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Ko Samui

$516+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — USM
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$996
(FlightHub)

One-way from

$874
(Mytrip)
From Boston Logan Intl to Ko Samui
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One-way flight 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 September 17, 2025.

This Etihad Airways deal was found by Cheapflights users on 9/16. 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.
Mon 11/173:40 pmBOS - USM
2 stops28h 30mEtihad Airways
Tue 11/255:40 pmUSM - BOS
2 stops32h 30mEtihad Airways
Deal found 9/16$996
This Gurufare deal was found by Cheapflights users on 9/16. 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 11/173:40 pmBOS - USM
2 stops28h 30mEtihad Airways
Thu 11/279:10 pmUSM - BOS
2 stops29h 00mEtihad Airways
Deal found 9/16$1,020
This FlightHub deal was found by Cheapflights users on 9/16. 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.
Wed 11/198:00 pmBOS - USM
2 stops24h 10mTurkish Airlines
Tue 11/258:20 pmUSM - BOS
2 stops33h 45mTurkish Airlines
Deal found 9/16$1,082
This Turkish Airlines deal was found by Cheapflights users on 9/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:00 pmBOS - USM
2 stops29h 05mTurkish Airlines
Mon 11/247:35 pmUSM - BOS
2 stops34h 30mTurkish Airlines
Deal found 9/16$1,095
This KAYAK deal was found by Cheapflights users on 9/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/208:00 pmBOS - USM
2 stops28h 35mTurkish Airlines
Wed 11/266:35 pmUSM - BOS
2 stops35h 30mTurkish Airlines
Deal found 9/16$1,140
This Turkish Airlines deal was found by Cheapflights users on 9/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:00 pmBOS - USM
2 stops29h 05mTurkish Airlines
Mon 11/247:35 pmUSM - BOS
2 stops34h 30mTurkish Airlines
Deal found 9/16$1,151
This Turkish Airlines deal was found by Cheapflights users on 9/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/208:00 pmBOS - USM
2 stops23h 30mTurkish Airlines
Fri 11/283:50 pmUSM - BOS
2 stops38h 15mTurkish Airlines
Deal found 9/16$1,290
This Etihad Airways deal was found by Cheapflights users on 9/14. 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.
Sun 11/303:40 pmBOS - USM
2 stops28h 05mEtihad Airways
Thu 12/49:10 pmUSM - BOS
2 stops29h 00mEtihad Airways
Deal found 9/14$1,321
This Etihad Airways deal was found by Cheapflights users on 9/16. 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 11/213:40 pmBOS - USM
2 stops27h 30mEtihad Airways
Tue 11/259:10 pmUSM - BOS
2 stops29h 00mEtihad Airways
Deal found 9/16$1,331
This Etihad Airways deal was found by Cheapflights users on 9/16. 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 11/213:40 pmBOS - USM
2 stops27h 30mEtihad Airways
Thu 11/279:10 pmUSM - BOS
2 stops29h 00mEtihad Airways
Deal found 9/16$1,428
This Turkish Airlines deal was found by Cheapflights users on 9/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/218:00 pmBOS - USM
2 stops25h 20mTurkish Airlines
Mon 11/247:35 pmUSM - BOS
2 stops34h 30mTurkish Airlines
Deal found 9/16$1,495
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/138:00 pmBOS - USM
2 stops34h 15mTurkish Airlines
Mon 12/226:40 pmUSM - BOS
2 stops35h 25mTurkish Airlines
Deal found 9/15$1,791

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 September 17, 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 11/18

3:40 pm-7:30 am

2 stops27h 50m

Ko Samui

Wed 11/26

9:10 pm-2:10 pm

2 stops29h 00m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 11/17

3:40 pm-8:10 am

2 stops28h 30m

Ko Samui

Tue 11/25

5:40 pm-2:10 pm

2 stops32h 30m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 11/20

3:40 pm-7:10 am

2 stops27h 30m

Ko Samui

Thu 11/27

9:10 pm-2:10 pm

2 stops29h 00m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 11/17

3:40 pm-6:25 pm

2 stops38h 45m

Ko Samui

Mon 11/24

5:40 pm-2:10 pm

2 stops32h 30m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 11/17

3:40 pm-3:40 pm

2 stops36h 00m

Ko Samui

Wed 11/26

1:45 pm-2:10 pm

2 stops36h 25m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Tue 11/18

3:40 pm-7:10 am

2 stops27h 30m

Ko Samui

Tue 11/25

8:45 pm-2:10 pm

2 stops29h 25m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 11/19

3:40 pm-7:10 am

2 stops27h 30m

Ko Samui

Thu 11/27

9:10 pm-2:10 pm

2 stops29h 00m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 11/19

3:40 pm-7:10 am

2 stops27h 30m

Ko Samui

Fri 11/28

8:20 pm-2:10 pm

2 stops29h 50m

$1,020

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 11/21

3:40 pm-7:10 am

2 stops27h 30m

Ko Samui

Fri 11/28

8:20 pm-2:10 pm

2 stops29h 50m

$1,020

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 2/28

3:40 pm-7:10 am

2 stops27h 30m

Ko Samui

Sat 3/14

7:35 pm-3:10 pm

2 stops30h 35m

$1,070

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 23 results
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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 September 17, 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 37% 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 September 17, 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
3,622 reviews

Comfort

7.4

Entertainment

7.4

Food

7.3

Boarding

7.5

Crew

7.9

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
3,622 reviews
Qatar Airways
7.4
Good
3,622 reviews

Comfort

7.4

Entertainment

7.4

Food

7.3

Boarding

7.5

Crew

7.9

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 27h 50m. 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

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

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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$1,778Average$1,952FlexibilityNo cancel feeOn-time68%

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