$120 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 1/19. 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

Mon, Jan 26 - Fri, Jan 30
American Airlines Logo
5:15 am - 4:02 pm
BOS
-
UVF
9h 47m1 stop
American Airlines Logo
4:06 pm - 11:51 pm
UVF
-
BOS
8h 45m1 stop
$292American Airlines
Mon, Jan 26 - Fri, Jan 30
American Airlines Logo
5:15 am - 4:02 pm
BOS
-
UVF
9h 47m1 stop
American Airlines Logo
4:06 pm - 11:21 am
UVF
-
BOS
20h 15m2 stops
$297American Airlines
Tue, Jan 27 - Tue, Feb 3
American Airlines Logo
9:45 am - 3:03 pm
BOS
-
UVF
28h 18m1 stop
American Airlines Logo
5:02 pm - 12:59 am
UVF
-
BOS
8h 57m1 stop
$299American Airlines
Sat, Feb 28 - Thu, Mar 5
American Airlines Logo
6:25 pm - 3:58 pm
BOS
-
UVF
20h 33m1 stop
American Airlines Logo
4:58 pm - 10:01 am
UVF
-
BOS
18h 03m1 stop
$300American Airlines
Sun, Jan 25 - Fri, Jan 30
American Airlines Logo
6:17 pm - 1:46 pm
BOS
-
UVF
18h 29m1 stop
American Airlines Logo
5:02 pm - 10:00 am
UVF
-
BOS
17h 58m1 stop
$316American Airlines
Wed, Jan 28 - Wed, Feb 4
American Airlines Logo
6:17 pm - 1:46 pm
BOS
-
UVF
18h 29m1 stop
American Airlines Logo
5:02 pm - 12:59 am
UVF
-
BOS
8h 57m1 stop
$317American Airlines
Sun, Jan 25 - Fri, Jan 30
American Airlines Logo
7:35 pm - 3:03 pm
BOS
-
UVF
18h 28m2 stops
American Airlines Logo
5:02 pm - 12:59 am
UVF
-
BOS
8h 57m1 stop
$321American Airlines
Wed, Jan 28 - Wed, Feb 4
American Airlines Logo
6:17 pm - 1:46 pm
BOS
-
UVF
18h 29m1 stop
American Airlines Logo
5:02 pm - 9:29 am
UVF
-
BOS
17h 27m2 stops
$322American Airlines
Fri, Jan 16 - Mon, Jan 19
Multiple Airlines Logo
1:00 pm - 1:10 pm
BOS
-
SLU
23h 10m2 stops
Multiple Airlines Logo
9:10 am - 9:32 am
SLU
-
BOS
25h 22m2 stops
$978Multiple Airlines
Fri, Jan 16 - Mon, Jan 19
Multiple Airlines Logo
1:00 pm - 1:10 pm
BOS
-
SLU
23h 10m2 stops
Multiple Airlines Logo
4:20 pm - 5:44 pm
SLU
-
BOS
26h 24m3 stops
$1,005Multiple Airlines
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 $562 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 $562.

Good to know

Low seasonAugust
Cheapest flight$120
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 11% 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 5 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 8017 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
Airline reviews

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

2.0 MediocreAnonymous, Jan 2026
EWR - ATL
Read more Delta reviews

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

A 12 hour flight during the day with one real meal service - are you kidding? Also the breakfast was one of the worst and not what was listed

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

Aircraft was noisy, old and never dimmed the lights on a night flight even on business class! I flew 17 times on United and probably another 40 on other airlines United USA /Europe flights were the worst to include luggage delayed once going to europe and once coming back

Check how old the airframe is, some older ones have inoperable seat back entertainment or power.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

The economy seats are very cramped and the food was bizarre. However, I did like the greek yogurt option for breakfast.

While I didn’t watch much tv I would have liked a few more options of TV series from Apple TV or hbo max ..

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Nothing to write home about, average flight experience. Seats were spacious enough, crew friendly enough. Loved the AA entertainment/wifi service.

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

They should have allowed for extra time to de-ice the plane before boarding passengers. This delayed us about 10-15 mins after we boarded. Overall experience was fine. Crew was friendly and on top of everything. We didn’t have any issues during the flight.

Experience was good. We were delayed in leaving by 15 mins because the flight was waiting on a family that was late in getting to the gate. Food and drink options were as expected. I highly recommend checking in ahead of time using the airline’s app so that it’s quicker to get your luggage tags as soon as you arrive at the terminal. No more waiting in long lines!

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

We never made it due to delays on both ends. Gate attendant said it was mechanical but the system said otherwise, so no compensation. That’s not right.

Our flight from Eagle to Vail was delayed to the point we missed our connection to Savannah. Now we’re a family of 4 in a hotel room with luggage, no toiletries, no clean clothes. Gate attendant said the delay was mechanical but it was put in the system as something else so no compensation. That’s just wrong.

Flight was fine, price was good but food onboard was abysmal. I was on there for breakfast and lunch and dinner 845am EST to 845pm GMT and all I got was a yoghurt parfait, fruit and a piece of cake. Later snacks included an ice-cream brownie and a pizza twist. I was hungry by the time I landed and the airport amenities were closed. Not happy.

1) No pilot available for 1 hour 2) no room for most passengers careyon in overhead—-> stowed below 3) when we landed we had to wait 45 min. Before docking at gate as gate was not ready

Good. No issues except a slight delay. Crew came in late.

Not a pleasant experience, service was poor. Didn't like it

It was good. I prefer JB over other airlines.I just wish we had headphones for the films, but other than that - good.

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

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

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

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

Information on your arrival and departure airports