$95 Find Cheap Flights from Boston to Saint Lucia

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 Lucia departing on 9/5. 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

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Flight Deals

Book Cheap Boston to Saint Lucia 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 Lucia 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 Lucia

Wed, Sep 2 - Wed, Sep 9
Delta Logo
5:45 am - 2:08 pm
BOS
-
UVF
8h 23m
1 stop
Delta Logo
3:28 pm - 1:06 am
UVF
-
BOS
9h 38m
1 stop
$290Delta
Mon, Apr 27 - Thu, Apr 30
American Airlines Logo
8:30 pm - 2:13 pm
BOS
-
UVF
17h 43m
2 stops
American Airlines Logo
3:28 pm - 10:01 am
UVF
-
BOS
18h 33m
1 stop
$295American Airlines
Mon, Mar 23 - Mon, Mar 30
American Airlines Logo
6:25 pm - 1:48 pm
BOS
-
UVF
19h 23m
1 stop
American Airlines Logo
3:58 pm - 10:57 am
UVF
-
BOS
18h 59m
2 stops
$302American Airlines
Wed, May 20 - Sat, May 23
American Airlines Logo
5:40 pm - 12:02 pm
BOS
-
UVF
18h 22m
2 stops
American Airlines Logo
1:02 pm - 7:39 am
UVF
-
BOS
18h 37m
2 stops
$320American Airlines
Wed, May 20 - Sat, May 23
American Airlines Logo
12:44 pm - 12:02 pm
BOS
-
UVF
23h 18m
1 stop
American Airlines Logo
1:02 pm - 7:39 am
UVF
-
BOS
18h 37m
2 stops
$327American Airlines
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
6:00 am - 1:31 pm
BOS
-
UVF
7h 31m
1 stop
United Airlines Logo
2:35 pm - 11:07 am
UVF
-
BOS
20h 32m
2 stops
$334United Airlines
Fri, Jun 19 - Tue, Jun 23
Air Canada Logo
5:10 am - 2:20 pm
BOS
-
UVF
9h 10m
1 stop
Air Canada Logo
3:05 pm - 11:52 am
UVF
-
BOS
20h 47m
1 stop
$382Air Canada
Fri, Jun 19 - Tue, Jun 23
Air Canada Logo
5:10 am - 2:20 pm
BOS
-
UVF
9h 10m
1 stop
Air Canada Logo
3:05 pm - 9:50 am
UVF
-
BOS
18h 45m
2 stops
$386Air Canada
Mon, May 25 - Tue, Jun 2
Air Canada Logo
5:00 pm - 2:05 pm
BOS
-
UVF
21h 05m
1 stop
Air Canada Logo
3:05 pm - 11:46 am
UVF
-
BOS
20h 41m
1 stop
$388Air Canada
Mon, May 25 - Tue, Jun 2
Air Canada Logo
6:55 pm - 2:05 pm
BOS
-
UVF
19h 10m
1 stop
Air Canada Logo
3:05 pm - 2:47 pm
UVF
-
BOS
23h 42m
2 stops
$392Air Canada
Booking Insights

KAYAK's insights & trends for Boston to Saint Lucia flights

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

What is the cheapest Boston to Saint Lucia flight route?

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

The cheapest ticket to Saint Lucia from Boston found in the last 72 hours was to Castries, at $578 round-trip. The most popular route is from Boston (BOS) to Castries (UVF), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $578.

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

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $627 on average.

What is the cheapest month to fly from Boston to Saint Lucia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Saint Lucia, 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 Lucia is August, when tickets cost $382 (return) on average. On the other hand, the most expensive months are April and July, when the average cost of round-trip tickets is $995 and $986 respectively.

Good to know

Low seasonSeptember
Cheapest flight$95
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Boston to Castries

FAQs - booking Saint Lucia flights

  • I’m headed to the northern part of Saint Lucia. What airport should I fly to?

    If you’re flying from Boston to the island of Saint Lucia to visit the northern region, then consider looking for flights to George FL Charles Airport (SLU), just outside the capital city of Castries. Air Canada and Caribbean Airlines join together to offer a two-stop layover that goes to Toronto Pearson International Airport (YYZ) and Port of Spain Piarco International Airport (POS).

  • What airport should I fly to when visiting the southern part of Saint Lucia?

    Passengers looking to explore the southern region of Saint Lucia should consider booking a flight from Boston Logan International Airport to Hewanorra International Airport (UVF) located near the town of Vieux Fort. JetBlue offers nonstop flight service, while United Airlines provides a one-stop layover that goes to O'Hare International Airport (ORD), and Air Canada’s one-stop layover goes to Toronto Pearson International Airport.

  • How eco-friendly is it to fly from Boston to Saint Lucia?

    The eco-friendliness of flights from Boston to Saint Lucia varies depending on the airline and flight route. However, American Airlines, United Airlines, and JetBlue are all committed to sustainable policies. These include the use of sustainable aviation fuel (SAF) in their aircraft fleets, alongside a commitment to achieving net-zero carbon emissions by 2040 for JetBlue and 2050 for United and American.

  • How many bags can I bring on my flight from Boston to Saint Lucia?

    Carry-on and checked-bag allowances on flights from Boston to Saint Lucia vary depending on ticket class and airline. However, JetBlue, United Airlines, and American Airlines all permit economy passengers to bring a bag that fits under the seat and a personal item as carry-on luggage. For checked baggage, they allow the purchase of up to two bags weighing no more than 50 lbs. each.

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

    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 Lucia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Saint Lucia 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 Lucia?

    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 Lucia 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 Lucia?

    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 Lucia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Saint Lucia

  • Passengers who are U.S. citizens traveling from Boston to the island of Saint Lucia don’t need to apply for a visa beforehand. Instead, with a valid U.S. passport with one blank page, they’re granted visa-free access for up to 90 days.
  • To ease the burden of travel for passengers with reduced mobility, Boston Logan International Airport (BOS) features a wide array of accessible services including parking spaces, restrooms, and elevators. In addition, they have wheelchairs available upon request and pet relief areas in terminals B, C, and E after security.
  • Need to unwind a bit before your flight to Saint Lucia departs? If so, Boston Logan International Airport features lounges such as the American Airlines Admirals Club near Gate B4, the United Club near Gate B24, as well as The Club and The Lounge near Gate C19.
  • Delta Air Lines considers Boston Logan International Airport a primary hub, and JetBlue considers it a focus city, so both airlines provide regular nonstop and layover flights to Saint Lucia.
  • If you’re looking for cheaper flights and don’t mind long layovers, then look for flights from Boston to Saint Lucia that have two or more stops. American Airlines provides an affordable, two-stop layover that goes to Ronald Reagan Washington National Airport (DCA) and Miami International Airport (MIA).

Reviews of the top 3 airlines serving from Boston to Saint Lucia

 
Need help choosing which airline to fly with from Boston to Saint Lucia? 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.
7.9
DeltaOverall score based on 8276 reviews
7.9Comfort
7.8Entertainment
7.2Food
8.5Crew
8.1Boarding
Airline reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

8.0 ExcellentMary, Mar 2026
LGA - MKE
Read more Delta reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

Good flight. Connector flight was delayed so made a short turnaround in Atlanta which was stressful. Otherwise, great crew, Staff in ATL was very informative about the delay and ensured people their connections were fine. Notified the ones that were not. Great communication.

The flight went very well, but the flight attendants didn't serve and food or drinks other than 1st class due to rough air but to be honest it wasn't that bumpy and I felt that they could've at least offered water and coffee perhaps. Also serving 1st class only is a bad look. I've been in 1st class many times and I would've felt that if the turbulence was too rough for the main cabin, it would be too rough for 1st class too.

They made me check my bag and I didn't need to as there was overhead space available. I paid for a seat towards the front of the plane and it didn't recline. I requested a refund and they declined to give me one.

I have to congratulate Kayak (and Dylan the Chatdeal agent) because because when we decided extended our trip in Florida by two days, there were many direct flights oprions back to Boston available on the Friday we wanted to fly on the JetBlue website, but once I canceled the original JetBlue flight on their website, those direct return options disappeared immediatley! I think it's a game JetBlue plays. . Luckily, I checked Kayak and they had a direct flight that wasn't appearing on JetBlue's website and so I booked it, and we were able to fly home direct through the Kayak booking when JetBlue was offering nothing (even though I have been a True Blue member for 20 years, and also am a Mosaic member). So much for loyalty- their algorithm for booking is like a shell game. JetBlue used to be a good company but now they're worse than anyone. Also I was originally booked this trip to Florida, two months before the departure date, I booked the trip on JetBlue's website and then after the payment part, they said there was a problem and that I needed to do the booking again, so when I immediately went to rebook , the price had gone up 30%! I called them and it sounded like they had heard this so many times before and the guy told me to check back in 10 minutes and the price would be back to where it was when I was booking- it but it never was. How could the price go up 30% in one minute two months before the flight???? They're playing a game with their customers. Anyways, I booked a cheaper flight then at a less convenient time. So fast forward two months the night before the 7 AM flight, they sent me an email at midnight when I was sleeping to let me know that my flight at 7 AM had been canceled. The only thing they offered was a flight that night from from a different airport (Providence) to a different airport in Florida (West Palm Beach) or a flight two days later. No compensation, nothing. They couldn't of tried to get another plane to the Boston airport? They had all night to do it. I passed on their ridiculous options and flew with Delta and it was a great experience. Of course, I had to pay a lot more booking on the same day, but JetBlue doesn't care. I put in a lengthy complaint with the agent who assured me someone would get back to me by email within three days and I haven't heard a thing. JetBlue used to be a good company but now they're among the worst. The only thing they still have is decent legroom, but the corporate bean counters will probably start taking that away too.

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

Both flights were significantly delayed. The flight experience itself was great.

My flight got delayed and eventually canceled, then rescheduled. I and several others had a connection from Boston to Paris and asked several times if we would make it. They assured us we would and then rebooked us mid flight without our consent and closed doors early even though they said they communicated we were a bit delayed. We got stranded in Boston and I opted with being rebooked for a different connection to France since they refused to pay for a Hotel. I've now been in Europe for 5 days and still haven't recieved my bags. There was absolutely no urgency for the fact that I'm in a foreign country with absolutely no change of clothes or any of my medication. Such an overwhelming and frustrating experience.

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

The crew for the flight was A+ top notch. They were friendly and professional and made the flight a very relaxing and enjoable.

Rude crew member. She seemed annoyed at me without me saying a single word. Also loudly admonished me for having my bag next to my seat instead of tucked away before landing. Just telling me to put it away and guiding me without giving me a lecture would have been enough.

No included food for a 5 hour flight and the entertainment was only accessible if you had wired headphones (not provided). Otherwise though, great and smooth flying and customer service.

Crew were fantastic and so catering and wonderful! Full score for the entire crew!

The crew was excellent and overall the flight was good. No complaints.

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

Never had such a lazy first class attendant. Literally spent 60%+ of the flight playing games on her personal phone making up excuses of why she was unavailable.

The flight attendants and the service is getting worse by the day.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Like all of the flights I took to get down to Dallas. They were delayed

Other than nearly three hour delay for maintenance issues, everything went smooth

Plane from partner PSA was filthy. Plastic needs to be thoroughly cleaned. Really disgusting to look at and wonder about cleanliness of parts less visible.

The baggage claim experience was poor. The plane crew and the AA app said that checked baggage in CLT would be at carousel 7 but the sign at Baggage Claim said carousel 1. The carousel 1 sign had the correct flight # listed above the belt. But the luggage never came. I went to an AA baggage claim office after about 1 hour and the clerk directed me to another AA room that was poorly marked, with a closed door and no obvious way to know what to do. Finally someone opened the door and my bag was inside. The clerk was totally unable to explain why.

They are rarely on time! Very hard to plan your travels when flights or connections keep getting delayed.

Everything you need to know for your flight from Boston to Saint Lucia

Information on your arrival and departure airports