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Ko Samui

$1,086+ Cheap flights from Boston (BOS) to Ko 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — USM
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheap flight deals from Boston to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Ko 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,086
(Justfly.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 Ko Samui

Cheapest flights from Boston to Ko Samui
Explore the most affordable flight options available from Boston to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This FlightHub deal was found by Cheapflights users on 3/24. 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 10/59:35 pmBOS - USM
2 stops23h 40mTurkish Airlines
Mon 10/137:00 amUSM - BOS
2 stops47h 40mTurkish Airlines
Deal found 3/24$1,148
This FlightHub deal was found by Cheapflights users on 3/24. 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.
Thu 4/310:00 pmBOS - USM
2 stops29h 40mQatar Airways
Sat 4/128:20 amUSM - BOS
2 stops65h 45mQatar Airways
Deal found 3/24$1,340
This Trip.com deal was found by Cheapflights users on 3/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/271:30 amBOS - USM
2 stops32h 20mMultiple Airlines
Mon 4/77:00 pmUSM - BOS
2 stops39h 00mMultiple Airlines
Deal found 3/23$1,407
This Gotogate deal was found by Cheapflights users on 3/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/41:40 amBOS - USM
2 stops31h 50mCathay Pacific
Mon 10/1310:55 amUSM - BOS
1 stop23h 05mCathay Pacific
Deal found 3/24$1,676
This Ovago deal was found by Cheapflights users on 3/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2810:54 amBOS - USM
3 stops34h 21mEtihad Airways
Mon 4/77:00 pmUSM - BOS
2 stops30h 55mEtihad Airways
Deal found 3/23$2,659
This Gurufare deal was found by Cheapflights users on 3/24. 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.
Wed 8/611:30 amBOS - USM
3 stops43h 45mSingapore Airlines
Fri 8/151:30 pmUSM - BOS
2 stops36h 10mSingapore Airlines
Deal found 3/24$2,766
This AranGrant deal was found by Cheapflights users on 3/24. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/78:00 pmBOS - USM
2 stops35h 15mBritish Airways
Mon 4/141:30 pmUSM - BOS
2 stops38h 40mBritish Airways
Deal found 3/24$3,118

Cheapflights Fare Finder

Customize your flight search to find flights from Boston to Ko 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 March 25, 2025.
Use the filters below to find and compare flights from Boston to Ko Samui that are best for you.

Fly from

Boston

Fly to

Ko Samui

Route

Depart

Return

Price

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 4/3

10:00 pm-2:40 pm

2 stops29h 40m

Ko Samui

Sat 4/12

8:20 am-3:05 pm

2 stops65h 45m

$1,340

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/23

9:35 pm-6:15 pm

2 stops33h 40m

Ko Samui

Sat 6/14

8:50 pm-7:40 pm

2 stops33h 50m

$1,464

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 5/22

1:40 am-3:45 pm

2 stops27h 05m

Ko Samui

Sat 6/14

10:55 am-11:00 pm

1 stop23h 05m

$1,763

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 8/6

11:30 am-6:15 pm

3 stops43h 45m

Ko Samui

Fri 8/15

1:30 pm-2:40 pm

2 stops36h 10m

$2,766

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 4/7

8:00 pm-6:15 pm

2 stops35h 15m

Ko Samui

Mon 4/14

1:30 pm-5:10 pm

2 stops38h 40m

$3,118

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Boston to Ko 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 Ko Samui in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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-Ko Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Ko Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Ko Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Ko 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-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Boston to Ko Samui flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to Ko Samui trip
Airlines
Southwest

Enjoy free snacks and non-alcoholic drinks, plus a free drink on special occasions.


Southwest offers two free checked bags, including oversized items like skis or golf clubs.

Read more about Southwestby Marisa Garcia
Spirit Airlines

Spirit's Big Front Seats offer 11 inches more legroom and larger tray tables.


Use Spirit's Bag-O-Tron tool to compare baggage costs and save money.

Read more about Spirit Airlinesby Daniel Scheffler
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more

Best time to book a flight from Boston to Ko Samui

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

Cheapflights Insights

Everything you need to know about your flight from Boston to Ko Samui

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

Find hourly flight availability from Boston to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Boston to Ko Samui at noon. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to Ko Samui. Price data was last updated on March 23, 2025.

Travelers seeking maximum savings on their Boston to Ko 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 Ko Samui by month

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

In terms of precipitation, rainfall in Ko 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 Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

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

If weather is an important factor for your trip to Ko 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 Ko Samui

Get insights into the airlines that provide service to Ko 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 Ko Samui. Reviews last updated March 25, 2025.
To help decide which airline to fly from Boston to Ko Samui, see what other customers have to say about Singapore Airlines, Emirates and Cathay Pacific. 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
1,284 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.7

Entertainment

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
1,284 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.7

Entertainment

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
Emirates
8.0
Very good
3,190 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.7

Entertainment

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
833 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.7

Entertainment

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
3,540 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.7

Entertainment

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
3,745 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.7

Entertainment

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 Ko 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 Ko Samui that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Ko 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
Ko Tao
Ko Pha Ngan

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Top airline flying from Boston to Ko Samui

Discover the top airline that operate flights from Boston to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$1,569Average$1,778FlexibilityNo cancel feeOn-time68%
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