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Ko Samui

$624+ Cheap flights from Boston (BOS) to Ko Samui (USM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — USM
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Find cheap flights from Boston to Ko Samui with Cheapflights

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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 November 26, 2025.

This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:35 pmBOS - USM
2 stops32h 40mBritish Airways
Mon 12/294:25 pmUSM - BOS
2 stops41h 30mBritish Airways
Deal found 11/25$2,662
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/229:35 pmBOS - USM
2 stops32h 40mBritish Airways
Mon 12/294:25 pmUSM - BOS
2 stops39h 20mBritish Airways
Deal found 11/25$2,717
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:35 pmBOS - USM
2 stops32h 40mBritish Airways
Wed 12/314:25 pmUSM - BOS
2 stops39h 20mBritish Airways
Deal found 11/25$2,771
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/229:35 pmBOS - USM
2 stops32h 40mBritish Airways
Wed 12/314:25 pmUSM - BOS
2 stops39h 20mBritish Airways
Deal found 11/25$2,826
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:15 pmBOS - USM
2 stops35h 00mBritish Airways
Mon 12/294:25 pmUSM - BOS
2 stops41h 30mBritish Airways
Deal found 11/25$2,853
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:30 amBOS - USM
1 stop31h 05mMultiple Airlines
Mon 12/2911:40 amUSM - BOS
1 stop22h 20mMultiple Airlines
Deal found 11/25$2,882
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:30 amBOS - USM
2 stops25h 35mBritish Airways
Mon 12/294:25 pmUSM - BOS
2 stops41h 30mBritish Airways
Deal found 11/25$2,910
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:30 amBOS - USM
2 stops25h 35mBritish Airways
Wed 12/314:25 pmUSM - BOS
2 stops39h 20mBritish Airways
Deal found 11/25$2,962
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:30 amBOS - USM
2 stops25h 35mBritish Airways
Wed 12/314:25 pmUSM - BOS
2 stops39h 20mBritish Airways
Deal found 11/25$3,019
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:15 pmBOS - USM
2 stops37h 50mBritish Airways
Mon 12/294:25 pmUSM - BOS
2 stops39h 20mBritish Airways
Deal found 11/25$3,024
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:30 amBOS - USM
2 stops24h 45mMultiple Airlines
Mon 12/2911:40 amUSM - BOS
1 stop22h 20mMultiple Airlines
Deal found 11/25$3,121
This British Airways deal was found by Cheapflights users on 11/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:15 pmBOS - USM
2 stops37h 50mBritish Airways
Wed 12/311:25 pmUSM - BOS
2 stops42h 20mBritish Airways
Deal found 11/25$3,133

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 November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$954
(oojo)

One-way from

$624
(Trip.com)
Provider with most accurate pricing for Boston Logan Intl-Ko Samui flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Ko Samui flights.
Search Deals
From Boston Logan Intl to Ko Samui
Search Deals
One-way flight from Boston Logan Intl to Ko Samui
Search Deals

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 November 26, 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

Tue 12/23

9:35 pm-6:15 pm

2 stops32h 40m

Ko Samui

Mon 12/29

4:25 pm-9:55 pm

2 stops41h 30m

$2,662

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Tue 12/23

9:35 pm-6:15 pm

2 stops32h 40m

Ko Samui

Wed 12/31

4:25 pm-7:45 pm

2 stops39h 20m

$2,771

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 12/22

9:35 pm-6:15 pm

2 stops32h 40m

Ko Samui

Wed 12/31

4:25 pm-7:45 pm

2 stops39h 20m

$2,826

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 12/24

7:15 pm-6:15 pm

2 stops35h 00m

Ko Samui

Mon 12/29

4:25 pm-9:55 pm

2 stops41h 30m

$2,853

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 12/25

7:30 am-9:05 pm

2 stops25h 35m

Ko Samui

Mon 12/29

4:25 pm-9:55 pm

2 stops41h 30m

$2,910

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 12/24

7:30 am-9:05 pm

2 stops25h 35m

Ko Samui

Wed 12/31

4:25 pm-7:45 pm

2 stops39h 20m

$2,962

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 12/25

7:30 am-9:05 pm

2 stops25h 35m

Ko Samui

Wed 12/31

4:25 pm-7:45 pm

2 stops39h 20m

$3,019

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 12/20

7:15 pm-9:05 pm

2 stops37h 50m

Ko Samui

Mon 12/29

4:25 pm-7:45 pm

2 stops39h 20m

$3,024

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 12/24

12:30 am-1:15 pm

2 stops24h 45m

Ko Samui

Mon 12/29

11:40 am-10:00 pm

1 stop22h 20m

$3,121

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sun 12/21

9:35 pm-6:15 pm

2 stops32h 40m

Ko Samui

Wed 12/31

1:25 pm-7:45 pm

2 stops42h 20m

$3,133

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

Showing 1-10 of 17 results
1
2

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 November.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Ko Samui flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 November 26, 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 36% 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 30, 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.

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 November 26, 2025.
See what other customers who have flown with Qatar Airways from Boston to Ko Samui have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,675 reviews

Crew

7.9

Entertainment

7.4

Food

7.3

Boarding

7.5

Comfort

7.4

Overall

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Qatar Airways
7.4
Good
3,675 reviews
Qatar Airways
7.4
Good
3,675 reviews

Crew

7.9

Entertainment

7.4

Food

7.3

Boarding

7.5

Comfort

7.4

Overall

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

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.

  • How long is the flight from Boston to Ko Samui?

    Departing from Boston to Ko Samui will take you 32h 40m. Boston and Ko Samui are separated by a distance of 8799 mi.

  • 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.

See more FAQs

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

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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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$1,778Average$1,952FlexibilityNo cancel feeOn-time68%

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