$516 Cheap Flights from Boston (BOS) to Samui Intl. Airport (USM)

View $516 flight on Tue, Feb 17, 2026Opens in a new window

Popular airlines from Logan International Airport (BOS) to Samui Intl. Airport (USM)

Cheap Flights from Boston to Samui Intl. Airport (BOS-USM)

Prices were available within the past 7 days and start at $516 for one-way flights and $996 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Sun, Oct 19 - Sun, Nov 2
BOS
Boston
USM
Koh Samui
$996 Roundtrip, just found
$996
Roundtrip
just found
Select Etihad Airways flight, departing Sun, Oct 19 from Boston to Koh Samui, returning Sun, Nov 2, priced at $996 just found
Etihad Airways
Wed, Mar 11 - Wed, Mar 18
BOS
Boston
USM
Koh Samui
$998 Roundtrip, found 10 hours ago
$998
Roundtrip
found 10 hours ago
Select Etihad Airways flight, departing Wed, Mar 11 from Boston to Koh Samui, returning Wed, Mar 18, priced at $998 found 10 hours ago
Etihad Airways
Thu, Oct 23 - Wed, Nov 5
BOS
Boston
USM
Koh Samui
$1,000 Roundtrip, found 10 hours ago
$1,000
Roundtrip
found 10 hours ago
Select Etihad Airways flight, departing Thu, Oct 23 from Boston to Koh Samui, returning Wed, Nov 5, priced at $1,000 found 10 hours ago
Etihad Airways
Sun, Oct 5 - Tue, Oct 14
BOS
Boston
USM
Koh Samui
$1,000 Roundtrip, found 5 days ago
$1,000
Roundtrip
found 5 days ago
Select Etihad Airways flight, departing Sun, Oct 5 from Boston to Koh Samui, returning Tue, Oct 14, priced at $1,000 found 5 days ago
Etihad Airways
Wed, Mar 11 - Wed, Mar 18
BOS
Boston
USM
Koh Samui
$1,002 Roundtrip, found 10 hours ago
$1,002
Roundtrip
found 10 hours ago
Select Etihad Airways flight, departing Wed, Mar 11 from Boston to Koh Samui, returning Wed, Mar 18, priced at $1,002 found 10 hours ago
Etihad Airways
Tue, Nov 11 - Tue, Nov 18
BOS
Boston
USM
Koh Samui
$1,006 Roundtrip, found 16 hours ago
$1,006
Roundtrip
found 16 hours ago
Select Etihad Airways flight, departing Tue, Nov 11 from Boston to Koh Samui, returning Tue, Nov 18, priced at $1,006 found 16 hours ago
Japan Airlines
Sat, Jan 17 - Tue, Jan 27
BOS
Boston
USM
Koh Samui
$1,015 Roundtrip, found 1 day ago
$1,015
Roundtrip
found 1 day ago
Select Japan Airlines flight, departing Sat, Jan 17 from Boston to Koh Samui, returning Tue, Jan 27, priced at $1,015 found 1 day ago
United
Mon, Oct 6 - Mon, Oct 13
BOS
Boston
USM
Koh Samui
$1,032 Roundtrip, found 5 days ago
$1,032
Roundtrip
found 5 days ago
Select United flight, departing Mon, Oct 6 from Boston to Koh Samui, returning Mon, Oct 13, priced at $1,032 found 5 days ago
Turkish Airlines
Sat, Oct 18 - Wed, Nov 5
BOS
Boston
USM
Koh Samui
$1,215 Roundtrip, just found
$1,215
Roundtrip
just found
Select Turkish Airlines flight, departing Sat, Oct 18 from Boston to Koh Samui, returning Wed, Nov 5, priced at $1,215 just found
Qatar Airways
Wed, Nov 5 - Fri, Nov 14
BOS
Boston
USM
Koh Samui
$1,239 Roundtrip, found 8 hours ago
$1,239
Roundtrip
found 8 hours ago
Select Qatar Airways flight, departing Wed, Nov 5 from Boston to Koh Samui, returning Fri, Nov 14, priced at $1,239 found 8 hours ago

Alternative airports near Koh Samui

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Samui Intl. Airport USM. Cheapest and Closest option available. Average driving time to city center is 31 minutes. Flights from $1,122
USM
Samui Intl. Airport
CheapestClosest
Average driving time to city center31 min
Flights from $1,122

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Ko Samui Airport (USM) cost?
Grab a cheap one-way flight from $516 or cheap return flight from $996 from Logan Intl. Airport (BOS) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Ko Samui Airport (USM)?
Traveling in October can help you save, as it's the cheapest month for flights between BOS and USM. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Ko Samui Airport (USM)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BOS to USM flight.
How many flights per day from Logan Intl. Airport (BOS) to Ko Samui Airport (USM)?
You'll need to book a flight with a layover if you're traveling from Logan Intl. Airport (BOS) to Ko Samui Airport (USM). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from BOS to USM?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Ko Samui Airport (USM)?
To avoid possible delays on the Logan Intl. Airport (BOS) to Ko Samui Airport (USM) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Ko Samui Airport (USM) last-minute?
Waiting until just before your departure to book a flight from BOS to USM often results in higher prices. While it's possible to find some last-minute offers, there's no guarantee. Be flexible with your itinerary for a better chance of landing a bargain.
Is it cheaper to book a BOS to USM flight and hotel package?
You'll generally save money by securing a BOS to USM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your preferred accommodations and flights, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Ko Samui Airport (USM)?
Typically, you can reschedule or cancel your BOS to USM flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like further details, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Logan Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Air France, British Airways, Cathay Pacific, Etihad Airways, Japan Airlines, KLM, Lufthansa, Qatar Airways, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$995
Distance
8805 mi

Book with confidence

Book with confidence

Boston to Samui Intl. Airport Flights

The cheapest times to fly from Boston to Samui Intl. Airport

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Samui Intl. Airport are during the month of October. You can find some of the cheapest flights from Boston to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Samui Intl. Airport

Sunday is one of the best days to book for cheap flights from Boston to Samui Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Samui Intl. Airport

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $516 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Samui Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Samui Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Boston to Samui Intl. Airport Flights
*Available to One Key members.