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Cheap flights from Boston to Ko Samui from $961

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 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Etihad Airways Logo
3:40 pm - 7:45 amBOS-USM
28h 05m2 stops
Etihad Airways Logo
8:50 am - 3:10 pmUSM-BOS
65h 20m2 stops
$961Etihad Airways
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Mon, Mar 2 - Mon, Mar 9
Etihad Airways Logo
3:40 pm - 8:40 amBOS-USM
29h 00m2 stops
Etihad Airways Logo
8:50 am - 3:10 pmUSM-BOS
65h 20m2 stops
$976Etihad Airways
Find Deal
Mon, Mar 2 - Mon, Mar 9
Etihad Airways Logo
3:40 pm - 10:35 amBOS-USM
30h 55m2 stops
Etihad Airways Logo
8:30 pm - 3:10 pmUSM-BOS
53h 40m2 stops
$1,022Etihad Airways
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Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
4:30 pm - 7:20 amBOS-USM
27h 50m2 stops
Multiple Airlines Logo
8:55 am - 2:55 pmUSM-BOS
65h 00m2 stops
$1,131Multiple Airlines
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Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
12:30 am - 7:35 amBOS-USM
43h 05m2 stops
Multiple Airlines Logo
8:20 pm - 10:00 pmUSM-BOS
61h 40m2 stops
$1,186Multiple Airlines
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Fri, Jan 9 - Mon, Jan 19
Cathay Pacific Logo
10:23 am - 7:35 pmBOS-USM
45h 12m2 stops
Cathay Pacific Logo
11:40 am - 11:00 pmUSM-BOS
22h 20m1 stop
$1,399Cathay Pacific
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Mon, Mar 2 - Mon, Mar 9
Cathay Pacific Logo
5:57 pm - 7:35 pmBOS-USM
37h 38m2 stops
Cathay Pacific Logo
11:40 am - 11:00 pmUSM-BOS
22h 20m1 stop
$1,419Cathay Pacific
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Mon, Mar 2 - Mon, Mar 9
Singapore Airlines Logo
5:55 pm - 9:05 pmBOS-USM
39h 10m2 stops
Singapore Airlines Logo
1:25 pm - 8:14 pmUSM-BOS
41h 49m3 stops
$1,993Singapore Airlines
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Mon, Mar 2 - Mon, Mar 9
Singapore Airlines Logo
1:25 pm - 6:15 pmBOS-USM
40h 50m3 stops
Singapore Airlines Logo
4:25 pm - 5:50 pmUSM-BOS
37h 25m3 stops
$3,920Singapore Airlines
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Wed, Jan 7 - Tue, Jan 27
Japan Airlines Logo
12:15 pm - 8:40 amBOS-USM
32h 25m2 stops
Japan Airlines Logo
7:00 am - 5:35 pmUSM-BOS
46h 35m2 stops
$4,742Japan Airlines
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Wed, Jan 7 - Tue, Jan 27

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
$961
Find similar
Etihad Airways
Mar 2
BOS3:40 pmBoston Logan Intl
29h 00m
2 stops
USM8:40 amKo Samui
Mar 9
USM8:50 amKo Samui
65h 20m
2 stops
BOS3:10 pmBoston Logan Intl
$976
Find similar
Etihad Airways
Mar 1
BOS3:40 pmBoston Logan Intl
30h 55m
2 stops
USM10:35 amKo Samui
Mar 8
USM8:30 pmKo Samui
53h 40m
2 stops
BOS3:10 pmBoston Logan Intl
$1,022
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Cathay Pacific flights from Boston to Ko Samui

Our best Cathay Pacific deals on Boston to Ko Samui flight tickets
Cathay Pacific
Mar 2
BOS10:23 amBoston Logan Intl
45h 12m
2 stops
USM7:35 pmKo Samui
Mar 9
USM11:40 amKo Samui
22h 20m
1 stop
BOS11:00 pmBoston Logan Intl
$1,399
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Cathay Pacific
Mar 2
BOS5:57 pmBoston Logan Intl
37h 38m
2 stops
USM7:35 pmKo Samui
Mar 9
USM11:40 amKo Samui
22h 20m
1 stop
BOS11:00 pmBoston Logan Intl
$1,419
Find similar
Cathay Pacific
Nov 29
BOS12:30 amBoston Logan Intl
31h 05m
1 stop
USM7:35 pmKo Samui
Dec 4
USM11:40 amKo Samui
22h 20m
1 stop
BOS10:00 pmBoston Logan Intl
$1,476
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momondo Fare Finder

 
Customize your flight search to find flights from Boston to Ko 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, momondo users made 832,500 searches. Data last updated October 31, 2025.
Use the filters below to find and compare flights from Boston to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

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

$961

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

3:40 pm-8:40 am

2 stops29h 00m

Ko Samui

Mon 3/9

8:50 am-3:10 pm

2 stops65h 20m

$976

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sun 3/1

3:40 pm-10:35 am

2 stops30h 55m

Ko Samui

Sun 3/8

8:30 pm-3:10 pm

2 stops53h 40m

$1,022

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 4/8

4:30 pm-7:20 am

2 stops27h 50m

Ko Samui

Wed 4/15

8:55 am-2:55 pm

2 stops65h 00m

$1,131

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 1/9

12:30 am-7:35 am

2 stops43h 05m

Ko Samui

Mon 1/19

8:20 pm-10:00 pm

2 stops61h 40m

$1,186

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

10:23 am-7:35 pm

2 stops45h 12m

Ko Samui

Mon 3/9

11:40 am-11:00 pm

1 stop22h 20m

$1,399

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

5:57 pm-7:35 pm

2 stops37h 38m

Ko Samui

Mon 3/9

11:40 am-11:00 pm

1 stop22h 20m

$1,419

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

5:55 pm-9:05 pm

2 stops39h 10m

Ko Samui

Mon 3/9

1:25 pm-8:14 pm

3 stops41h 49m

$1,993

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 1/7

1:25 pm-6:15 pm

3 stops40h 50m

Ko Samui

Tue 1/27

4:25 pm-5:50 pm

3 stops37h 25m

$3,920

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 1/7

12:15 pm-8:40 am

2 stops32h 25m

Ko Samui

Tue 1/27

7:00 am-5:35 pm

2 stops46h 35m

$4,742

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Ko Samui from

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

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

Direct flights

None
There are no direct flights from Boston to Ko Samui. There are no popular flight routes from Boston to Ko Samui.
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  • 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 24h 05m.

  • 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?

  • 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?

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 AirwaysPriceFrom $1,778Free CancellationRating
7.4
3,661 reviews
Search Qatar Airways flights

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao
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.

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