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. Other layover airports each see under 5%.

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

Yes. Being flexible with your travel dates can save you up to 55% on the Boston to Ko Samui route. 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 Fishermans Village. 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.

Have flight prices from Boston to Ko Samui changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $986 to $7,719. That means the highest observed fare was about 8x higher than the lowest one.

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 $1,366, which is 81% 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 starting from around $14 for economy cars. Top options include: • Drive Car Rental • Alamo • Sixt • Enterprise Rent-A-Car • Hertz

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

Round-trip flights from Boston to Ko Samui range from $1,020 to $1,481, with an average of $1,121 over the past 12 months. Anything below $1,020 counts as a good deal.

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 1,037 minutes over the past 3 months.

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

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Cheapest round-trip

$986

Typical prices: $1,020-$1,481

Multiple Airlines

Sat 10/27Sat 11/3

BOS - USM • 2 stops

Cheapest one-way

$666

Typical prices: $591-$795

Etihad Airways

Thu 11/1

BOS - USM • 2 stops

When to travel

February

Cheapest • 12% price drop

March

Most popular

Good to know

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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

Recent round-trip flight deals from Boston to Ko Samui

Tue, Oct 27 - Tue, Nov 3

4:40 pm - 10:40 amBOS Boston Logan Intl-USM Ko Samui

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

5:40 pm - 2:10 pmUSM Ko Samui-BOS Boston Logan Intl

32h 30m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$986Multiple Airlines

Wed, Oct 28 - Tue, Nov 10

4:40 pm - 10:40 amBOS Boston Logan Intl-USM Ko Samui

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

3:50 pm - 2:10 pmUSM Ko Samui-BOS Boston Logan Intl

34h 20m2 stops Phuket City Abu Dhabi Zayed Intl

$987Multiple Airlines

Mon, Oct 5 - Mon, Oct 12

4:25 pm - 7:10 amBOS Boston Logan Intl-USM Ko Samui

27h 45m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

11:25 am - 2:40 pmUSM Ko Samui-BOS Boston Logan Intl

38h 15m2 stops Phuket City Abu Dhabi Zayed Intl

$987Multiple Airlines

Mon, Oct 5 - Wed, Oct 21

4:25 pm - 8:35 amBOS Boston Logan Intl-USM Ko Samui

29h 10m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

8:50 pm - 2:40 pmUSM Ko Samui-BOS Boston Logan Intl

28h 50m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,011Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

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

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

2:25 pm - 2:10 pmUSM Ko Samui-BOS Boston Logan Intl

35h 45m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,047Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

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

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

5:05 pm - 2:10 pmUSM Ko Samui-BOS Boston Logan Intl

33h 05m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,118Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

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

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

5:05 pm - 2:10 pmUSM Ko Samui-BOS Boston Logan Intl

33h 05m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

$1,127Multiple Airlines

Mon, Oct 5 - Mon, Oct 12

4:25 pm - 7:10 amBOS Boston Logan Intl-USM Ko Samui

27h 45m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

8:00 am - 2:40 pmUSM Ko Samui-BOS Boston Logan Intl

41h 40m2 stops Phuket City Abu Dhabi Zayed Intl

$1,165Etihad Airways

Mon, Feb 1 - Tue, Feb 16

12:30 am - 3:35 pmBOS Boston Logan Intl-USM Ko Samui

27h 05m2 stops Hong Kong Intl Bangkok Suvarnabhumi

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

24h 00m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$1,181Multiple Airlines

Fri, Jan 8 - Mon, Jan 18

3:00 pm - 6:15 pmBOS Boston Logan Intl-USM Ko Samui

39h 15m2 stops Los Angeles Singapore Changi

1:25 pm - 5:04 pmUSM Ko Samui-BOS Boston Logan Intl

39h 39m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$2,535Singapore Airlines

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 from Boston to Ko Samui with more confidence.

Airlines

Layovers

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

Etihad Airways ($1,165) offered the cheapest round-trip ticket from Boston to Ko Samui in the last 5 days.

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.

Low season	June
High season	March
Cheapest flight	$666

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.

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. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from Boston to Ko Samui?
Yes. Being flexible with your travel dates can save you up to 55% on the Boston to Ko Samui route. 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 Fishermans Village. 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.
Have flight prices from Boston to Ko Samui changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $986 to $7,719. That means the highest observed fare was about 8x higher than the lowest one.
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 $1,366, which is 81% 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 starting from around $14 for economy cars. Top options include:
• Drive Car Rental
• Alamo
• Sixt
• Enterprise Rent-A-Car
• Hertz
How much should I expect to pay for a Boston to Ko Samui flight?
Round-trip flights from Boston to Ko Samui range from $1,020 to $1,481, with an average of $1,121 over the past 12 months. Anything below $1,020 counts as a good deal.

If your dates can be flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average $987 - about $1,186 less than Saturday (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 $1,738 less than the most expensive month, which is August (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
- Amari Koh Samui
- Cosi Samui Chaweng Beach

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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

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

What is the cheapest airline 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

Low season

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