$991+ Cheap flights from Massachusetts 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — USM
Jan 20 — Jan 271
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Massachusetts to Ko Samui
Cheapest flights from Massachusetts to Ko SamuiExplore the most affordable flight options available from Massachusetts to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.
Explore the most affordable flight options available from Massachusetts to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.
This Trip.com deal was found by Cheapflights users on 12/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:40 pmBOS - USM
2 stops35h 40mMultiple Airlines
Sat 12/277:35 pmUSM - BOS
2 stops30h 35mMultiple Airlines
Deal found 12/19![Multiple Airlines logo]()
$2,667
This oojo deal was found by Cheapflights users on 12/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:10 pmBOS - USM
2 stops37h 25mCathay Pacific
Sat 12/277:55 amUSM - BOS
3 stops27h 17mCathay Pacific
Deal found 12/19![Cathay Pacific logo]()
$6,932
This IEagle deal was found by Cheapflights users on 12/19. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/202:55 pmBOS - USM
3 stops39h 20mSingapore Airlines
Sat 12/274:25 pmUSM - BOS
3 stops36h 24mSingapore Airlines
Deal found 12/19![Singapore Airlines logo]()
$10,606
Find flight deals from Massachusetts to Ko Samui
Keep the following information in mind while searching for Massachusetts to Ko Samui flight deals. Data was last updated December 21, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $991 (oojo) |
Cheapflights Fare Finder
Customize your flight search to find flights from Massachusetts 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 December 21, 2025.
Use the filters below to find and compare flights from Massachusetts to Ko Samui that are best for you.
Fly from
Massachusetts
Fly to
Ko Samui
Route
Depart
Return
Price
BostonKo Samui
BOS - USM
BOSUSM
Boston Logan Intl
Mon 3/2
3:40 pm-7:45 am
2 stops28h 05m
Ko Samui
Mon 3/9
8:50 am-3:10 pm
2 stops65h 20m
$991
BostonKo Samui
BOS - USM
BOSUSM
Boston Logan Intl
Sun 2/1
11:00 am-7:45 am
2 stops32h 45m
Ko Samui
Sun 2/8
6:40 pm-8:40 am
2 stops26h 00m
$1,099
BostonKo Samui
BOS - USM
BOSUSM
Boston Logan Intl
Sat 3/14
4:40 pm-7:45 am
2 stops28h 05m
Ko Samui
Sat 3/21
1:45 pm-3:10 pm
2 stops60h 25m
$1,123
BostonKo Samui
BOS - USM
BOSUSM
Boston Logan Intl
Sat 1/10
3:40 pm-7:45 am
2 stops28h 05m
Ko Samui
Mon 2/2
8:50 am-2:10 pm
2 stops65h 20m
$1,253
BostonKo Samui
BOS - USM
BOSUSM
Boston Logan Intl
Sat 1/17
12:30 am-3:40 pm
2 stops27h 10m
Ko Samui
Sun 1/25
1:45 pm-10:00 pm
2 stops44h 15m
$1,435
BostonKo Samui
BOS - USM
BOSUSM
Boston Logan Intl
Sun 3/1
12:30 am-7:35 pm
1 stop31h 05m
Ko Samui
Mon 3/9
4:30 pm-11:00 pm
2 stops41h 30m
$1,578
BostonKo Samui
BOS - USM
BOSUSM
Boston Logan Intl
Sat 3/14
5:57 pm-7:35 pm
2 stops38h 38m
Ko Samui
Sat 3/21
11:40 am-11:00 pm
1 stop22h 20m
$1,706
Best time to book a flight from Massachusetts to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Massachusetts 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 Massachusetts to Ko Samui
What is the cheapest time of day to fly from MA to USM?
Find hourly flight availability from Massachusetts 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 December 21, 2025.
When flying from Massachusetts to Ko Samui, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 16% versus a flight at noon.
What is the cheapest day to fly from Massachusetts to Ko Samui?
Use this chart to determine the cheapest time to fly round-trip from Massachusetts to Ko Samui. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their Massachusetts to Ko Samui flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Massachusetts to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan
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Alternative routes for Massachusetts to Ko Samui
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Massachusetts to Ko Samui
Discover the top airline that operate flights from Massachusetts 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 December 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,778 | Average$1,952 | FlexibilityNo cancel fee | On-time68% |