HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Saint Lucia

$130+ Cheap flights from Boston (BOS) to Saint Lucia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Feb 15 — Feb 221
Sun 2/15
Sun 2/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Saint Lucia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boston to Saint Lucia

Keep the following information in mind while searching for Boston to Saint Lucia flight deals. Data was last updated January 16, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$312
(American Airlines)

One-way from

$130
(American Airlines)

Popular in

April

Cheapest in

August

Average price

$562

Good round-trip deal

$622 or less

Good one-way deal

$193 or less
Provider with most accurate pricing for Boston Logan Intl-Castries George F. L. Charle flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Castries George F. L. Charle flights.
Search Deals
From Boston Logan Intl to Saint Lucia
Search Deals
One-way flight from Boston Logan Intl to Saint Lucia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Saint Lucia.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Saint Lucia.
Search Deals

Find flight deals from Boston to Saint Lucia

Cheapest flights from Boston to Saint Lucia
Explore the most affordable flight options available from Boston to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2026.

This American Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:00 am
BOS
-
UVF
1 stop9h 58m
American Airlines
Wed 3/253:58 pm
UVF
-
BOS
1 stop18h 03m
American Airlines
Deal found 1/15$312
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/289:33 pm
BOS
-
UVF
2 stops16h 45m
American Airlines
Thu 3/53:48 pm
UVF
-
BOS
1 stop19h 13m
American Airlines
Deal found 1/14$317
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/316:17 pm
BOS
-
UVF
1 stop18h 29m
American Airlines
Wed 2/44:06 pm
UVF
-
BOS
1 stop8h 45m
American Airlines
Deal found 1/14$336
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:25 pm
BOS
-
UVF
1 stop19h 23m
American Airlines
Wed 3/44:58 pm
UVF
-
BOS
1 stop18h 03m
American Airlines
Deal found 1/14$337
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:49 pm
BOS
-
UVF
1 stop20h 12m
American Airlines
Thu 2/264:58 pm
UVF
-
BOS
2 stops18h 07m
American Airlines
Deal found 1/14$348
This American Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/112:45 pm
BOS
-
UVF
1 stop25h 03m
American Airlines
Wed 4/82:35 pm
UVF
-
BOS
2 stops19h 26m
American Airlines
Deal found 1/15$350
This Delta deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/66:35 pm
BOS
-
UVF
1 stop19h 30m
Delta
Tue 2/174:25 pm
UVF
-
BOS
1 stop9h 44m
Delta
Deal found 1/15$355
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/316:17 pm
BOS
-
UVF
1 stop18h 29m
American Airlines
Sat 2/75:02 pm
UVF
-
BOS
1 stop17h 59m
American Airlines
Deal found 1/14$361
This Mytrip deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/225:34 am
BOS
-
SLU
2 stops28h 56m
Multiple Airlines
Thu 1/296:20 pm
SLU
-
BOS
2 stops30h 37m
Multiple Airlines
Deal found 1/15$827
This Mytrip deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:00 pm
BOS
-
SLU
2 stops16h 30m
Multiple Airlines
Sat 7/2512:35 pm
SLU
-
BOS
3 stops26h 06m
Multiple Airlines
Deal found 1/14$1,565
This Gotogate deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:55 pm
BOS
-
SLU
2 stops17h 15m
Multiple Airlines
Sat 2/286:20 pm
SLU
-
BOS
2 stops18h 52m
Multiple Airlines
Deal found 1/14$1,740
This Booking.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:35 pm
BOS
-
SLU
2 stops19h 35m
Multiple Airlines
Sun 3/85:00 am
SLU
-
BOS
2 stops17h 37m
Multiple Airlines
Deal found 1/14$2,767

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Saint Lucia 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, Cheapflights users made 2,558,603 searches. Data last updated January 16, 2026.
Use the filters below to find and compare flights from Boston to Saint Lucia that are best for you.

Fly from

Boston

Fly to

Saint Lucia

Route

Depart

Return

Price

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/31

6:17 pm-1:46 pm

1 stop18h 29m

Castries Hewanorra

Wed 2/4

4:06 pm-11:51 pm

1 stop8h 45m

$360

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 2/2

5:15 am-4:02 pm

1 stop9h 47m

Castries Hewanorra

Mon 2/9

5:02 pm-12:59 am

1 stop8h 57m

$361

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 2/6

7:35 pm-1:46 pm

1 stop17h 11m

Castries Hewanorra

Mon 2/9

5:02 pm-10:29 am

2 stops18h 27m

$367

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 2/3

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Thu 2/12

4:25 pm-1:09 am

1 stop9h 44m

$368

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 2/3

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Sat 2/14

4:25 pm-10:02 am

1 stop18h 37m

$368

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 3/10

5:35 am-1:58 pm

1 stop8h 23m

Castries Hewanorra

Tue 3/17

3:18 pm-10:04 am

1 stop18h 46m

$368

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 2/3

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Wed 2/11

4:25 pm-1:04 am

1 stop9h 39m

$368

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/31

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Thu 2/12

4:25 pm-10:02 am

1 stop18h 37m

$389

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 1/30

6:35 pm-3:05 pm

1 stop19h 30m

Castries Hewanorra

Thu 2/12

4:25 pm-1:09 am

1 stop9h 44m

$389

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 1/28

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Wed 2/4

4:25 pm-1:04 am

1 stop9h 39m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 39 results
1
2
3
4

Best time to book a flight from Boston to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Boston to Saint Lucia?

Currently, May is the cheapest month in which you can book a flight from Boston to Saint Lucia (average of $214). Flying from Boston to Saint Lucia in September is currently the most expensive (average of $541). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to LC?

Find hourly flight availability from Boston to Saint Lucia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 16, 2026.

When flying from Boston to Saint Lucia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Saint Lucia

Get insights into the airlines that provide service to Saint Lucia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Lucia. Reviews last updated January 16, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Boston to Saint Lucia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,055 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,055 reviews
Delta
7.9
Good
8,055 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,164 reviews
Delta
7.9
Good
8,055 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,138 reviews
Delta
7.9
Good
8,055 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
JetBlue
7.2
Good
2,888 reviews
Delta
7.9
Good
8,055 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,625 reviews
Delta
7.9
Good
8,055 reviews

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Boston to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Saint Lucia?

    Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to Saint Lucia. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

  • How long is the flight from Boston to Saint Lucia?

    Departing from Boston to Saint Lucia will take you 8h 30m. The distance from Boston to Saint Lucia is about 2066 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Boston to Saint Lucia one-way?

    $138 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on American Airlines and Air Canada, with prices starting from $143 and $161, respectively.

  • What are the cheapest flights from Boston to Saint Lucia?

    Looking for the cheapest flight from Boston to Saint Lucia? While on average our users pay $557, our data indicates the cheapest price to be $193. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $368.

  • Can I find deals for flights from Boston to Saint Lucia that include hotel bookings?

    Yes. In addition to deals on Boston to Saint Lucia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Saint Lucia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Saint Lucia.

  • Can I find deals for business class flights from Boston to Saint Lucia?

    Yes. Cheapflights offers flight deals from Boston to Saint Lucia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Saint Lucia?

    Currently, May is the cheapest month in which you can book a flight from Boston to Saint Lucia (average of $214). Flying from Boston to Saint Lucia in September is currently the most expensive (average of $541). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Luis Munoz Marin Intl flights
Hartford to Luis Munoz Marin Intl flights
Boston to Oranjestad flights
Boston to Punta Cana flights
Boston to Santo Domingo flights
Boston to Saint Thomas Island flights
Boston to Montego Bay flights
Boston to Simpson Bay flights
Boston to Nassau flights
Boston to Providenciales flights
Boston to Santiago de los Caballeros flights
Boston to George Town flights
Boston to Bridgetown flights
Boston to St. John's flights
Hartford to Oranjestad flights
Boston to Christiansted flights
Albany to Luis Munoz Marin Intl flights
Boston to Willemstad flights
Boston to Puerto Plata flights
Boston to Castries flights
Hartford to Saint Thomas Island flights
Hartford to Punta Cana flights
Hartford to Montego Bay flights
Boston to Kingston flights
Boston to The Valley flights
Boston to Road Town flights
Hartford to Nassau flights
Boston to Aguadilla flights
Boston to Basseterre flights
Boston to Port of Spain flights
Boston to Georgetown flights
Boston to St. George's flights
Albany to Oranjestad flights
Hartford to Simpson Bay flights
Albany to Punta Cana flights
Hartford to Santo Domingo flights
Boston to Marsh Harbour flights
Hartford to Providenciales flights
Boston to Kralendijk flights
Boston to Gregory Town flights
Hartford to George Town flights
Hartford to Kingston flights
Worcester to Luis Munoz Marin Intl flights
Hartford to Willemstad flights
Hartford to Ponce flights
Boston to Freeport flights
Albany to Nassau flights
Albany to Simpson Bay flights
Boston to Roseau flights
Hartford to Christiansted flights

Top 5 airlines flying from Boston to Saint Lucia

Discover the top 5 airlines that operate flights from Boston to Saint Lucia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$188Average$597FlexibilityNo cancel feeOn-time69%
DeltaCheapest$255Average$706FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$292Average$650FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$370Average$531FlexibilityNo cancel feeOn-time67%
JetBlueCheapest$374Average$660FlexibilityNo cancel feeOn-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.