Cheap flights from Boston (BOS) to Koh Samui (USM) from $749

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOS — USM
May 7 — May 141

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 May 2, 2024.

Round-trip from

$1,045

One-way from

$758
From Boston Logan Intl to Ko Samui
One-way flight from Boston Logan Intl to Ko Samui

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

Tuesday flights are generally found to be more expensive for flights from Boston to Koh Samui. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Koh Samui.

When is the cheapest time to fly from Boston to Koh Samui (BOS - USM)?

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 35% on your trip compared to booking a flight in the morning.

Cheap Cathay Pacific flights from Boston to Koh Samui

Explore cheap flight options specifically provided by Cathay Pacific for the route between Boston and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Consider these cheap Cathay Pacific flights we've found departing from Boston to Koh Samui. Make sure to check back often as deals are often changing.
Tue 8/65:45 pmBOS - USM
2 stops37h 50mCathay Pacific
Sun 8/1110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/1$2,432
Thu 6/2012:17 pmBOS - USM
2 stops43h 18mCathay Pacific
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/2$2,817
Tue 8/610:34 amBOS - USM
2 stops45h 01mCathay Pacific
Sun 8/1110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/2$2,876
Mon 8/55:45 pmBOS - USM
2 stops61h 50mCathay Pacific
Mon 8/1210:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/1$3,025
Thu 6/2012:17 pmBOS - USM
2 stops43h 18mCathay Pacific
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/1$3,059
Wed 6/191:45 amBOS - USM
1 stop29h 50mCathay Pacific
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/2$3,151
Mon 8/51:45 amBOS - USM
1 stop29h 50mCathay Pacific
Sun 8/1110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/2$3,156
Mon 8/51:45 amBOS - USM
1 stop29h 50mCathay Pacific
Sun 8/1110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/1$3,209
Wed 6/191:45 amBOS - USM
1 stop29h 50mCathay Pacific
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/1$3,277

Cheap Singapore Airlines flights from Boston to Koh Samui

Explore cheap flight options specifically provided by Singapore Airlines for the route between Boston and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Some of the best deals we've found on Singapore Airlines flights traveling from Boston to Koh Samui. Make sure to examine the flight information before completing your reservation.
Mon 8/53:20 pmBOS - USM
3 stops42h 55mSingapore Airlines
Mon 8/124:25 pmUSM - BOS
3 stops39h 34mSingapore Airlines
Deal found 5/2$3,396
Mon 8/53:20 pmBOS - USM
3 stops42h 55mSingapore Airlines
Mon 8/121:30 pmUSM - BOS
3 stops42h 29mSingapore Airlines
Deal found 5/1$3,402
Tue 8/68:40 amBOS - USM
2 stops46h 40mSingapore Airlines
Sun 8/114:25 pmUSM - BOS
3 stops39h 34mSingapore Airlines
Deal found 5/1$3,856
Tue 8/611:44 amBOS - USM
3 stops43h 36mSingapore Airlines
Sun 8/114:25 pmUSM - BOS
3 stops42h 01mSingapore Airlines
Deal found 5/2$3,966
Tue 8/63:20 pmBOS - USM
3 stops40h 00mSingapore Airlines
Sun 8/114:25 pmUSM - BOS
3 stops39h 34mSingapore Airlines
Deal found 5/1$4,006
Thu 6/202:40 pmBOS - USM
3 stops40h 40mSingapore Airlines
Sun 7/211:30 pmUSM - BOS
3 stops44h 56mSingapore Airlines
Deal found 5/1$4,036
Thu 6/202:40 pmBOS - USM
3 stops40h 40mSingapore Airlines
Sun 7/211:30 pmUSM - BOS
3 stops42h 29mSingapore Airlines
Deal found 5/2$4,056

Cheap Boston to Koh Samui flights in May & June 2024

Find cheap flight options from Boston to Koh Samui specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Prices were last updated on May 2, 2024.
Listed are some of the best fares we've found on flights departing from Boston to Koh Samui in 2024. Check back regularly for other flight deals.
Thu 6/209:50 pmBOS - USM
2 stops33h 30mMultiple Airlines
Sun 7/219:15 pmUSM - BOS
2 stops33h 40mMultiple Airlines
Deal found 5/2$1,766
Thu 6/209:50 pmBOS - USM
2 stops36h 10mMultiple Airlines
Sun 7/217:30 pmUSM - BOS
2 stops35h 25mMultiple Airlines
Deal found 5/1$1,767
Wed 6/55:10 pmBOS - USM
2 stops33h 35mMultiple Airlines
Wed 6/269:15 amUSM - BOS
2 stops45h 50mMultiple Airlines
Deal found 5/2$2,143
Wed 6/52:25 pmBOS - USM
3 stops40h 20mMultiple Airlines
Wed 6/268:45 amUSM - BOS
2 stops46h 20mMultiple Airlines
Deal found 5/2$2,556
Wed 6/191:45 amBOS - USM
2 stops27h 50mMultiple Airlines
Sun 7/2110:55 amUSM - BOS
2 stops48h 21mMultiple Airlines
Deal found 5/1$2,787
Thu 6/2012:17 pmBOS - USM
2 stops43h 18mCathay Pacific
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/2$2,817
Wed 6/191:45 amBOS - USM
2 stops27h 50mMultiple Airlines
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mMultiple Airlines
Deal found 5/1$2,926
Thu 6/2012:17 pmBOS - USM
2 stops43h 18mCathay Pacific
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/1$3,059
Wed 6/191:45 amBOS - USM
1 stop29h 50mCathay Pacific
Sun 7/2110:55 amUSM - BOS
1 stop22h 25mCathay Pacific
Deal found 5/2$3,151

Boston to Koh Samui 2024 flight deals

Discover exclusive flight deals for travel between Boston and Koh Samui in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Listed are some of the best fares we've found on flights departing from Boston to Koh Samui in 2024. Check back regularly for other flight deals.
Mon 11/49:10 pmBOS - USM
2 stops24h 15mQatar Airways
Thu 11/78:40 pmUSM - BOS
2 stops29h 50mQatar Airways
Deal found 5/1$1,495
Tue 8/610:00 pmBOS - USM
2 stops25h 10mQatar Airways
Sun 8/119:10 pmUSM - BOS
2 stops28h 40mQatar Airways
Deal found 5/1$1,607
Mon 8/59:50 pmBOS - USM
2 stops35h 35mMultiple Airlines
Mon 8/121:30 pmUSM - BOS
2 stops41h 25mMultiple Airlines
Deal found 5/1$1,608
Thu 6/209:50 pmBOS - USM
2 stops33h 30mMultiple Airlines
Sun 7/219:15 pmUSM - BOS
2 stops33h 40mMultiple Airlines
Deal found 5/2$1,766
Thu 6/209:50 pmBOS - USM
2 stops36h 10mMultiple Airlines
Sun 7/217:30 pmUSM - BOS
2 stops35h 25mMultiple Airlines
Deal found 5/1$1,767
Wed 12/2512:05 pmBOS - USM
2 stops31h 05mMultiple Airlines
Tue 12/317:00 amUSM - BOS
2 stops36h 50mMultiple Airlines
Deal found 5/1$2,034
Wed 12/2512:05 pmBOS - USM
2 stops31h 05mMultiple Airlines
Tue 12/317:00 amUSM - BOS
2 stops36h 50mMultiple Airlines
Deal found 5/1$2,047
Wed 6/55:10 pmBOS - USM
2 stops33h 35mMultiple Airlines
Wed 6/269:15 amUSM - BOS
2 stops45h 50mMultiple Airlines
Deal found 5/2$2,143
Wed 12/259:10 pmBOS - USM
3 stops27h 25mMultiple Airlines
Tue 12/317:55 amUSM - BOS
3 stops47h 10mMultiple Airlines
Deal found 5/1$2,424

One-way flights to Koh Samui from Boston

Search for one-way flight options from Boston to Koh Samui. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Some of the best available deals we've found on one-way flights from Boston to Koh Samui. Those seeking round-trip flights from Boston to Koh Samui should utilize the search form at the the top of the page.
Mon 8/2610:00 pmBOS - USM
2 stops24h 20mMultiple Airlines
Deal found 5/1$749
Sun 8/2510:00 pmBOS - USM
2 stops25h 10mQatar Airways
Deal found 5/2$758
Sun 8/251:45 amBOS - USM
1 stop29h 50mCathay Pacific
Deal found 5/1$833
Sun 8/251:45 amBOS - USM
2 stops26h 00mMultiple Airlines
Deal found 5/1$863
Sat 8/241:45 amBOS - USM
1 stop29h 50mCathay Pacific
Deal found 5/2$893
Sat 8/241:45 amBOS - USM
2 stops25h 00mMultiple Airlines
Deal found 5/2$918
Mon 8/266:31 amBOS - USM
3 stops27h 29mCathay Pacific
Deal found 5/1$923
Sun 8/256:31 amBOS - USM
3 stops28h 04mCathay Pacific
Deal found 5/2$983

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 2,864,334 searches. Data last updated May 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,584 - $3,396

Route

Depart

Return

Price

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 8/5

2 stops25h 10m

Ko Samui

Mon 8/12

2 stops30h 35m

$1,584

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Tue 8/6

2 stops25h 10m

Ko Samui

Sun 8/11

2 stops28h 40m

$1,607

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 8/5

2 stops35h 35m

Ko Samui

Mon 8/12

2 stops41h 25m

$1,608

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 6/20

2 stops33h 30m

Ko Samui

Sun 7/21

2 stops33h 40m

$1,766

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 6/20

2 stops36h 10m

Ko Samui

Sun 7/21

2 stops35h 25m

$1,767

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 6/5

2 stops33h 35m

Ko Samui

Wed 6/26

2 stops45h 50m

$2,143

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Tue 8/6

2 stops37h 50m

Ko Samui

Sun 8/11

1 stop22h 25m

$2,432

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 6/20

2 stops43h 18m

Ko Samui

Sun 7/21

1 stop22h 25m

$2,817

Boston Logan IntlKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 8/5

3 stops42h 55m

Ko Samui

Mon 8/12

3 stops39h 34m

$3,396

Flights are sorted by cheapest first

Deals found on 5/2

When is the cheapest time 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 April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Boston to Koh Samui flight should consider departing on Tuesday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Koh Samui by month

Plan your trip from Boston to Koh Samui by taking into account the cheapest months to travel. The average price of a one-way flight from Boston to Koh Samui is currently $865 while a round-trip flight costs $2,124. Price data was last updated on April 28, 2024.

Temperature and rainfall in Koh Samui by month

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

USM

Temperature

80.6 - 84.2 °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 May 2, 2024.
To help decide which airline to fly from Boston to Koh Samui, see what other customers have to say about Cathay Pacific and Singapore Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.3
Very good
1,470 reviews

Comfort

8.1

Crew

8.7

Entertainment

8.2

Overall

8.3

Boarding

8.4

Food

7.8

Reviews

1 / 10

I like the polite and friendly air crew. Boarding from the aircrew was fine and orderly, however the Changi gate staff were disorderly and chaotic. I found the economy seating was way too small for a full service airline. It seems about the same size now as the budget carriers and I’m not sure if the value for money is there anymore. The saving grace with that is the generous baggage allowance. Our Singapore Darwin leg was on a 737-800, a small plane for an almost 5 hour journey. As was the case on our Darwin Singapore leg, the flight was full. So it was quite hot and unpleasant for the hour extra we had to wait on the runway before we actually took off. Total time in that cramped seat was close to 6hrs and no way of sleeping even with the fatigue of our 12.5hr Munich Singapore flight preceding it. I love Singapore Airlines and value our sole full service direct connection from Darwin, but we paid a lot of money for the cheap seats and it appears that the airline has slipped since we last flew with them in 2019.

8.3
Very good
1,470 reviews
8.3
Very good
1,470 reviews

Comfort

8.1

Crew

8.7

Entertainment

8.2

Overall

8.3

Boarding

8.4

Food

7.8

Reviews

1 / 10

I like the polite and friendly air crew. Boarding from the aircrew was fine and orderly, however the Changi gate staff were disorderly and chaotic. I found the economy seating was way too small for a full service airline. It seems about the same size now as the budget carriers and I’m not sure if the value for money is there anymore. The saving grace with that is the generous baggage allowance. Our Singapore Darwin leg was on a 737-800, a small plane for an almost 5 hour journey. As was the case on our Darwin Singapore leg, the flight was full. So it was quite hot and unpleasant for the hour extra we had to wait on the runway before we actually took off. Total time in that cramped seat was close to 6hrs and no way of sleeping even with the fatigue of our 12.5hr Munich Singapore flight preceding it. I love Singapore Airlines and value our sole full service direct connection from Darwin, but we paid a lot of money for the cheap seats and it appears that the airline has slipped since we last flew with them in 2019.

7.8
Good
1,117 reviews
8.3
Very good
1,470 reviews

Comfort

8.1

Crew

8.7

Entertainment

8.2

Overall

8.3

Boarding

8.4

Food

7.8

Reviews

1 / 10

I like the polite and friendly air crew. Boarding from the aircrew was fine and orderly, however the Changi gate staff were disorderly and chaotic. I found the economy seating was way too small for a full service airline. It seems about the same size now as the budget carriers and I’m not sure if the value for money is there anymore. The saving grace with that is the generous baggage allowance. Our Singapore Darwin leg was on a 737-800, a small plane for an almost 5 hour journey. As was the case on our Darwin Singapore leg, the flight was full. So it was quite hot and unpleasant for the hour extra we had to wait on the runway before we actually took off. Total time in that cramped seat was close to 6hrs and no way of sleeping even with the fatigue of our 12.5hr Munich Singapore flight preceding it. I love Singapore Airlines and value our sole full service direct connection from Darwin, but we paid a lot of money for the cheap seats and it appears that the airline has slipped since we last flew with them in 2019.

7.7
Good
4,450 reviews
8.3
Very good
1,470 reviews

Comfort

8.1

Crew

8.7

Entertainment

8.2

Overall

8.3

Boarding

8.4

Food

7.8

Reviews

1 / 10

I like the polite and friendly air crew. Boarding from the aircrew was fine and orderly, however the Changi gate staff were disorderly and chaotic. I found the economy seating was way too small for a full service airline. It seems about the same size now as the budget carriers and I’m not sure if the value for money is there anymore. The saving grace with that is the generous baggage allowance. Our Singapore Darwin leg was on a 737-800, a small plane for an almost 5 hour journey. As was the case on our Darwin Singapore leg, the flight was full. So it was quite hot and unpleasant for the hour extra we had to wait on the runway before we actually took off. Total time in that cramped seat was close to 6hrs and no way of sleeping even with the fatigue of our 12.5hr Munich Singapore flight preceding it. I love Singapore Airlines and value our sole full service direct connection from Darwin, but we paid a lot of money for the cheap seats and it appears that the airline has slipped since we last flew with them in 2019.

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 flights from Boston to Koh Samui for under $1,600 on Cheapflights?

    Yes, there are multiple flights from Boston to Koh Samui for under $1,600. The cheapest flight booked recently is on Multiple Airlines for just $1,584, but on average you can expect to pay $2,507.

  • What are the cheapest airlines flying from Boston to Koh Samui round-trip?

    Cheapflights users have booked flights from Boston to Koh Samui round-trip from $1,607. Another airline that can offer you cheap pricing is Cathay Pacific.

  • What does BOS to USM mean?

    BOS stands for Boston Logan Intl Airport, while USM stands for Ko Samui Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Boston to Koh Samui that include extra baggage allowance?

    The amount of baggage you can bring on your Boston to Koh Samui flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Boston to Koh Samui with specific airlines?

    Yes, Cheapflights allows you to browse and filter Boston to Koh Samui flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Boston to Koh Samui that allow pets onboard?

    Many airlines flying from Boston to Koh Samui offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Boston to Koh Samui?

    Yes, you can often find last-minute deals on Boston to Koh Samui flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Boston to Koh Samui flight deals updated?

    The Boston to Koh Samui flight deals you see on this page were last updated on 5/2.

See more FAQs

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Top 2 airlines flying from Boston to Koh Samui

Discover the top 2 airlines that operate flights from Boston to Koh 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 2,864,334 searches. Data last updated May 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$968Average$1,043FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Qatar AirwaysCheapest$1,392Average$1,581FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Search flights from Boston to Koh Samui by cabin class

Find flights from Boston to Koh Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Koh Samui?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to Koh Samui. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Boston to Koh Samui?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Koh Samui.

Can Cheapflights find flights from Boston to Koh Samui with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to Koh Samui flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Boston to Koh Samui become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Koh Samui from Boston today and book when prices fit your budget.

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