HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chiang Rai

$8,994+ Cheap flights from Boston (BOS) to Chiang Rai (CEI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CEI
Dec 21 — Dec 281
Sun 12/21
Sun 12/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Chiang Rai with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Boston to Chiang Rai

Best flights from Boston to Chiang Rai
Discover carefully curated flight deals from Boston to Chiang Rai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 21, 2025.

This Lufthansa deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/308:40 pmBOS - CEI
2 stops33h 40mLufthansa
Thu 12/46:55 pmCEI - BOS
2 stops35h 40mLufthansa
Deal found 11/17$8,994

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Chiang Rai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 21, 2025.
Use the filters below to find and compare flights from Boston to Chiang Rai that are best for you.

Fly from

Boston

Fly to

Chiang Rai

Route

Depart

Return

Price

BostonChiang Rai

BOS - CEI

BOSCEI

Boston Logan Intl

Sun 11/30

8:40 pm-6:20 pm

2 stops33h 40m

Chiang Rai

Thu 12/4

6:55 pm-6:35 pm

2 stops35h 40m

$8,994

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Best time to book a flight from Boston to Chiang Rai

Have a flexible travel schedule? Discover the best time to fly to Chiang Rai from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Chiang Rai

What is the cheapest month to book a flight from Boston to Chiang Rai?

Currently, November is the cheapest month in which you can book a flight from Boston to Chiang Rai (average of $910). Flying from Boston to Chiang Rai in June is currently the most expensive (average of $1,668). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Boston to Chiang Rai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Chiang Rai?

    For as low as $8,994, Lufthansa can have you in Chiang Rai from Boston in 33h 40m. There are 8086 mi between Boston and Chiang Rai.

  • Can I find deals for flights from Boston to Chiang Rai that include hotel bookings?

    Yes. In addition to deals on Boston to Chiang Rai flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Chiang Rai?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Chiang Rai.

  • Can I find deals for business class flights from Boston to Chiang Rai?

    Yes. Cheapflights offers flight deals from Boston to Chiang Rai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Chiang Rai?

    Currently, November is the cheapest month in which you can book a flight from Boston to Chiang Rai (average of $910). Flying from Boston to Chiang Rai in June is currently the most expensive (average of $1,668). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.