$143 Find Cheap Flights from Boston to Saint Martin Island - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Saint Martin Island departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Book Cheap Boston to Saint Martin Island Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Saint Martin Island that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Saint Martin Island

Sat, Aug 29 - Sat, Sep 5
American Airlines Logo
8:50 pm - 1:22 pm
BOS
-
SXM
16h 32m
2 stops
American Airlines Logo
2:22 pm - 11:26 pm
SXM
-
BOS
9h 04m
1 stop
$374American Airlines
Sat, Aug 29 - Sat, Sep 5
American Airlines Logo
8:50 pm - 1:22 pm
BOS
-
SXM
16h 32m
2 stops
American Airlines Logo
4:39 pm - 8:45 am
SXM
-
BOS
16h 06m
2 stops
$374American Airlines
Mon, Sep 21 - Fri, Sep 25
Delta Logo
5:30 am - 1:53 pm
BOS
-
SXM
8h 23m
1 stop
Delta Logo
3:18 pm - 1:17 am
SXM
-
BOS
9h 59m
1 stop
$379Delta
Mon, Sep 28 - Fri, Oct 2
Delta Logo
5:30 am - 1:53 pm
BOS
-
SXM
8h 23m
1 stop
Delta Logo
3:18 pm - 1:17 am
SXM
-
BOS
9h 59m
1 stop
$379Delta
Sun, Nov 1 - Thu, Nov 5
Southwest Logo
9:00 pm - 3:40 pm
BOS
-
SXM
17h 40m
2 stops
Southwest Logo
3:20 pm - 8:05 am
SXM
-
BOS
17h 45m
2 stops
$384Southwest
Sun, Nov 1 - Thu, Nov 5
Southwest Logo
9:00 pm - 3:40 pm
BOS
-
SXM
17h 40m
2 stops
Southwest Logo
4:40 pm - 11:50 pm
SXM
-
BOS
8h 10m
1 stop
$384Southwest
Sat, Oct 3 - Sat, Oct 10
United Airlines Logo
6:00 am - 12:33 pm
BOS
-
SXM
6h 33m
1 stop
United Airlines Logo
1:35 pm - 10:45 pm
SXM
-
BOS
9h 10m
1 stop
$389United Airlines
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
6:00 am - 12:33 pm
BOS
-
SXM
6h 33m
1 stop
United Airlines Logo
1:35 pm - 11:01 am
SXM
-
BOS
21h 26m
2 stops
$392United Airlines
Mon, Aug 24 - Thu, Aug 27
JetBlue Logo
5:10 am - 12:37 pm
BOS
-
SXM
7h 27m
1 stop
JetBlue Logo
1:42 pm - 12:32 am
SXM
-
BOS
10h 50m
1 stop
$404JetBlue
Sat, Sep 19 - Sat, Sep 26
JetBlue Logo
6:19 am - 2:00 pm
BOS
-
SXM
7h 41m
1 stop
JetBlue Logo
3:05 pm - 11:39 pm
SXM
-
BOS
8h 34m
1 stop
$404JetBlue
Booking Insights

KAYAK's insights & trends for Boston to Saint Martin Island flights

Get data-powered insights and trends into flights from Boston to Saint Martin Island to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Boston to Saint Martin Island flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Saint Martin Island from Boston found in the last 5 days was to Simpson Bay, at $484 round-trip. The most popular route is from Boston (BOS) to Simpson Bay (SXM), and the cheapest round-trip airline ticket found on this route in the last 5 days was $484.

What is the cheapest time of day to fly to Saint Martin Island?

The average price for all round-trip flights from Boston to Saint Martin Island depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Saint Martin Island is generally in the morning, when round-trip flights cost $517 on average. The most expensive time of day to fly to Saint Martin Island is generally in the morning, which is peak travel time and where the average cost of a ticket is $517.

Can I save money by flying with a layover from Boston to Saint Martin Island?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $516, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Boston to Saint Martin Island?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Saint Martin Island, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Saint Martin Island is September, when tickets cost $409 (return) on average. On the other hand, the most expensive months are April and August, when the average cost of round-trip tickets is $639 and $609 respectively.

What’s the cheapest day of the week to fly from Boston to Saint Martin Island?

The average price of all round-trip flights from Boston to Saint Martin Island clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Saint Martin Island on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Boston to Saint Martin Island. For your return ticket, we recommend flying on a Sunday and avoiding Saturdays for the best deals.

How far in advance should I book a flight from Boston to Saint Martin Island?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Saint Martin Island, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Saint Martin Island, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

September

Cheapest flight

$143
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Boston to Simpson Bay

FAQs - booking Saint Martin Island flights

  • How does KAYAK find such low prices on flights from Boston to Saint Martin Island?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Saint Martin Island.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Saint Martin Island?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Saint Martin Island is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Saint Martin Island?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boston to Saint Martin Island with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Saint Martin Island?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boston to Saint Martin Island up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many flights are there between Boston and Saint Martin Island per day?

    There is a maximum of 1 nonstop flight a day that takes off from Boston and lands in Saint Martin Island, with an average flight time of 4h 13m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 1 flights.

Reviews of the top 5 airlines serving from Boston to Saint Martin Island

 
See real verified KAYAK customer reviews for airlines flying from Boston to Saint Martin Island. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Saint Martin Island? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8493 reviews
8.1Boarding
7.2Food
7.8Comfort
8.5Crew
7.8Entertainment
Airline reviews

Flight from Savannah arrived very late and we did not take off till 2 hours after scheduled departure!

2.0 MediocreBruce, Jul 2026
BOS - LGA
Read more Delta reviews

Flight from Savannah arrived very late and we did not take off till 2 hours after scheduled departure!

Very good seat and service. No complaints about the food. Take off delayed due to airport traffic

It is usually very pleasant. Good service for the price, international flights are even better

Flight attendant was very poor in taking care or showing attention. I slept up front for a few and missed the snacks. She saw me many times, went by me many times and never once asked if I needed anything. The whole 2 hours flight. And this is to a Diamond member in first.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

It was Swiss. Our kosher meals were literally frozen solid and therefore inedible, and the crew didnt care.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

The flight was delayed, they didn’t even have water for the toilets or for drinks

It’s always a great time flying with united airlines.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

They have overselled the ticket and kicked me out from boarding, All my Plans were collapsed and important network meeting missed.also I booked direct flight i have to go through an 1 stop and it was frustrated.

Horrific. We were delayed due a flight attendant stuck in traffic en route to the airport. Over 100 people were then stuck in Charolette. Then I ran to make my layover only to find that my connection didn’t have a plane anymore. Waited 2.5 hours without any updates. On the flight we had to beg for even a pretzel option.

Because I bought my ticket from Underpricer, I could not check in online. I could only check in at the airport and that was deeply frustrating because I had to arrive very early. The flight also departed 45 min late and passengers were given no explanations about why we were delayed. I was worried I would miss my connecting flight. Once on board, however, the flight was fine.

Terrible boarding and first class experience. Nice staff but overall disorganized, dirty plane.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

Great experience. Good dinner and service. FA's were very nice and attentive.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

I had a good experience. I liked being informed about the status of my luggage

The staff could have been friendlier. And Having the flight on time would have been much more convenient.

Old, noisy plane, bad coffee, delayed. Flight attendant was very nice.

We boarded 1.5 hours late. Long wait for the bags when we got to Mexico City. Long wait to get on plane with people mover truck. Friendly staff. They answered all questions as best the could. Such a long, long walk from the plane to customs. Thank you, Michael A. Burris Cambridge, Massachusetts USA

I was forced to check my carry-on bag, which I don't appreciate.

Terrible. Air Canada decided to wait for another flight. Due to the waiting, the weather got worse and connedting flight got cancelled. Air Canada said it was all due to the weather and didn’t pay me for the hotel. Not speaking of 3 hours waiting for my luggage. Never again!

Hard to criticize after the Crowd Strike dilemma. However, when Air Canada says they were "not affected," I expect that is true. My flight delays caused me to miss transportation connections. I understand these things happen, but I don't have to "like it."

Flight delayed 4 times on a non-stop from BOS to SFO. Then when landed in SFO had to wait for 30 mins for a gate AT 3:30AM.

Horrible - for the first time in my life i was denied boarding an international flight because the name used on my ticket - Josh - was not exactly the same as my passport - Joshua. At no time during ticketing, online check-in, or at the airport flying from Boston to NY was i notified of a problem. It was only at boarding from NY to Costa Rica I was informed of the problem and by then it was too late. After missing the flight I was told by airport Jet Blue staff, including a supervisor, that it was my problem and they could not assist because i bought "the cheapest fare". i was hung up on twice by JetBlue customer service, including once by a supervisor. I blame Kayak and your awful partner ChatDeal for even allowing me to purchase an international ticket without verifying this - you effectively sold me a ticket i could not use. Shame on you and shame on ChatDeal for doing nothing to help me resolve the situation. What a scam.

The flight kept getting delayed, but the ground crew did not communicate well to the passengers in the terminal. First, we were told that it was an engine issue. That was understandable. We asked, after the third delay, if it would be canceled; they reassured us that that would not happen because a new plane was on its way from Washington DC. Four hours later, that is exactly what happened. No announcement was made only people who had the JetBlue app learned of the cancellation. They rebooked us on a flight that would get into our destination 36 hours after our original time I had to spend an exorbitant amount of money to book an additional flight with a different airline, the following morning in order to make it to my conference in time. Not to mention the fact that by the time I discovered the cancellation on the departures board, it was too late for me to receive a refund on my lodging in the destination city for that night. Because I had booked with KAYAK, I did not receive any JetBlue email with rebooking information. This is what the information information desk kept telling everyone who inquired about a rebooking. This was my first time flying with JetBlue. Needless to say, after extremely poor communication andover $1000 of additional expense later, I will not be flying with them again.

We were several hours delayed due to confusion during boarding. Evidently the crew could not match the manifest with the boarded customers. After significant time trying to find individuals on board, a crew member walked through the entire plane re-scanning each of our boarding passes. Then we had to wait for a new slot to depart, and when we landed, our gate was not ready. It was a complete goat rodeo from start to finish.

Horrible. Flight was cancelled, jet blue app not working to rebook, no phone number available to call Jet Blue, 400 ish people in line for the help desk, stuck in Boston for 2 more days had to book new flight with a different airline and still not sure if I will be able to get any refund.

Flight was delayed many times. The crew was friendly but you eleven had to buy headphones to access the movies in the plane. $8 is not a lot for one person but it is when you travel with all your family.

The food took two hours to be delivered to my seat, when I'm on an overnight flight I want to sleep asap after take off

Flight left 2 hours late with no explanation as to the delay

I like everything. Blythe at DCA is the absolute best!

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

Everything you need to know for your flight to Saint Martin Island

Information on your arrival and departure airports