani to tick off its popular sights. From Nong Prajak Public Park to Krom Luang Prachaksinlapakhom Monument and Chinesisches Tor, you'll have a full itinerary ahead.
Around 80 kilometers south-east of Chiang Mai, Lampang is another essential stop in Thailand. Experience the best of this destination with a visit to Baan Sao Nak, Ratsadapisek Bridge and Horse-Drawn Carriage.