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Cheap flights from Boston to Ko Samui from $1,083

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 5/8. 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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0 bags

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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.
Multiple Airlines Logo
4:25 pm - 7:10 am
BOS
-
USM
27h 45m
2 stops
Multiple Airlines Logo
7:10 pm - 2:40 pm
USM
-
BOS
30h 30m
2 stops
$1,083Multiple Airlines
Fri, May 8 - Sun, May 31
Multiple Airlines Logo
4:25 pm - 11:55 am
BOS
-
USM
32h 30m
2 stops
Multiple Airlines Logo
9:00 pm - 2:40 pm
USM
-
BOS
28h 40m
2 stops
$1,104Multiple Airlines
Sat, May 9 - Fri, May 22
Etihad Airways Logo
3:40 pm - 7:45 am
BOS
-
USM
28h 05m
2 stops
Etihad Airways Logo
8:50 am - 3:10 pm
USM
-
BOS
65h 20m
2 stops
$1,133Etihad Airways
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
4:25 pm - 10:30 am
BOS
-
USM
31h 05m
2 stops
Multiple Airlines Logo
5:55 pm - 2:40 pm
USM
-
BOS
31h 45m
2 stops
$1,154Multiple Airlines
Sat, May 9 - Fri, May 22
Multiple Airlines Logo
8:00 pm - 6:15 pm
BOS
-
USM
34h 15m
2 stops
Multiple Airlines Logo
7:10 pm - 7:05 pm
USM
-
BOS
34h 55m
2 stops
$1,181Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Etihad Airways Logo
4:25 pm - 8:35 am
BOS
-
USM
29h 10m
2 stops
Etihad Airways Logo
7:15 pm - 2:40 pm
USM
-
BOS
30h 25m
2 stops
$1,196Etihad Airways
Fri, May 8 - Sun, May 31
Multiple Airlines Logo
4:25 pm - 2:45 pm
BOS
-
USM
35h 20m
2 stops
Multiple Airlines Logo
6:00 am - 2:40 pm
USM
-
BOS
43h 40m
2 stops
$1,201Multiple Airlines
Mon, Apr 6 - Mon, Apr 13
Turkish Airlines Logo
9:50 pm - 6:15 pm
BOS
-
USM
57h 25m
2 stops
Turkish Airlines Logo
1:30 pm - 7:55 pm
USM
-
BOS
41h 25m
2 stops
$1,223Turkish Airlines
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
4:25 pm - 8:15 am
BOS
-
USM
28h 50m
2 stops
Multiple Airlines Logo
8:35 pm - 2:40 pm
USM
-
BOS
29h 05m
2 stops
$1,230Multiple Airlines
Fri, May 8 - Sun, May 31
Turkish Airlines Logo
9:50 pm - 6:15 pm
BOS
-
USM
33h 25m
2 stops
Turkish Airlines Logo
7:55 pm - 7:55 pm
USM
-
BOS
35h 00m
2 stops
$1,255Turkish Airlines
Wed, Apr 8 - Wed, Apr 15

Turkish Airlines flights from Boston to Ko Samui

Our best Turkish Airlines deals on Boston to Ko Samui flight tickets
Turkish Airlines
Apr 8
BOS9:50 pmBoston Logan Intl
57h 25m
2 stops
USM6:15 pmKo Samui
Apr 15
USM1:30 pmKo Samui
41h 25m
2 stops
BOS7:55 pmBoston Logan Intl
$1,223
Turkish Airlines
Apr 8
BOS9:50 pmBoston Logan Intl
33h 25m
2 stops
USM6:15 pmKo Samui
Apr 15
USM7:55 pmKo Samui
35h 00m
2 stops
BOS7:55 pmBoston Logan Intl
$1,255

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
$1,133
Etihad Airways
May 8
BOS4:25 pmBoston Logan Intl
29h 10m
2 stops
USM8:35 amKo Samui
May 31
USM7:15 pmKo Samui
30h 25m
2 stops
BOS2:40 pmBoston Logan Intl
$1,196
Etihad Airways
Apr 8
BOS4:25 pmBoston Logan Intl
38h 50m
2 stops
USM6:15 pmKo Samui
Apr 15
USM8:55 amKo Samui
64h 45m
2 stops
BOS2:40 pmBoston Logan Intl
$1,341

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 February 4, 2026.
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

Fri 5/8

4:25 pm-7:10 am

2 stops27h 45m

Ko Samui

Sun 5/31

7:10 pm-2:40 pm

2 stops30h 30m

$1,083

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 5/9

4:25 pm-11:55 am

2 stops32h 30m

Ko Samui

Fri 5/22

9:00 pm-2:40 pm

2 stops28h 40m

$1,104

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

$1,133

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 5/9

4:25 pm-10:30 am

2 stops31h 05m

Ko Samui

Fri 5/22

5:55 pm-2:40 pm

2 stops31h 45m

$1,154

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

8:00 pm-6:15 pm

2 stops34h 15m

Ko Samui

Mon 3/9

7:10 pm-7:05 pm

2 stops34h 55m

$1,181

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/8

4:25 pm-8:35 am

2 stops29h 10m

Ko Samui

Sun 5/31

7:15 pm-2:40 pm

2 stops30h 25m

$1,196

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 4/6

4:25 pm-2:45 pm

2 stops35h 20m

Ko Samui

Mon 4/13

6:00 am-2:40 pm

2 stops43h 40m

$1,201

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 4/8

9:50 pm-6:15 pm

2 stops57h 25m

Ko Samui

Wed 4/15

1:30 pm-7:55 pm

2 stops41h 25m

$1,223

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/8

4:25 pm-8:15 am

2 stops28h 50m

Ko Samui

Sun 5/31

8:35 pm-2:40 pm

2 stops29h 05m

$1,230

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 4/8

9:50 pm-6:15 pm

2 stops33h 25m

Ko Samui

Wed 4/15

7:55 pm-7:55 pm

2 stops35h 00m

$1,255

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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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

Fastest flight time

23h 25m

Direct flights

None
The fastest flight from Boston to Ko Samui takes 23h 25m
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 23h 25m.

  • 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
3,730 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 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.

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