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Saint Lucia

$120+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 2/229:33 pm
BOS
-
UVF
2 stops17h 25m
American Airlines
Thu 2/263:48 pm
UVF
-
BOS
2 stops19h 22m
American Airlines
Deal found 1/28$297
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 2/258:30 pm
BOS
-
UVF
2 stops17h 48m
American Airlines
Wed 3/44:58 pm
UVF
-
BOS
1 stop18h 03m
American Airlines
Deal found 1/27$322
This American Airlines deal was found by Cheapflights users on 1/29. 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 3/48:30 pm
BOS
-
UVF
2 stops18h 28m
American Airlines
Wed 3/112:48 pm
UVF
-
BOS
2 stops19h 22m
American Airlines
Deal found 1/29$324
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 3/58:30 pm
BOS
-
UVF
2 stops18h 28m
American Airlines
Mon 3/93:58 pm
UVF
-
BOS
2 stops18h 59m
American Airlines
Deal found 1/27$347
This American Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 2/256:25 pm
BOS
-
UVF
1 stop20h 33m
American Airlines
Mon 3/24:58 pm
UVF
-
BOS
2 stops18h 59m
American Airlines
Deal found 1/28$355
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 3/105:00 am
BOS
-
UVF
1 stop9h 58m
American Airlines
Wed 3/253:58 pm
UVF
-
BOS
1 stop9h 01m
American Airlines
Deal found 1/27$375
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 5/126:27 pm
BOS
-
UVF
1 stop19h 08m
American Airlines
Tue 5/193:21 pm
UVF
-
BOS
2 stops18h 59m
American Airlines
Deal found 1/27$380
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/86:35 pm
BOS
-
UVF
1 stop19h 30m
Delta
Fri 2/134:25 pm
UVF
-
BOS
1 stop9h 44m
Delta
Deal found 1/28$381
This Mytrip deal was found by Cheapflights users on 1/26. 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 2/265:27 am
BOS
-
SLU
2 stops32h 48m
Multiple Airlines
Mon 3/27:10 pm
SLU
-
BOS
2 stops29h 49m
Multiple Airlines
Deal found 1/26$766
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/286:15 am
BOS
-
SLU
3 stops35h 45m
Multiple Airlines
Wed 2/410:15 am
SLU
-
BOS
3 stops29h 23m
Multiple Airlines
Deal found 1/27$840
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/225:40 am
BOS
-
SLU
2 stops33h 55m
Multiple Airlines
Sat 3/285:50 pm
SLU
-
BOS
2 stops30h 09m
Multiple Airlines
Deal found 1/28$953
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/286:00 am
BOS
-
SLU
2 stops16h 10m
Multiple Airlines
Tue 3/317:10 pm
SLU
-
BOS
3 stops22h 23m
Multiple Airlines
Deal found 1/27$1,008

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(American Airlines)

One-way from

$120
(American Airlines)

Popular in

April

Cheapest in

August

Average price

$562

Good round-trip deal

$523 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.
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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

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 29, 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

Sun 2/22

9:33 pm-3:58 pm

2 stops17h 25m

Castries Hewanorra

Thu 2/26

3:48 pm-10:10 am

2 stops19h 22m

$297

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 2/25

8:30 pm-3:18 pm

2 stops17h 48m

Castries Hewanorra

Wed 3/4

4:58 pm-11:36 am

2 stops19h 38m

$322

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 2/25

6:25 pm-3:58 pm

1 stop20h 33m

Castries Hewanorra

Mon 3/2

4:58 pm-10:57 am

2 stops18h 59m

$355

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 2/8

6:35 pm-3:05 pm

1 stop19h 30m

Castries Hewanorra

Fri 2/13

4:25 pm-1:09 am

1 stop9h 44m

$381

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 2/8

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Sat 2/14

4:25 pm-1:09 am

1 stop9h 44m

$402

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 4/23

7:18 pm-2:23 pm

2 stops19h 05m

Castries Hewanorra

Tue 4/28

3:21 pm-10:15 am

2 stops18h 54m

$405

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 4/1

6:15 am-3:20 pm

1 stop9h 05m

Castries Hewanorra

Wed 4/8

4:20 pm-2:52 pm

2 stops22h 32m

$423

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 3/29

6:40 pm-3:25 pm

2 stops20h 45m

Castries Hewanorra

Thu 4/2

4:15 pm-2:52 pm

2 stops22h 37m

$426

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 3/28

11:15 am-4:01 pm

Nonstop4h 46m

Castries Hewanorra

Tue 3/31

6:52 pm-11:19 am

1 stop16h 27m

$448

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 3/28

10:15 am-3:20 pm

2 stops29h 05m

Castries Hewanorra

Tue 3/31

6:52 pm-7:41 am

1 stop12h 49m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 39 results
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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 29, 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 29, 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
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
8,127 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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.
United Airlines
7.4
Good
9,215 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
11,206 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
2,891 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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.
Air Canada
7.1
Good
10,667 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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 17h 25m. The distance from Boston to Saint Lucia is about 2066 mi. This flight may include one or multiple stops.

  • 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 $440, our data indicates the cheapest price to be $193. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $384.

  • 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

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Alternative routes for Boston to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.
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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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$188Average$597FlexibilityNo cancel feeOn-time69%
DeltaCheapest$248Average$706FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$292Average$644FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$370Average$531FlexibilityNo cancel feeOn-time67%
JetBlueCheapest$382Average$643FlexibilityNo cancel feeOn-time62%

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