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Koh Samui

$1,045+ Cheap flights from Boston (BOS) to Koh Samui (USM)

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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — USM
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Boston to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,210
(Trip.com)
Provider with most accurate pricing for Boston Logan Intl-Ko Samui flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Ko Samui flights.
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From Boston Logan Intl to Ko Samui
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Find flight deals from Boston to Koh Samui

Cheapest flights from Boston to Koh Samui
Explore the most affordable flight options available from Boston to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Booking.com deal was found by Cheapflights users on 2/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:20 pmBOS - USM
2 stops32h 15mJapan Airlines
Wed 9/249:00 pmUSM - BOS
2 stops32h 05mJapan Airlines
Deal found 2/18$1,045
This FlightHub deal was found by Cheapflights users on 2/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/29:35 pmBOS - USM
2 stops23h 40mTurkish Airlines
Mon 9/229:30 pmUSM - BOS
2 stops33h 10mTurkish Airlines
Deal found 2/18$1,078
This SmartFares deal was found by Cheapflights users on 2/19. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/298:00 pmBOS - USM
2 stops23h 45mMultiple Airlines
Sun 12/712:30 pmUSM - BOS
2 stops41h 35mMultiple Airlines
Deal found 2/19$1,148
This Etihad Airways deal was found by Cheapflights users on 2/18. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/294:55 pmBOS - USM
2 stops30h 15mEtihad Airways
Tue 9/235:25 pmUSM - BOS
2 stops32h 50mEtihad Airways
Deal found 2/18$1,330
This FlightHub deal was found by Cheapflights users on 2/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/311:40 amBOS - USM
1 stop29h 55mCathay Pacific
Mon 9/2210:55 amUSM - BOS
1 stop23h 05mCathay Pacific
Deal found 2/18$1,523
This Justfly.com deal was found by Cheapflights users on 2/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/29:45 pmBOS - USM
2 stops25h 25mQatar Airways
Fri 6/138:45 amUSM - BOS
2 stops41h 20mQatar Airways
Deal found 2/19$1,671
This Gurufare deal was found by Cheapflights users on 2/18. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:35 pmBOS - USM
2 stops38h 35mSingapore Airlines
Tue 9/234:25 pmUSM - BOS
3 stops38h 55mSingapore Airlines
Deal found 2/18$1,877

Find flights from Boston to Koh Samui within your budget

Customize your flight search to find flights from Boston to Koh Samui 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 February 20, 2025.

Fly from

Boston

Fly to

Koh Samui

Route

Depart

Return

Price

BostonKoh Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 3/28

9:00 pm-11:05 am

2 stops27h 05m

Ko Samui

Mon 4/7

4:25 pm-7:40 pm

2 stops38h 15m

$1,210

BostonKoh Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 3/28

9:00 pm-8:15 am

2 stops24h 15m

Ko Samui

Mon 4/7

1:30 pm-7:40 pm

2 stops41h 10m

$1,232

BostonKoh Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 4/4

1:40 am-6:35 pm

1 stop29h 55m

Ko Samui

Sat 4/12

10:55 am-11:00 pm

1 stop23h 05m

$1,601

BostonKoh Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 6/2

9:45 pm-10:10 am

2 stops25h 25m

Ko Samui

Fri 6/13

8:45 am-3:05 pm

2 stops41h 20m

$1,671

BostonKoh Samui

BOS - USM

BOSUSM

Boston Logan Intl

Tue 3/4

10:40 am-6:15 pm

3 stops43h 35m

Ko Samui

Tue 3/11

1:25 pm-6:33 pm

3 stops40h 08m

$2,722

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Compare providers for flights from Boston to Koh Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Koh Samui in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Koh Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Koh Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Koh Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Koh Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Koh Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh Samui 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.

Travel insights for flights from Boston to Koh Samui

Get recent, data-driven insights about flights from Boston to Koh Samui including ideal travel times, pricing trends, and more.

What is the cheapest time of day to fly from BOS to USM?

Find hourly flight availability from Boston to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

A simple way to save on the total cost of your ticket is to fly from Boston to Koh Samui at noon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Boston to Koh Samui?

Use this chart to determine the cheapest time to fly round-trip from Boston to Koh Samui. Price data was last updated on February 16, 2025.

Travelers seeking maximum savings on their Boston to Koh Samui flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Koh Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Koh Samui when rainfall is around 2.3 in.

Temperature in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Koh Samui. Reviews last updated February 20, 2025.
To help decide which airline to fly from Boston to Koh Samui, see what other customers have to say about Singapore Airlines, Cathay Pacific and Qatar Airways. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,301 reviews

Food

7.7

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20

6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Singapore Airlines
8.1
Very good
1,301 reviews
Singapore Airlines
8.1
Very good
1,301 reviews

Food

7.7

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20

6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Cathay Pacific
7.5
Good
820 reviews
Singapore Airlines
8.1
Very good
1,301 reviews

Food

7.7

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20

6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Qatar Airways
7.4
Good
3,613 reviews
Singapore Airlines
8.1
Very good
1,301 reviews

Food

7.7

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20

6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Turkish Airlines
7.3
Good
3,832 reviews
Singapore Airlines
8.1
Very good
1,301 reviews

Food

7.7

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20

6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Related info for your journey

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

  • Can I find deals for flights from Boston to Koh Samui that include hotel bookings?

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

  • How can I find direct flights from Boston to Koh Samui?

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

  • Can I find deals for business class flights from Boston to Koh Samui?

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

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
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