Which airports can I use when flying from Boston to Ko Samui?

Flights from Boston to Ko Samui usually depart from Boston Logan Intl (BOS) and arrive at Ko Samui (USM).

What cabin classes can I book on flights from Boston to Ko Samui?

Two cabin classes are available on flights from Boston to Ko Samui: • Economy Class • Business Class

Which airports do connecting flights from Boston to Ko Samui pass through?

Most connecting flights from Boston to Ko Samui pass through Hong Kong Intl (HKG), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from Boston to Ko Samui?

Yes. Flexible dates can save you up to 55% on flights from Boston to Ko Samui. Monday is the cheapest departure day at $987 round-trip on average, while Saturday is the most expensive at $2,173, a difference of $1,186. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Ko Samui?

Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Choeng Mon Beach. These are among the most viewed places in Ko Samui on KAYAK.

Do I need a passport to fly from Boston to Ko Samui?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from Boston to Ko Samui looking right now?

One-way fares from Boston to Ko Samui are currently higher than usual. Average one-way flight prices are about $1,328, which is 76% above the typical average for this route.

What is the time difference between Boston and Ko Samui?

Ko Samui is 11 hours ahead of Boston (Indochina Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Ko Samui Airport (USM)?

Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates averaging $29 for economy cars. Top options include: • Drive Car Rental • Alamo • Sixt • Enterprise Rent-A-Car • Thai Rent

How much should I expect to pay for a Boston to Ko Samui flight?

Round-trip flights from Boston to Ko Samui range from $987 to $1,481, with an average of $1,121 over the past 12 months. Anything below $987 counts as a good deal.

What's the cheapest day of the week to fly from Boston to Ko Samui?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Boston to Ko Samui. It’s 12% cheaper than the average day, while Saturday is the most expensive, with prices 93% higher.

Which airline is the cheapest to fly from Boston to Ko Samui?

Cathay Pacific ($1,186) offered the cheapest round-trip ticket from Boston to Ko Samui in the last 5 days.

What is the cheapest layover airport when flying from Boston to Ko Samui?

Flights via Hong Kong Intl (HKG) offer the most affordable fares, with an average round-trip price of $2,382. Based on KAYAK data over the past 3 months.

When flying from Boston to Ko Samui which airport offers the shortest layover?

Hong Kong Intl (HKG) had the shortest average connection time for Boston to Ko Samui layovers at 17h 17m over the past 3 months.

$666 CHEAP FLIGHTS from Boston to Ko Samui (BOS - USM)

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$1,048

Typical prices: $987-$1,481

Multiple Airlines

Tue 2/20Sat 3/3

BOS - USM • 2 stops

Cheapest one-way

$666

Typical prices: $753-$795

Multiple Airlines

Wed 2/14

BOS - USM • 2 stops

When to travel

February

Cheapest • 12% price drop

February

Most popular

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We hope you love your trip to Ko Samui!

Flight Deals

Cheap Flights from Boston to Ko Samui (BOS-USM)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Boston to Ko Samui

Sat, Feb 20 - Wed, Mar 3

3:40 pm - 8:40 amBOS Boston Logan Intl-USM Ko Samui

29h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

7:10 pm - 1:40 pmUSM Ko Samui-BOS Boston Logan Intl

30h 30m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,048Multiple Airlines

Fri, Feb 5 - Sat, Feb 13

3:40 pm - 7:45 amBOS Boston Logan Intl-USM Ko Samui

28h 05m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

9:30 pm - 1:40 pmUSM Ko Samui-BOS Boston Logan Intl

28h 10m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,057Multiple Airlines

Fri, Feb 12 - Sat, Feb 20

3:40 pm - 6:55 amBOS Boston Logan Intl-USM Ko Samui

27h 15m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

7:55 am - 1:40 pmUSM Ko Samui-BOS Boston Logan Intl

41h 45m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,156Multiple Airlines

Tue, Feb 2 - Tue, Feb 16

3:40 pm - 8:40 amBOS Boston Logan Intl-USM Ko Samui

29h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

9:30 pm - 1:40 pmUSM Ko Samui-BOS Boston Logan Intl

28h 10m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,178Multiple Airlines

Tue, Apr 27 - Wed, May 5

1:45 am - 7:40 pmBOS Boston Logan Intl-USM Ko Samui

30h 55m1 stop Hong Kong Intl

11:55 am - 11:05 pmUSM Ko Samui-BOS Boston Logan Intl

22h 10m1 stop Hong Kong Intl

$1,186Cathay Pacific

Tue, Apr 27 - Wed, May 5

1:45 am - 12:45 pmBOS Boston Logan Intl-USM Ko Samui

24h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi

7:50 am - 11:05 pmUSM Ko Samui-BOS Boston Logan Intl

26h 15m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$1,197Multiple Airlines

Tue, Apr 27 - Wed, May 5

1:45 am - 12:45 pmBOS Boston Logan Intl-USM Ko Samui

24h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:55 am - 11:05 pmUSM Ko Samui-BOS Boston Logan Intl

22h 10m1 stop Hong Kong Intl

$1,198Multiple Airlines

Wed, Nov 11 - Mon, Nov 16

12:30 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 05m1 stop Hong Kong Intl

11:40 am - 10:00 pmUSM Ko Samui-BOS Boston Logan Intl

22h 20m1 stop Hong Kong Intl

$1,214Cathay Pacific

Sun, Mar 7 - Sun, Mar 14

12:30 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 05m1 stop Hong Kong Intl

11:40 am - 10:00 pmUSM Ko Samui-BOS Boston Logan Intl

22h 20m1 stop Hong Kong Intl

$1,260Cathay Pacific

Wed, Nov 11 - Mon, Nov 16

12:30 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 05m1 stop Hong Kong Intl

11:40 am - 10:00 pmUSM Ko Samui-BOS Boston Logan Intl

22h 20m1 stop Hong Kong Intl

$1,266Cathay Pacific

Recent last minute flight deals from Boston to Ko Samui

Sun, Nov 1 - Sat, Nov 14

3:40 pm - 7:10 amBOS Boston Logan Intl-USM Ko Samui

27h 30m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

6:15 pm - 1:40 pmUSM Ko Samui-BOS Boston Logan Intl

31h 25m2 stops Phuket City Abu Dhabi Zayed Intl

$1,402Etihad Airways

Sat, Oct 31 - Sat, Nov 14

12:55 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 40m1 stop Hong Kong Intl

11:40 am - 6:51 amUSM Ko Samui-BOS Boston Logan Intl

31h 11m2 stops Hong Kong Intl Los Angeles

$1,417Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

3:40 pm - 9:20 amBOS Boston Logan Intl-USM Ko Samui

29h 40m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

3:05 pm - 1:40 pmUSM Ko Samui-BOS Boston Logan Intl

34h 35m2 stops Phuket City Abu Dhabi Zayed Intl

$1,422Etihad Airways

Sat, Oct 31 - Sat, Nov 14

12:55 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 40m1 stop Hong Kong Intl

11:40 am - 10:00 pmUSM Ko Samui-BOS Boston Logan Intl

22h 20m1 stop Hong Kong Intl

$1,426Cathay Pacific

Sun, Nov 1 - Sat, Nov 14

8:40 pm - 10:40 amBOS Boston Logan Intl-USM Ko Samui

50h 00m2 stops Doha Hamad Intl Phuket City

9:30 pm - 1:55 pmUSM Ko Samui-BOS Boston Logan Intl

28h 25m2 stops Bangkok Suvarnabhumi Doha Hamad Intl

$1,439Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

8:40 pm - 11:55 amBOS Boston Logan Intl-USM Ko Samui

51h 15m2 stops Doha Hamad Intl Phuket City

5:40 pm - 1:55 pmUSM Ko Samui-BOS Boston Logan Intl

32h 15m2 stops Bangkok Suvarnabhumi Doha Hamad Intl

$1,477Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

8:40 pm - 10:40 amBOS Boston Logan Intl-USM Ko Samui

50h 00m2 stops Doha Hamad Intl Phuket City

7:00 pm - 1:55 pmUSM Ko Samui-BOS Boston Logan Intl

30h 55m2 stops Bangkok Suvarnabhumi Doha Hamad Intl

$1,505Multiple Airlines

Sat, Oct 31 - Sat, Nov 14

12:55 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 40m1 stop Hong Kong Intl

8:30 am - 10:00 pmUSM Ko Samui-BOS Boston Logan Intl

25h 30m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$1,947Cathay Pacific

Sat, Oct 31 - Sat, Nov 14

12:55 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 40m1 stop Hong Kong Intl

10:20 am - 10:00 pmUSM Ko Samui-BOS Boston Logan Intl

23h 40m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$1,954Cathay Pacific

Sat, Oct 31 - Sat, Nov 14

12:55 am - 7:35 pmBOS Boston Logan Intl-USM Ko Samui

31h 40m1 stop Hong Kong Intl

2:15 pm - 10:00 pmUSM Ko Samui-BOS Boston Logan Intl

43h 45m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$2,338Cathay Pacific

Booking Insights

Price, demand and travel trends for Boston to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

What's the cheapest day of the week to fly from Boston to Ko Samui?: Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Boston to Ko Samui. It’s 12% cheaper than the average day, while Saturday is the most expensive, with prices 93% higher.

Find deals

Expert advice

Our travel experts

Chris Dong

Expert on Cape Air

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Harriet Baskas

Expert on JetBlue

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

High season	February
Cheapest flight	$666

The most popular month to fly with an average 71% increase in travelers.

One-way flight from Boston to Ko Samui

When to book flights from Boston to Ko Samui

Are your dates flexible? Find out the best times to travel from Boston to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Boston to Ko Samui?
Two cabin classes are available on flights from Boston to Ko Samui:

• Economy Class
• Business Class
Do I need a passport to fly from Boston to Ko Samui?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Boston to Ko Samui flight?
Round-trip flights from Boston to Ko Samui range from $987 to $1,481, with an average of $1,121 over the past 12 months. Anything below $987 counts as a good deal.
How are flight prices from Boston to Ko Samui looking right now?
One-way fares from Boston to Ko Samui are currently higher than usual. Average one-way flight prices are about $1,328, which is 76% above the typical average for this route.
What car rental options are available at Ko Samui Airport (USM)?
Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates averaging $29 for economy cars. Top options include:

• Drive Car Rental
• Alamo
• Sixt
• Enterprise Rent-A-Car
• Thai Rent
Which airports can I use when flying from Boston to Ko Samui?
Flights from Boston to Ko Samui usually depart from Boston Logan Intl (BOS) and arrive at Ko Samui (USM).
Which airports do connecting flights from Boston to Ko Samui pass through?
Most connecting flights from Boston to Ko Samui pass through Hong Kong Intl (HKG), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from Boston to Ko Samui?
Yes. Flexible dates can save you up to 55% on flights from Boston to Ko Samui. Monday is the cheapest departure day at $987 round-trip on average, while Saturday is the most expensive at $2,173, a difference of $1,186.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What is the time difference between Boston and Ko Samui?
Ko Samui is 11 hours ahead of Boston (Indochina Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Ko Samui?
Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Choeng Mon Beach. These are among the most viewed places in Ko Samui on KAYAK.

If your dates are flexible, aim for a Monday departure and avoid flying on Saturday. On this route, Monday flights average $987, about $1,186 less than Saturday fares (55% savings) based on the last 12 months.
If you can choose when to travel, plan your Boston to Ko Samui trip for February. Fares historically average $987 round-trip in that month - typically $1,186 less than the most expensive month, which is December (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.

• Ozo Chaweng Samui - Sha Extra Plus
• Melia Koh Samui
• Amari Koh Samui

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BOS - USM

$666 Find Cheap Flights from Boston to Ko Samui - Compare and Save

Everything you should know

Cheap Flights from Boston to Ko Samui (BOS-USM)

Recent round-trip flight deals from Boston to Ko Samui

Recent one-way flight deals from Boston to Ko Samui

Recent last minute flight deals from Boston to Ko Samui

Price, demand and travel trends for Boston to Ko Samui flights

What's the cheapest day of the week to fly from Boston to Ko Samui?

Which airline is the cheapest to fly from Boston to Ko Samui?

What is the cheapest layover airport when flying from Boston to Ko Samui?

When flying from Boston to Ko Samui which airport offers the shortest layover?

Expert advice for your flight from Boston to Ko Samui

Key details for Boston to Ko Samui flights

High season

Cheapest flight

When to book flights from Boston to Ko Samui

Your Boston to Ko Samui flight questions, answered

Your guide to booking Boston to Ko Samui flights

More options for your flight from Boston to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Boston to Ko Samui

Find direct flights to and from Boston and Ko Samui

Flights from domestic origins to Ko Samui

Flights to other popular destinations