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Cheap flights from Boston to Ko Samui from $572

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 9/19. 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

Logo
8:15 am - 6:15 pmBOS-USM
47h 00m2 stops
Logo
1:30 pm - 8:16 amUSM-BOS
29h 46m2 stops
$940
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Sat, Sep 13 - Sat, Sep 20
Logo
8:15 am - 6:15 pmBOS-USM
47h 00m2 stops
Logo
10:55 am - 5:59 amUSM-BOS
54h 04m3 stops
$977
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Sat, Sep 13 - Sat, Sep 20
Turkish Airlines Logo
9:35 pm - 8:15 amBOS-USM
23h 40m2 stops
Turkish Airlines Logo
8:50 pm - 7:40 pmUSM-BOS
33h 50m2 stops
$1,145Turkish Airlines
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Thu, Sep 18 - Mon, Sep 22
Turkish Airlines Logo
9:35 pm - 9:20 amBOS-USM
24h 45m2 stops
Turkish Airlines Logo
7:30 pm - 7:40 pmUSM-BOS
35h 10m2 stops
$1,146Turkish Airlines
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Thu, Sep 18 - Mon, Sep 22
Qatar Airways Logo
10:00 pm - 5:30 pmBOS-USM
32h 30m2 stops
Qatar Airways Logo
6:15 pm - 2:55 pmUSM-BOS
31h 40m2 stops
$1,226Qatar Airways
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Fri, Oct 24 - Mon, Oct 27
Qatar Airways Logo
10:00 pm - 1:10 pmBOS-USM
28h 10m2 stops
Qatar Airways Logo
3:50 pm - 1:55 pmUSM-BOS
34h 05m2 stops
$1,300Qatar Airways
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Thu, Oct 9 - Thu, Nov 20
Cathay Pacific Logo
6:16 pm - 6:35 pmBOS-USM
37h 19m2 stops
Cathay Pacific Logo
10:55 am - 11:00 pmUSM-BOS
23h 05m1 stop
$1,527Cathay Pacific
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Thu, Aug 28 - Thu, Sep 25
Cathay Pacific Logo
1:40 am - 6:35 pmBOS-USM
29h 55m1 stop
Cathay Pacific Logo
10:55 am - 11:00 pmUSM-BOS
23h 05m1 stop
$1,547Cathay Pacific
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Wed, Sep 17 - Mon, Sep 22
Singapore Airlines Logo
2:50 pm - 9:05 pmBOS-USM
42h 15m3 stops
Singapore Airlines Logo
1:25 pm - 11:59 pmUSM-BOS
46h 34m2 stops
$2,001Singapore Airlines
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Thu, Jan 15 - Thu, Jan 29
Singapore Airlines Logo
5:55 pm - 6:15 pmBOS-USM
60h 20m2 stops
Singapore Airlines Logo
1:25 pm - 8:30 pmUSM-BOS
43h 05m3 stops
$2,041Singapore Airlines
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Sat, Jan 17 - Thu, Jan 29

Turkish Airlines flights from Boston to Ko Samui

Our best Turkish Airlines deals on Boston to Ko Samui flight tickets
Turkish Airlines
Sep 18
BOS9:35 pmBoston Logan Intl
23h 40m
2 stops
USM8:15 amKo Samui
Sep 22
USM8:50 pmKo Samui
33h 50m
2 stops
BOS7:40 pmBoston Logan Intl
$1,145
Find similar
Turkish Airlines
Sep 18
BOS9:35 pmBoston Logan Intl
24h 45m
2 stops
USM9:20 amKo Samui
Sep 22
USM7:30 pmKo Samui
35h 10m
2 stops
BOS7:40 pmBoston Logan Intl
$1,146
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Turkish Airlines
Sep 13
BOS9:35 pmBoston Logan Intl
33h 25m
2 stops
USM6:00 pmKo Samui
Sep 20
USM1:30 pmKo Samui
41h 10m
2 stops
BOS7:40 pmBoston Logan Intl
$1,172
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Qatar Airways flights from Boston to Ko Samui

Our best Qatar Airways deals on Boston to Ko Samui flight tickets
Qatar Airways
Oct 24
BOS10:00 pmBoston Logan Intl
32h 30m
2 stops
USM5:30 pmKo Samui
Oct 27
USM6:15 pmKo Samui
31h 40m
2 stops
BOS2:55 pmBoston Logan Intl
$1,226
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Qatar Airways
Oct 9
BOS10:00 pmBoston Logan Intl
28h 10m
2 stops
USM1:10 pmKo Samui
Nov 20
USM3:50 pmKo Samui
34h 05m
2 stops
BOS1:55 pmBoston Logan Intl
$1,300
Find similar
Qatar Airways
Aug 28
BOS5:59 pmBoston Logan Intl
29h 31m
3 stops
USM10:30 amKo Samui
Sep 25
USM5:55 pmKo Samui
32h 10m
2 stops
BOS3:05 pmBoston Logan Intl
$1,507
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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 July 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

Sat 9/13

8:15 am-6:15 pm

2 stops47h 00m

Ko Samui

Sat 9/20

1:30 pm-8:16 am

2 stops29h 46m

$940

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 9/13

8:15 am-6:15 pm

2 stops47h 00m

Ko Samui

Sat 9/20

10:55 am-5:59 am

3 stops54h 04m

$977

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 9/18

9:35 pm-8:15 am

2 stops23h 40m

Ko Samui

Mon 9/22

8:50 pm-7:40 pm

2 stops33h 50m

$1,145

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 9/18

9:35 pm-9:20 am

2 stops24h 45m

Ko Samui

Mon 9/22

7:30 pm-7:40 pm

2 stops35h 10m

$1,146

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 10/24

10:00 pm-5:30 pm

2 stops32h 30m

Ko Samui

Mon 10/27

6:15 pm-2:55 pm

2 stops31h 40m

$1,226

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 10/9

10:00 pm-1:10 pm

2 stops28h 10m

Ko Samui

Thu 11/20

3:50 pm-1:55 pm

2 stops34h 05m

$1,300

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 8/28

6:16 pm-6:35 pm

2 stops37h 19m

Ko Samui

Thu 9/25

10:55 am-11:00 pm

1 stop23h 05m

$1,527

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 9/17

1:40 am-6:35 pm

1 stop29h 55m

Ko Samui

Mon 9/22

10:55 am-11:00 pm

1 stop23h 05m

$1,547

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 1/15

2:50 pm-9:05 pm

3 stops42h 15m

Ko Samui

Thu 1/29

1:25 pm-11:59 pm

2 stops46h 34m

$2,001

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 1/17

5:55 pm-6:15 pm

2 stops60h 20m

Ko Samui

Thu 1/29

1:25 pm-8:30 pm

3 stops43h 05m

$2,041

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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

Best Price Found

$572

Fastest flight time

23h 40m

Direct flights

None

Airports in Ko Samui

1 airport
The best one-way flight to Ko Samui from Boston in the past 72 hours is $572. The best round-trip flight deal from Boston to Ko Samui found on momondo in the last 72 hours is $940.
The fastest flight from Boston to Ko Samui takes 23h 40m
There are no direct flights from Boston to Ko Samui. Popular non-direct route for this connection is Boston Logan Intl Airport - Ko Samui Airport.
There is 1 airport near Ko Samui: Ko Samui (USM)
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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 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?

  • 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
3,609 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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