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. Other stopover 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 ฿32,758 return on average, while Saturday is the most expensive at ฿72,120, a difference of ฿39,362. 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 Chaweng Beach, Lamai Beach, and Hin Ta and Hin Yai Rocks. 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, return flight prices on this route showed a wide range, from about ฿32,724 to ฿255,822. 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 ฿46,514, which is 86% 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.

Which car hire options are available at Ko Samui Airport (USM)?

Ko Samui Airport (USM) hosts 5 major car hire companies, with daily rates starting from around ฿450 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?

Return flights from Boston to Ko Samui range from ฿33,852 to ฿49,153, with an average of ฿37,204 over the past 12 months. Anything below ฿33,852 counts as a good deal.

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

Flights via Hong Kong Intl (HKG) offer the most affordable fares, with an average return price of ฿79,051. Based on KAYAK data over the past 3 months.

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

Hong Kong Intl (HKG) had the shortest average connection time for Boston to Ko Samui stopovers at 1,037 minutes over the past 3 months.

฿22,104 CHEAP FLIGHTS from Boston to Ko Samui (BOS - USM)

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Cheapest return flight

฿32,724

Typical prices: ฿33,852-฿49,153

Multiple Airlines

Sat 27/10Sat 3/11

BOS - USM • 2 stops

Cheapest one-way flight

฿22,104

Typical prices: ฿19,628-฿26,372

เอทิฮัดแอร์เวย์

Thu 1/11

BOS - USM • 2 stops

When to travel

February

Cheapest • 12% price drop

March

Most popular

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We hope you enjoy 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.

Return

One-way

Recent return flight deals from Boston to Ko Samui

Tue 27 Oct - Tue 3 Nov

16:40 - 10:40BOS Boston Logan Intl-USM Ko Samui

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

17:40 - 14:10USM Ko Samui-BOS Boston Logan Intl

32h 30m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

฿32,724Multiple Airlines

Mon 5 Oct - Mon 12 Oct

16:25 - 07:10BOS Boston Logan Intl-USM Ko Samui

27h 45m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

11:25 - 14:40USM Ko Samui-BOS Boston Logan Intl

38h 15m2 stops Phuket City Abu Dhabi Zayed Intl

฿32,758Multiple Airlines

Mon 5 Oct - Wed 21 Oct

16:25 - 08:35BOS Boston Logan Intl-USM Ko Samui

29h 10m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

20:50 - 14:40USM Ko Samui-BOS Boston Logan Intl

28h 50m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

฿33,554Multiple Airlines

Sun 1 Nov - Sat 14 Nov

15:40 - 10:40BOS Boston Logan Intl-USM Ko Samui

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

14:25 - 14:10USM Ko Samui-BOS Boston Logan Intl

35h 45m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

฿34,749Multiple Airlines

Sun 1 Nov - Sat 14 Nov

15:40 - 10:40BOS Boston Logan Intl-USM Ko Samui

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

17:05 - 14:10USM Ko Samui-BOS Boston Logan Intl

33h 05m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

฿37,105Multiple Airlines

Sun 1 Nov - Sat 14 Nov

15:40 - 10:40BOS Boston Logan Intl-USM Ko Samui

31h 00m2 stops Abu Dhabi Zayed Intl Phuket City

17:05 - 14:10USM Ko Samui-BOS Boston Logan Intl

33h 05m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

฿37,404Multiple Airlines

Mon 5 Oct - Mon 12 Oct

16:25 - 07:10BOS Boston Logan Intl-USM Ko Samui

27h 45m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

08:00 - 14:40USM Ko Samui-BOS Boston Logan Intl

41h 40m2 stops Phuket City Abu Dhabi Zayed Intl

฿38,665เอทิฮัดแอร์เวย์

Mon 1 Feb - Tue 16 Feb

00:30 - 15:40BOS Boston Logan Intl-USM Ko Samui

27h 10m2 stops Hong Kong Intl Bangkok Suvarnabhumi

08:30 - 22:00USM Ko Samui-BOS Boston Logan Intl

25h 30m2 stops Bangkok Suvarnabhumi Hong Kong Intl

฿39,196Multiple Airlines

Mon 25 Jan - Wed 3 Feb

15:40 - 07:10BOS Boston Logan Intl-USM Ko Samui

27h 30m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

08:50 - 14:10USM Ko Samui-BOS Boston Logan Intl

65h 20m2 stops Chiang Mai Abu Dhabi Zayed Intl

฿39,329เอทิฮัดแอร์เวย์

Tue 27 Oct - Tue 10 Nov

01:30 - 19:35BOS Boston Logan Intl-USM Ko Samui

31h 05m1 stop Hong Kong Intl

08:30 - 22:00USM Ko Samui-BOS Boston Logan Intl

25h 30m2 stops Bangkok Suvarnabhumi Hong Kong Intl

฿39,760Multiple 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

Stopovers

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

เอทิฮัดแอร์เวย์ (฿38,665) offered the cheapest return ticket from Boston to Ko Samui in the last 5 days.

Find deals

Low season	June
High season	March
Cheapest flight	฿22,104

Flights 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 return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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).
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 stopover 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 ฿32,758 return on average, while Saturday is the most expensive at ฿72,120, a difference of ฿39,362. 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 Chaweng Beach, Lamai Beach, and Hin Ta and Hin Yai Rocks. 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, return flight prices on this route showed a wide range, from about ฿32,724 to ฿255,822. 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 ฿46,514, which is 86% 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.
Which car hire options are available at Ko Samui Airport (USM)?
Ko Samui Airport (USM) hosts 5 major car hire companies, with daily rates starting from around ฿450 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?
Return flights from Boston to Ko Samui range from ฿33,852 to ฿49,153, with an average of ฿37,204 over the past 12 months. Anything below ฿33,852 counts as a good deal.

If your dates are flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average ฿32,758 – about ฿39,362 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 ฿32,758 return in that month – typically ฿57,683 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
- Cosi Samui Chaweng Beach
- Melia Koh Samui

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BOS - USM

฿22,104 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 return 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 stopover airport when flying from Boston to Ko Samui?

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

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 hire

Information on your arrival and departure airports

Cabin class types available on flights from Boston to Ko Samui

Flights from domestic origins to Ko Samui

Flights to other popular destinations