BOS - CNX

$551 Find Cheap Flights from Boston to Chiang Mai

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 2/1. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Chiang Mai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Chiang Mai, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Chiang Mai, as well as popular online travel agencies
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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, Oct 19 - Fri, Oct 31
 Logo
10:00 pm - 11:15 amBOS-CNX
26h 15m2 stops
 Logo
12:10 pm - 2:55 pmCNX-BOS
37h 45m2 stops
Fri, Jan 9 - Fri, Jan 23
Cathay Pacific Logo
12:30 am - 6:50 pmBOS-CNX
30h 20m1 stop
Cathay Pacific Logo
10:35 am - 10:00 pmCNX-BOS
23h 25m1 stop
$990Cathay Pacific
Find Deal
Wed, Jan 21 - Mon, Feb 2
Delta Logo
11:00 am - 10:55 pmBOS-CNX
23h 55m1 stop
Delta Logo
12:15 am - 5:47 pmCNX-BOS
29h 32m2 stops
$993Delta
Find Deal
Wed, Jan 21 - Tue, Feb 3
 Logo
8:40 pm - 9:25 amBOS-CNX
24h 45m2 stops
 Logo
12:10 pm - 2:20 pmCNX-BOS
38h 10m2 stops
Wed, Jan 21 - Mon, Feb 2
Delta Logo
7:00 am - 10:55 pmBOS-CNX
27h 55m2 stops
Delta Logo
12:15 am - 6:56 pmCNX-BOS
30h 41m2 stops
$998Delta
Find Deal
Fri, Jan 9 - Fri, Jan 23
Cathay Pacific Logo
12:30 am - 6:50 pmBOS-CNX
30h 20m1 stop
Cathay Pacific Logo
10:35 am - 10:00 pmCNX-BOS
23h 25m1 stop
$1,004Cathay Pacific
Find Deal
Wed, Jan 21 - Mon, Feb 2
Korean Air Logo
11:00 am - 10:55 pmBOS-CNX
23h 55m1 stop
Korean Air Logo
12:15 am - 8:40 amCNX-BOS
20h 25m1 stop
$1,043Korean Air
Find Deal
Fri, Mar 6 - Thu, Mar 12
Korean Air Logo
6:00 am - 10:55 pmBOS-CNX
28h 55m2 stops
Korean Air Logo
12:15 am - 9:40 amCNX-BOS
20h 25m1 stop
$1,064Korean Air
Find Deal
Wed, Oct 29 - Wed, Nov 5
EVA Air Logo
6:59 pm - 10:35 amBOS-CNX
52h 36m2 stops
EVA Air Logo
11:50 am - 3:41 pmCNX-BOS
39h 51m2 stops
$1,145EVA Air
Find Deal
Sat, Nov 8 - Sun, Nov 16
China Airlines Logo
7:00 am - 4:35 pmBOS-CNX
45h 35m2 stops
China Airlines Logo
11:25 am - 7:29 amCNX-BOS
32h 04m2 stops
$1,150China Airlines
Find Deal

Everything you should know

Top airlines
Cathay Pacific
Cheapest • from $990 (round-trip)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 24% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$989
Typical prices: $1,047-1216
Multiple Airlines
Sun 10/19Fri 10/31
BOS - CNX • 2 stops
Cheapest one-way
$551
Typical prices: $612-768
Delta
Sun 2/1
BOS - CNX • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Mai!
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.

How much is a round-trip flight from Boston to Chiang Mai?

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 October, where tickets cost $1,080 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $2,098 and $1,702 respectively.

Good to know

Low seasonAugust
Cheapest flight$551
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 21% 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 3 days, the lowest price for a flight from Boston to Chiang Mai was $551 for a one-way ticket and $989 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?

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

  • What is the most popular layover when flying to Chiang Mai from Boston?

    Incheon is the most popular layover city among KAYAK users traveling from Boston to Chiang Mai.

  • 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 $1,213 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 $1,408 and an overall rating of 7.9.

  • 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 1139 reviews
8.2Entertainment
8.7Crew
8.1Food
8.5Boarding
8.3Comfort
Airline reviews

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

8.0 ExcellentMatt, Aug 2025ATL - EWR
Read more Korean Air reviews

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

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

Not many people, so you can lay down on two seats

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

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

I was only given 2 meals, and my screen showed that there were 3 meals. Second meal was 1-2 hours late according to the screen.

Just want to do a little more clean up so does not smell like urine.

I've stomach problems after 2 hours of flight, Iris, the flight purser not only did her best to make me feel comfortable, she went above and beyond providing pain relievers medicines and ointment. She look and found a doctor passenger on the flight to provide advise. She even report on ground staffs about my condition and provide wheelchair upon arrival. Kudos to her and Cathay Pacific!

So so, crew was overly professional and lacks human touch. Equipment is very old, especially the HKG-PVG CX366 flight. That plane along with its decor must have twenty years of history, or at least I had that impression.

I have a Peanut Allergy and the Steward staff were very accommodating in ensuring my safety as my allergy is life threatening. Very professional and so vested in their profession.

Everything was fine and I have no complaints or things to note.

Overall, it was ok. However, the food was very sub-par.

The economy seats are much indeed roomier. Meals needs improvement.

flight delayed 45 mins - missed connection - 1 hr layover became 8 hr layover waiting for next flight -

Fast boarding flight on time boarded plane back to front instead of stupid zone groups like US airlines do...

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

Information on your arrival and departure airports

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