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Saint Lucia

$90+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Mar 30 — Apr 61
Mon 3/30
Mon 4/6
1 adult, Economy
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Cheap 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 February 28, 2026.

This Expedia deal was found by Cheapflights users on 2/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:45 am
BOS
-
UVF
Nonstop4h 47m
JetBlue
Sat 4/184:15 pm
UVF
-
BOS
Nonstop5h 05m
JetBlue
Deal found 2/27$211
This Delta deal was found by Cheapflights users on 2/27. 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 8/285:45 am
BOS
-
UVF
1 stop8h 23m
Delta
Tue 9/13:28 pm
UVF
-
BOS
1 stop9h 38m
Delta
Deal found 2/27$280
This American Airlines deal was found by Cheapflights users on 2/25. 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.
Tue 11/107:19 pm
BOS
-
UVF
2 stops18h 41m
American Airlines
Tue 11/174:50 pm
UVF
-
BOS
2 stops18h 22m
American Airlines
Deal found 2/25$285
This American Airlines deal was found by Cheapflights users on 2/27. 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 8/283:07 pm
BOS
-
UVF
1 stop22h 02m
American Airlines
Tue 9/13:09 pm
UVF
-
BOS
2 stops18h 56m
American Airlines
Deal found 2/27$291
This American Airlines deal was found by Cheapflights users on 2/25. 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 3/45:00 am
BOS
-
UVF
1 stop9h 58m
American Airlines
Thu 5/72:45 pm
UVF
-
BOS
2 stops19h 16m
American Airlines
Deal found 2/25$301
This Delta deal was found by Cheapflights users on 2/24. 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.
Wed 3/45:35 am
BOS
-
UVF
1 stop8h 30m
Delta
Wed 3/113:18 pm
UVF
-
BOS
1 stop9h 55m
Delta
Deal found 2/24$303
This American Airlines deal was found by Cheapflights users on 2/25. 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 3/45:00 am
BOS
-
UVF
1 stop9h 58m
American Airlines
Sat 3/72:07 pm
UVF
-
BOS
1 stop17h 40m
American Airlines
Deal found 2/25$312
This American Airlines deal was found by Cheapflights users on 2/28. 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.
Tue 3/35:00 am
BOS
-
UVF
1 stop9h 58m
American Airlines
Tue 3/173:58 pm
UVF
-
BOS
1 stop18h 03m
American Airlines
Deal found 2/28$313
This American Airlines deal was found by Cheapflights users on 2/25. 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 2/285:39 am
BOS
-
UVF
1 stop8h 39m
American Airlines
Sat 3/72:07 pm
UVF
-
BOS
1 stop17h 40m
American Airlines
Deal found 2/25$322
This Mytrip deal was found by Cheapflights users on 2/24. 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 3/265:30 am
BOS
-
SLU
2 stops13h 30m
Multiple Airlines
Thu 4/27:20 pm
SLU
-
BOS
2 stops20h 36m
Multiple Airlines
Deal found 2/24$774
This Mytrip deal was found by Cheapflights users on 2/24. 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.
Mon 6/15:10 am
BOS
-
SLU
2 stops13h 15m
Multiple Airlines
Mon 6/87:10 pm
SLU
-
BOS
2 stops16h 36m
Multiple Airlines
Deal found 2/24$785
This Mytrip deal was found by Cheapflights users on 2/26. 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 3/55:30 am
BOS
-
SLU
2 stops12h 30m
Multiple Airlines
Sun 3/86:45 pm
SLU
-
BOS
2 stops27h 52m
Multiple Airlines
Deal found 2/26$797

Find 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 February 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$211
(Expedia)

One-way from

$90
(Delta)

Popular in

April

Cheapest in

August

Average price

$622

Good round-trip deal

$578 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. 8% potential increase in price ($62 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 February 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Saint Lucia.
Search Deals

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 February 28, 2026.
Use the filters below to find and compare flights from Boston to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 4/26

6:15 am-3:10 pm

1 stop8h 55m

Castries Hewanorra

Thu 4/30

4:15 pm-2:47 pm

2 stops22h 32m

$458

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 3/10

5:35 am-1:58 pm

1 stop8h 23m

Castries Hewanorra

Wed 3/25

3:18 pm-1:13 am

1 stop9h 55m

$509

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 3/24

5:10 am-2:18 pm

1 stop9h 08m

Castries Hewanorra

Wed 3/25

3:49 pm-11:50 pm

1 stop8h 01m

$516

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 4/4

8:45 am-1:32 pm

Nonstop4h 47m

Castries Hewanorra

Sat 4/11

2:55 pm-7:54 pm

Nonstop4h 59m

$529

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 4/11

10:45 am-3:10 pm

1 stop28h 25m

Castries Hewanorra

Fri 4/17

3:57 pm-11:59 pm

1 stop8h 02m

$638

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 3/19

6:25 pm-2:58 pm

1 stop20h 33m

Castries Hewanorra

Mon 3/23

3:18 pm-10:57 am

1 stop19h 39m

$657

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 7/8

6:00 am-2:10 pm

1 stop8h 10m

Castries Hewanorra

Tue 7/14

2:58 pm-12:59 am

1 stop10h 01m

$738

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 4/30

5:20 am-2:27 pm

1 stop9h 07m

Castries Hewanorra

Fri 5/8

3:57 pm-11:59 pm

1 stop8h 02m

$738

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Thu 3/26

5:30 am-7:00 pm

2 stops13h 30m

Castries George F. L. Charle

Thu 4/2

7:20 pm-3:56 pm

2 stops20h 36m

$774

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Sat 3/28

7:55 pm-7:00 pm

2 stops23h 05m

Castries George F. L. Charle

Thu 4/2

7:20 pm-10:39 pm

2 stops27h 19m

$798

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

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 $539). 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 February 28, 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 February 28, 2026.
Get a feel of what it's like to fly with Delta, American Airlines, and JetBlue 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
8,245 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
8,245 reviews
Delta
7.9
Good
8,245 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
11,367 reviews
Delta
7.9
Good
8,245 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
2,895 reviews
Delta
7.9
Good
8,245 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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 4h 47m. 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?

    $153 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Air Canada and American Airlines, with prices starting from $161 and $163, 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 $531, our data indicates the cheapest price to be $186. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $430.

  • 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 $539). 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

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Top 3 airlines flying from Boston to Saint Lucia

Discover the top 3 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 February 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$768FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$292Average$680FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$382Average$666FlexibilityNo cancel feeOn-time62%

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