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Cheap flights from Boston to Ko Samui from $691

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 6/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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 - 8:15 am
BOS
-
USM
28h 50m
2 stops
Multiple Airlines Logo
9:00 pm - 2:40 pm
USM
-
BOS
28h 40m
2 stops
$958Multiple Airlines
Sat, May 9 - Fri, May 22
Multiple Airlines Logo
4:25 pm - 8:15 am
BOS
-
USM
28h 50m
2 stops
Multiple Airlines Logo
9:00 pm - 2:40 pm
USM
-
BOS
28h 40m
2 stops
$967Multiple Airlines
Sat, May 9 - Fri, May 22
Multiple Airlines Logo
4:25 pm - 8:15 am
BOS
-
USM
28h 50m
2 stops
Multiple Airlines Logo
8:50 pm - 2:40 pm
USM
-
BOS
28h 50m
2 stops
$969Multiple Airlines
Sat, May 9 - Fri, May 22
Multiple Airlines Logo
4:25 pm - 8:15 am
BOS
-
USM
28h 50m
2 stops
Multiple Airlines Logo
7:10 pm - 2:40 pm
USM
-
BOS
30h 30m
2 stops
$983Multiple Airlines
Fri, May 8 - Sun, May 31
Multiple Airlines Logo
4:25 pm - 7:30 am
BOS
-
USM
28h 05m
2 stops
Multiple Airlines Logo
8:55 am - 2:40 pm
USM
-
BOS
64h 45m
2 stops
$1,054Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Etihad Airways Logo
4:25 pm - 11:15 am
BOS
-
USM
31h 50m
2 stops
Etihad Airways Logo
5:25 pm - 2:40 pm
USM
-
BOS
32h 15m
2 stops
$1,118Etihad Airways
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
4:25 pm - 6:15 pm
BOS
-
USM
38h 50m
2 stops
Multiple Airlines Logo
7:45 pm - 2:40 pm
USM
-
BOS
29h 55m
2 stops
$1,171Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Etihad Airways Logo
4:25 pm - 6:15 pm
BOS
-
USM
38h 50m
2 stops
Etihad Airways Logo
8:55 am - 2:40 pm
USM
-
BOS
64h 45m
2 stops
$1,261Etihad Airways
Wed, Apr 8 - Wed, Apr 15
Emirates Logo
11:05 pm - 6:00 pm
BOS
-
USM
55h 55m
2 stops
Emirates Logo
5:55 pm - 2:10 pm
USM
-
BOS
31h 15m
2 stops
$1,343Emirates
Mon, May 4 - Mon, May 11
Multiple Airlines Logo
4:25 pm - 7:40 pm
BOS
-
USM
40h 15m
2 stops
Multiple Airlines Logo
8:55 am - 2:40 pm
USM
-
BOS
64h 45m
2 stops
$1,383Multiple Airlines
Wed, Aug 5 - Fri, Aug 14

Etihad Airways flights from Boston to Ko Samui

Our best Etihad Airways deals on Boston to Ko Samui flight tickets
Etihad Airways
Sep 17
BOS4:25 pmBoston Logan Intl
31h 50m
2 stops
USM11:15 amKo Samui
Sep 21
USM5:25 pmKo Samui
32h 15m
2 stops
BOS2:40 pmBoston Logan Intl
$1,118
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
$1,261

Cathay Pacific flights from Boston to Ko Samui

Our best Cathay Pacific deals on Boston to Ko Samui flight tickets
Cathay Pacific
Sep 15
BOS1:45 amBoston Logan Intl
30h 55m
1 stop
USM7:40 pmKo Samui
Sep 23
USM11:55 amKo Samui
22h 10m
1 stop
BOS11:05 pmBoston Logan Intl
$1,544
Cathay Pacific
Sep 16
BOS1:45 amBoston Logan Intl
30h 55m
1 stop
USM7:40 pmKo Samui
Sep 21
USM11:55 amKo Samui
22h 10m
1 stop
BOS11:05 pmBoston Logan Intl
$1,577
Cathay Pacific
Sep 16
BOS1:45 amBoston Logan Intl
30h 55m
1 stop
USM7:40 pmKo Samui
Sep 21
USM11:55 amKo Samui
22h 10m
1 stop
BOS11:05 pmBoston Logan Intl
$1,618

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 March 22, 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

Cheapest round-trip
Quickest round-trip

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 5/9

4:25 pm-8:15 am

2 stops28h 50m

Ko Samui

Fri 5/22

9:00 pm-2:40 pm

2 stops28h 40m

$958

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 5/9

4:25 pm-8:15 am

2 stops28h 50m

Ko Samui

Fri 5/22

9:00 pm-2:40 pm

2 stops28h 40m

$967

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Sat 5/9

4:25 pm-8:15 am

2 stops28h 50m

Ko Samui

Fri 5/22

8:50 pm-2:40 pm

2 stops28h 50m

$969

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

7:10 pm-2:40 pm

2 stops30h 30m

$983

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 4/8

4:25 pm-7:30 am

2 stops28h 05m

Ko Samui

Wed 4/15

8:55 am-2:40 pm

2 stops64h 45m

$1,054

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Thu 9/17

4:25 pm-11:15 am

2 stops31h 50m

Ko Samui

Mon 9/21

5:25 pm-2:40 pm

2 stops32h 15m

$1,118

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 4/8

4:25 pm-6:15 pm

2 stops38h 50m

Ko Samui

Wed 4/15

7:45 pm-2:40 pm

2 stops29h 55m

$1,171

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 4/8

4:25 pm-6:15 pm

2 stops38h 50m

Ko Samui

Wed 4/15

8:55 am-2:40 pm

2 stops64h 45m

$1,261

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 5/4

11:05 pm-6:00 pm

2 stops55h 55m

Ko Samui

Mon 5/11

5:55 pm-2:10 pm

2 stops31h 15m

$1,343

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 8/5

4:25 pm-7:40 pm

2 stops40h 15m

Ko Samui

Fri 8/14

8:55 am-2:40 pm

2 stops64h 45m

$1,383

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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.

Can stopping save me money on Boston to Ko Samui flights?

You could potentially save up to 62% on your flight if you consider stops on a Boston to Ko Samui flight.

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 45m

Direct flights

None
The fastest flight from Boston to Ko Samui takes 27h 45m
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 45m.

  • 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 $1,813Free CancellationRating
7.4
3,733 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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