BOS - CNX

$519 Find Cheap Flights from Boston to Chiang Mai - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Chiang Mai departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$961
Overall average: $1,261
Cathay Pacific
Sun 9/13Mon 9/21
BOS - CNX • 1 stop
Cheapest one-way
$519
Typical prices: $859-$935
Korean Air
Tue 10/27
BOS - CNX • 1 stop
Top airlines
Cheapest • from $961 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Chiang Mai. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $1,155 (round-trip)
Shortest trip • 21h 57m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 39% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Chiang Mai!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Chiang Mai (BOS-CNX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Chiang Mai that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Chiang Mai

Sun, Sep 13 - Mon, Sep 21
Cathay Pacific Logo
1:45 am - 6:40 pm
BOS
-
CNX
29h 55m
1 stop
Cathay Pacific Logo
7:25 pm - 11:05 pm
CNX
-
BOS
38h 40m
1 stop
$961Cathay Pacific
Wed, Jan 13 - Wed, Jan 27
Cathay Pacific Logo
12:30 am - 6:55 pm
BOS
-
CNX
30h 25m
1 stop
Cathay Pacific Logo
10:35 am - 10:00 pm
CNX
-
BOS
23h 25m
1 stop
$962Cathay Pacific
Thu, Jan 14 - Tue, Jan 26
Korean Air Logo
11:00 am - 10:55 pm
BOS
-
CNX
23h 55m
1 stop
Korean Air Logo
12:15 am - 3:22 pm
CNX
-
BOS
27h 07m
2 stops
$973Korean Air
Thu, Jan 14 - Tue, Jan 26
Korean Air Logo
6:00 am - 10:55 pm
BOS
-
CNX
28h 55m
2 stops
Korean Air Logo
12:15 am - 3:22 pm
CNX
-
BOS
27h 07m
2 stops
$978Korean Air
Sat, Nov 7 - Wed, Nov 11
Cathay Pacific Logo
12:30 am - 9:50 am
BOS
-
CNX
21h 20m
1 stop
Cathay Pacific Logo
10:35 am - 10:00 pm
CNX
-
BOS
23h 25m
1 stop
$992Cathay Pacific
Thu, Nov 12 - Fri, Feb 19
Korean Air Logo
11:00 am - 10:55 pm
BOS
-
CNX
23h 55m
1 stop
Korean Air Logo
12:15 am - 8:40 am
CNX
-
BOS
20h 25m
1 stop
$1,012Korean Air
Tue, Nov 24 - Mon, Mar 1
Delta Logo
5:15 pm - 10:55 pm
BOS
-
CNX
41h 40m
2 stops
Delta Logo
12:15 am - 8:40 am
CNX
-
BOS
20h 25m
1 stop
$1,013Delta
Thu, Nov 26 - Tue, Dec 29
Delta Logo
11:00 am - 10:55 pm
BOS
-
CNX
23h 55m
1 stop
Delta Logo
12:15 am - 10:41 pm
CNX
-
BOS
34h 26m
2 stops
$1,018Delta
Sun, Oct 4 - Mon, Oct 26
Multiple Airlines Logo
10:00 pm - 11:15 am
BOS
-
CNX
26h 15m
2 stops
Multiple Airlines Logo
9:10 am - 3:10 pm
CNX
-
BOS
41h 00m
1 stop
$1,022Multiple Airlines
Sun, Oct 4 - Mon, Oct 26
Multiple Airlines Logo
10:00 pm - 11:15 am
BOS
-
CNX
26h 15m
2 stops
Multiple Airlines Logo
9:10 am - 3:10 pm
CNX
-
BOS
41h 00m
1 stop
$1,059Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to Chiang Mai flights

Get data-powered insights and trends into flights from Boston to Chiang Mai to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boston to Chiang Mai?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Chiang Mai, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Chiang Mai is February, where tickets cost $858 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $2,281 and $1,805 respectively.

Good to know

Low season

March

Cheapest flight

$519
Best time to beat the crowds but there is an average 28% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Boston to Chiang Mai

When to book flights from Boston to Chiang Mai

Are your dates flexible? Find out the best times to travel from Boston to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Chiang Mai

  • What is the cheapest flight from Boston to Chiang Mai?

    In the last 5 days, the lowest price for a flight from Boston to Chiang Mai was $519 for a one-way ticket and $961 for a round-trip.

  • Do I need a passport to fly between Boston and Chiang Mai?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Boston and on arrival in Chiang Mai.

  • Which airports will I be using when flying from Boston to Chiang Mai?

    Boston airport is called Boston Logan Intl and the only airport in Chiang Mai is Chiang Mai.

  • Which aircraft models fly most regularly from Boston to Chiang Mai?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Chiang Mai?

    oneworld, and SkyTeam are the airline alliances operating flights between Boston and Chiang Mai, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Chiang Mai, Korean Air or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to Chiang Mai are Korean Air and Delta. With an average price for the route of $1,199 and an overall rating of 8.4, Korean Air is the most popular choice. Delta is also a great choice for the route, with an average price of $1,268 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Boston to Chiang Mai?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Chiang Mai.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Chiang Mai?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Mai from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Chiang Mai?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chiang Mai with an airline and back to Boston with another airline. Booking your flights between Boston and CNX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Chiang Mai?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chiang Mai from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Boston to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from Boston to Chiang Mai. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Chiang Mai? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1223 reviews
8.7Crew
8.3Comfort
8.2Entertainment
8.1Food
8.5Boarding
Airline reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

8.0 ExcellentCarlos J, Apr 2026
TPA - ATL
Read more Korean Air reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

It was a great experience in all aspects including passengers are respectful to each other. I will consider to fly with Korean Air again in the future.

Excellent service, love the extra amenities (water bottles, blankets, etc.).

They had the same movie choice as my previous flight, not much of a choice, movies were not up to date, music was uninteresting. Other than sitting on the ground for 40 minutes after boarding the plane, with pilot telling us that they couldn't load the plane because of rain, (bullshit) We finally got into Bangkok of course 40 minutes late.

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

Always fly with Korean Airlines. Best service great food. Nice and clean as always.

After the gauntlet of unnecessary security, and the two mile jog to make the flight, the flight was delayed 20 minutes on the ground for takeoff.. However, once in the air, the crew gave its usual excellent service.

Flight from Savannah arrived very late and we did not take off till 2 hours after scheduled departure!

Very good seat and service. No complaints about the food. Take off delayed due to airport traffic

It is usually very pleasant. Good service for the price, international flights are even better

Flight attendant was very poor in taking care or showing attention. I slept up front for a few and missed the snacks. She saw me many times, went by me many times and never once asked if I needed anything. The whole 2 hours flight. And this is to a Diamond member in first.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

The service was better on this flight from the long haul one, but still very poor from The Cathay Pacific of the past.

Seat was very old. Didn’t easily go up and down. Flight Attendent had issues moving the seat. Condition of the seat was ok. Parts were peeling off by the foot area. Food was ok. Ran out of the dish I wanted so got the beef. Beef filet was very tender but the sauce was a little strange. Disembarking was very easy.

Seats in the absolute back row of the plane even though we booked ages ago :( Crew was awesome though

My connecting flight was canceled or never existed. My stopover went from 1 hour and a half to 10 hours. It was a long day that I wasn't prepared for and it would have been nice to know that ahead of time. Cathay is great though. Great staff, entertainment and food.

Baggage delayed for 2 days and still chasing for reimbursement of basis items. Very horrible customer care service.

From BOS to HK, the crew had pushed me to choose the pasta for meal multiple times. It was a bad experience. Without this, everything was good.

The overall flight went well and the aircrew was pleasant.

Crew experience was more transnational, seats were so close together (LtoR and FtoB) that it was difficult to enjoy much of anything. When the person in front leaned back, there is no space for me. Sadly it was a flight to be endured not experienced.

One of the worst flight in business class by qatar airways and I’m no stranger with qatar airways businesses class, I travelled with the extensively in the past 12 years

Everything was good food could be better but ok for economy on my 2nd flight the head ph jack are bad you have to hold pushed in to hear anything but other then that very nice service

Everything you need to know for your flight from Boston to Chiang Mai

Information on your arrival and departure airports