What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Boston to Ko Samui flights?

According to our data, JetBlue have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

What is the most punctual flight time for Boston to Ko Samui flights?

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

How often are flights from Boston to Ko Samui delayed?

Historically, on average around 17% of flights between Boston and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 110 minutes.

When did momondo last update prices for flights from Boston Logan Intl Airport to Ko Samui Airport?

Prices for flights from Boston Logan Intl Airport to Ko Samui Airport are updated daily.

How many operators does momondo search for flights from Boston Logan Intl Airport to Ko Samui Airport?

The number of operators available for flights from Boston Logan Intl Airport to Ko Samui Airport is 1 as of December 2025.

How old do you have to be to fly from Boston Logan Intl Airport to Ko Samui Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The travel and health documents you'll need for your trip to Ko Samui Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ko Samui Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$56 Cheap Flights from Boston to Ko Samui in 2025/26

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Boston to Ko Samui

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 7:10 am

BOS

USM

27h 40m2 stops

7:00 pm - 2:55 pm

USM

BOS

30h 55m2 stops

$974Multiple Airlines

Wed, May 6 - Wed, May 20

3:40 pm - 7:45 am

BOS

USM

28h 05m2 stops

8:50 am - 3:10 pm

USM

BOS

65h 20m2 stops

$990Etihad Airways

Mon, Mar 2 - Mon, Mar 9

3:40 pm - 7:45 am

BOS

USM

28h 05m2 stops

8:50 am - 3:10 pm

USM

BOS

65h 20m2 stops

$991Etihad Airways

Mon, Mar 2 - Mon, Mar 9

4:30 pm - 7:35 am

BOS

USM

28h 05m2 stops

8:50 pm - 2:55 pm

USM

BOS

29h 05m2 stops

$998Etihad Airways

Sun, May 3 - Wed, May 20

4:30 pm - 7:10 am

BOS

USM

27h 40m2 stops

8:50 pm - 2:55 pm

USM

BOS

53h 05m2 stops

$1,018Etihad Airways

Fri, May 8 - Tue, May 19

4:30 pm - 8:15 am

BOS

USM

28h 45m2 stops

8:35 pm - 2:55 pm

USM

BOS

53h 20m2 stops

$1,021Etihad Airways

Fri, May 8 - Sun, May 31

4:30 pm - 7:10 am

BOS

USM

27h 40m2 stops

8:35 pm - 2:55 pm

USM

BOS

29h 20m2 stops

$1,022Etihad Airways

Mon, May 4 - Fri, May 22

4:30 pm - 11:55 am

BOS

USM

56h 25m2 stops

8:50 pm - 2:55 pm

USM

BOS

53h 05m2 stops

$1,023Etihad Airways

Fri, May 8 - Sun, May 31

4:30 pm - 7:10 am

BOS

USM

27h 40m2 stops

5:55 pm - 2:55 pm

USM

BOS

56h 00m2 stops

$1,028Etihad Airways

Sun, May 3 - Sun, May 17

4:30 pm - 7:10 am

BOS

USM

27h 40m2 stops

8:50 pm - 2:55 pm

USM

BOS

29h 05m2 stops

$1,042Etihad Airways

Fri, May 8 - Fri, May 22

Cathay Pacific flights from Boston to Ko Samui

Our best Cathay Pacific deals on Boston to Ko Samui flight tickets

Cathay Pacific

Mar 1

BOS12:30 amBoston Logan Intl

31h 05m

1 stop

USM7:35 pmKo Samui

Mar 9

USM11:40 amKo Samui

22h 20m

1 stop

BOS11:00 pmBoston Logan Intl

$1,771

Find similar

Cathay Pacific

Mar 2

BOS4:24 pmBoston Logan Intl

40h 56m

3 stops

USM9:20 pmKo Samui

Mar 9

USM7:00 amKo Samui

27h 00m

2 stops

BOS11:00 pmBoston Logan Intl

$2,418

Find similar

Etihad Airways flights from Boston to Ko Samui

Our best Etihad Airways deals on Boston to Ko Samui flight tickets

Etihad Airways

Mar 2

BOS3:40 pmBoston Logan Intl

28h 05m

2 stops

USM7:45 amKo Samui

Mar 9

USM8:50 amKo Samui

65h 20m

2 stops

BOS3:10 pmBoston Logan Intl

$991

Find similar

Etihad Airways

May 8

BOS4:30 pmBoston Logan Intl

56h 25m

2 stops

USM11:55 amKo Samui

May 31

USM8:50 pmKo Samui

53h 05m

2 stops

BOS2:55 pmBoston Logan Intl

$1,023

Find similar

Etihad Airways

Apr 8

BOS4:30 pmBoston Logan Intl

27h 40m

2 stops

USM7:10 amKo Samui

Apr 15

USM1:30 pmKo Samui

36h 25m

2 stops

BOS2:55 pmBoston Logan Intl

$1,166

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 5/6

4:30 pm-7:10 am

2 stops27h 40m

Ko Samui

Wed 5/20

7:00 pm-2:55 pm

2 stops30h 55m

$974

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

3:40 pm-7:45 am

2 stops28h 05m

Ko Samui

Mon 3/9

8:50 am-3:10 pm

2 stops65h 20m

$990

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

3:40 pm-7:45 am

2 stops28h 05m

Ko Samui

Mon 3/9

8:50 am-3:10 pm

2 stops65h 20m

$991

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sun 5/3

4:30 pm-7:35 am

2 stops28h 05m

Ko Samui

Wed 5/20

8:50 pm-2:55 pm

2 stops29h 05m

$998

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/8

4:30 pm-7:10 am

2 stops27h 40m

Ko Samui

Tue 5/19

8:50 pm-2:55 pm

2 stops53h 05m

$1,018

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/8

4:30 pm-8:15 am

2 stops28h 45m

Ko Samui

Sun 5/31

8:35 pm-2:55 pm

2 stops53h 20m

$1,021

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 5/4

4:30 pm-7:10 am

2 stops27h 40m

Ko Samui

Fri 5/22

8:35 pm-2:55 pm

2 stops29h 20m

$1,022

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/8

4:30 pm-11:55 am

2 stops56h 25m

Ko Samui

Sun 5/31

8:50 pm-2:55 pm

2 stops53h 05m

$1,023

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sun 5/3

4:30 pm-7:10 am

2 stops27h 40m

Ko Samui

Sun 5/17

5:55 pm-2:55 pm

2 stops56h 00m

$1,028

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/8

4:30 pm-7:10 am

2 stops27h 40m

Ko Samui

Fri 5/22

8:50 pm-2:55 pm

2 stops29h 05m

$1,042

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Boston to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Delays

What is the cheapest day to depart on your flight to Ko Samui?

Our data shows that Friday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $187. Flights from Boston to Ko Samui on a Sunday will generally be more expensive and average around $493. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Boston to Ko Samui flights are usually those with departure times at noon. Our users have found flights to Ko Samui at noon for as low as $296. In the evening is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $469 per ticket.

When to book flights from Boston to Ko Samui

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Ko Samui according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Boston to Ko Samui (BOS to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Ko Samui

Fastest flight time	27h 40m
Direct flights	None

The fastest flight from Boston to Ko Samui takes 27h 40m

There are no direct flights from Boston to Ko Samui. There are no popular flight routes from Boston to Ko Samui.

Search flight deals

How far is Boston Logan Intl to Ko Samui by plane?
The distance between Boston Logan Intl and Ko Samui is about 8802.1 mi. By plane, this route typically takes 27h 40m.
When did momondo last update prices for flights from Boston Logan Intl Airport to Ko Samui Airport?
Prices for flights from Boston Logan Intl Airport to Ko Samui Airport are updated daily.
How many operators does momondo search for flights from Boston Logan Intl Airport to Ko Samui Airport?
The number of operators available for flights from Boston Logan Intl Airport to Ko Samui Airport is 1 as of December 2025.
How old do you have to be to fly from Boston Logan Intl Airport to Ko Samui Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The travel and health documents you'll need for your trip to Ko Samui Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ko Samui Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Boston to Ko Samui?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Boston to Ko Samui is Qatar Airways (100% of total bookings).

Best airlines flying from Boston to Ko Samui

Compare and see reviews for airlines that fly from Boston to Ko Samui with momondo

Airline	Rating	Free Cancellation	Price
Qatar Airways	PriceFrom $1,778	Free Cancellation	Rating 7.4 3,686 reviews		Search Qatar Airways flights

Ko Tao

Ko Pha Ngan

Khanom

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Ko Samui?

Finding the right flight to Ko Samui from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ko Samui quick and easy, saving you time and money.

Can I find flights from Boston to Ko Samui with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Ko Samui flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Ko Samui?

momondo provides multiple filters to help you find the best flight to Ko Samui from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Boston to Ko Samui right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ko Samui from Boston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 1/17

Sat 1/24

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand

Airports servicing Thailand

Popular cities in Thailand

Flights to Bangkokfrom $525

Flights to Phuket Cityfrom $579

Flights to Chiang Maifrom $606

Flights to Krabifrom $862

Flights to Surat Thanifrom $812

Flights to Chiang Raifrom $880

Flights to Udon Thanifrom $889

Flights to Hat Yaifrom $1,210

Flights to Khon Kaenfrom $979

Flights to Ubon Ratchathanifrom $1,244

Flights to Tratfrom $1,361

Flights to Mueang Ranongfrom $907

Fly to other destinations from Boston

Flights from Boston Logan Intl to Cleveland Hopkins Intl

Flights from Boston Logan Intl to Raleigh-Durham

Flights from Boston Logan Intl to Presque Isle

Flights from Boston Logan Intl to Charleston

Flights from Boston Logan Intl to Sarasota Bradenton Intl

Flights from Boston Logan Intl to Grand Rapids Gerald R. Ford Intl

Cheap flights from Boston to Ko Samui from $974

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Ko Samui departing on 5/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Boston to Ko Samui

Cheap round-trip flights

Cheap one-way flights

Cathay Pacific flights from Boston to Ko Samui

Our best Cathay Pacific deals on Boston to Ko Samui flight tickets

Etihad Airways flights from Boston to Ko Samui

Our best Etihad Airways deals on Boston to Ko Samui flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Boston to Ko Samui that are best for you.

See travel insights to Ko Samui from

How to get the cheapest flight ticket from Boston to Ko Samui

What is the cheapest day to depart on your flight to Ko Samui?

What is the cheapest time of day to depart on your flight to Ko Samui?

How often are flights from Boston to Ko Samui delayed?

Historically, on average around 17% of flights between Boston and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 110 minutes.

What is the most punctual flight time for Boston to Ko Samui flights?

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Boston to Ko Samui flights?

According to our data, JetBlue have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

When to book flights from Boston to Ko Samui

Cheap Boston to Ko Samui (BOS to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Ko Samui

Fastest flight time

Direct flights

How far is Boston Logan Intl to Ko Samui by plane?

When did momondo last update prices for flights from Boston Logan Intl Airport to Ko Samui Airport?

How many operators does momondo search for flights from Boston Logan Intl Airport to Ko Samui Airport?

How old do you have to be to fly from Boston Logan Intl Airport to Ko Samui Airport?

What documentation or ID do you need to fly to Ko Samui Airport?

What is the most popular airline from Boston to Ko Samui?

Best airlines flying from Boston to Ko Samui

Compare and see reviews for airlines that fly from Boston to Ko Samui with momondo

Traveling to a place near Ko Samui?

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Ko Samui?

Can I find flights from Boston to Ko Samui with flexible booking policies on momondo?

How can momondo help me find flights from Boston to Ko Samui?

I’m not ready to book a flight from Boston to Ko Samui right now. Can momondo alert me if prices change?

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

Airports servicing Thailand