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Cheap flights from Boston to Ko Samui from $516

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Ko Samui departing on 1/13. 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

Etihad Airways Logo
3:40 pm - 7:45 amBOS-USM
28h 05m2 stops
Etihad Airways Logo
6:40 pm - 3:10 pmUSM-BOS
31h 30m2 stops
$985Etihad Airways
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Mon, Mar 2 - Mon, Mar 9
Etihad Airways Logo
3:40 pm - 8:10 amBOS-USM
28h 30m2 stops
Etihad Airways Logo
7:35 pm - 3:10 pmUSM-BOS
30h 35m2 stops
$995Etihad Airways
Find Deal
Mon, Mar 2 - Mon, Mar 9
Etihad Airways Logo
3:40 pm - 6:25 pmBOS-USM
38h 45m2 stops
Etihad Airways Logo
5:40 pm - 2:10 pmUSM-BOS
32h 30m2 stops
$996Etihad Airways
Find Deal
Mon, Nov 17 - Mon, Nov 24
Turkish Airlines Logo
8:00 pm - 8:10 amBOS-USM
24h 10m2 stops
Turkish Airlines Logo
8:20 pm - 6:05 pmUSM-BOS
33h 45m2 stops
$1,082Turkish Airlines
Find Deal
Wed, Nov 19 - Tue, Nov 25
Turkish Airlines Logo
8:00 pm - 1:05 pmBOS-USM
29h 05m2 stops
Turkish Airlines Logo
7:35 pm - 6:05 pmUSM-BOS
34h 30m2 stops
$1,095Turkish Airlines
Find Deal
Wed, Nov 19 - Mon, Nov 24
Emirates Logo
11:05 pm - 6:15 pmBOS-USM
32h 10m2 stops
Emirates Logo
11:10 am - 1:55 pmUSM-BOS
38h 45m2 stops
$1,525Emirates
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Wed, Oct 29 - Wed, Nov 5
Multiple Airlines Logo
12:30 am - 2:55 pmBOS-USM
26h 25m2 stops
Multiple Airlines Logo
7:55 am - 11:00 pmUSM-BOS
26h 05m2 stops
$1,834Multiple Airlines
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Sun, Mar 1 - Mon, Mar 9
Multiple Airlines Logo
12:30 am - 2:55 pmBOS-USM
26h 25m2 stops
Multiple Airlines Logo
9:20 am - 11:00 pmUSM-BOS
24h 40m2 stops
$1,931Multiple Airlines
Find Deal
Fri, Feb 27 - Sat, Mar 14
Singapore Airlines Logo
11:25 am - 6:15 pmBOS-USM
42h 50m3 stops
Singapore Airlines Logo
4:25 pm - 12:15 amUSM-BOS
43h 50m2 stops
$2,151Singapore Airlines
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Mon, Nov 17 - Thu, Nov 27
Singapore Airlines Logo
1:40 pm - 6:15 pmBOS-USM
40h 35m3 stops
Singapore Airlines Logo
4:25 pm - 4:53 pmUSM-BOS
36h 28m3 stops
$2,310Singapore Airlines
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Mon, Nov 17 - Mon, Nov 24

Turkish Airlines flights from Boston to Ko Samui

Our best Turkish Airlines deals on Boston to Ko Samui flight tickets
Turkish Airlines
Nov 19
BOS8:00 pmBoston Logan Intl
24h 10m
2 stops
USM8:10 amKo Samui
Nov 25
USM8:20 pmKo Samui
33h 45m
2 stops
BOS6:05 pmBoston Logan Intl
$1,082
Find similar
Turkish Airlines
Nov 19
BOS8:00 pmBoston Logan Intl
29h 05m
2 stops
USM1:05 pmKo Samui
Nov 24
USM7:35 pmKo Samui
34h 30m
2 stops
BOS6:05 pmBoston Logan Intl
$1,095
Find similar
Turkish Airlines
Nov 20
BOS8:00 pmBoston Logan Intl
28h 35m
2 stops
USM12:35 pmKo Samui
Nov 26
USM6:35 pmKo Samui
35h 30m
2 stops
BOS6:05 pmBoston Logan Intl
$1,140
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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
USM6:40 pmKo Samui
31h 30m
2 stops
BOS3:10 pmBoston Logan Intl
$985
Find similar
Etihad Airways
Mar 2
BOS3:40 pmBoston Logan Intl
28h 30m
2 stops
USM8:10 amKo Samui
Mar 9
USM7:35 pmKo Samui
30h 35m
2 stops
BOS3:10 pmBoston Logan Intl
$995
Find similar
Etihad Airways
Nov 17
BOS3:40 pmBoston Logan Intl
38h 45m
2 stops
USM6:25 pmKo Samui
Nov 24
USM5:40 pmKo Samui
32h 30m
2 stops
BOS2:10 pmBoston Logan Intl
$996
Find similar

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 September 16, 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

6:40 pm-3:10 pm

2 stops31h 30m

$985

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

3:40 pm-8:10 am

2 stops28h 30m

Ko Samui

Mon 3/9

7:35 pm-3:10 pm

2 stops30h 35m

$995

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 11/17

3:40 pm-6:25 pm

2 stops38h 45m

Ko Samui

Mon 11/24

5:40 pm-2:10 pm

2 stops32h 30m

$996

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 11/19

8:00 pm-8:10 am

2 stops24h 10m

Ko Samui

Tue 11/25

8:20 pm-6:05 pm

2 stops33h 45m

$1,082

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 11/19

8:00 pm-1:05 pm

2 stops29h 05m

Ko Samui

Mon 11/24

7:35 pm-6:05 pm

2 stops34h 30m

$1,095

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 10/29

11:05 pm-6:15 pm

2 stops32h 10m

Ko Samui

Wed 11/5

11:10 am-1:55 pm

2 stops38h 45m

$1,525

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sun 3/1

12:30 am-2:55 pm

2 stops26h 25m

Ko Samui

Mon 3/9

7:55 am-11:00 pm

2 stops26h 05m

$1,834

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 2/27

12:30 am-2:55 pm

2 stops26h 25m

Ko Samui

Sat 3/14

9:20 am-11:00 pm

2 stops24h 40m

$1,931

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 11/17

11:25 am-6:15 pm

3 stops42h 50m

Ko Samui

Thu 11/27

4:25 pm-12:15 am

2 stops43h 50m

$2,151

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 11/17

1:40 pm-6:15 pm

3 stops40h 35m

Ko Samui

Mon 11/24

4:25 pm-4:53 pm

3 stops36h 28m

$2,310

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 23h 10m.

  • 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
3,624 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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