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Saint Lucia

$131+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This JetBlue deal was found by Cheapflights users on 12/18. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:15 amBOS - UVF
Nonstop4h 44mJetBlue
Wed 12/312:20 pmUVF - BOS
Nonstop5h 14mJetBlue
Deal found 12/18$523
This JetBlue deal was found by Cheapflights users on 12/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:40 amBOS - UVF
1 stop8h 17mJetBlue
Sun 12/282:20 pmUVF - BOS
Nonstop5h 14mJetBlue
Deal found 12/16$602
This JetBlue deal was found by Cheapflights users on 12/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:15 amBOS - UVF
Nonstop4h 44mJetBlue
Sun 12/282:20 pmUVF - BOS
Nonstop5h 14mJetBlue
Deal found 12/17$654
This Expedia deal was found by Cheapflights users on 12/17. 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.
Thu 12/187:12 amBOS - UVF
1 stop7h 35mMultiple Airlines
Fri 12/265:15 pmUVF - BOS
1 stop17h 42mMultiple Airlines
Deal found 12/17$674
This Priceline deal was found by Cheapflights users on 12/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:12 amBOS - UVF
1 stop7h 35mJetBlue
Thu 12/255:10 pmUVF - BOS
1 stop8h 06mJetBlue
Deal found 12/17$687
This JetBlue deal was found by Cheapflights users on 12/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:15 amBOS - UVF
Nonstop4h 44mJetBlue
Sat 12/271:25 pmUVF - BOS
Nonstop5h 15mJetBlue
Deal found 12/17$689
This JetBlue deal was found by Cheapflights users on 12/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:15 amBOS - UVF
Nonstop4h 44mJetBlue
Thu 12/255:10 pmUVF - BOS
1 stop8h 06mJetBlue
Deal found 12/17$699
This Priceline deal was found by Cheapflights users on 12/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:15 amBOS - UVF
Nonstop4h 44mJetBlue
Wed 12/242:20 pmUVF - BOS
Nonstop5h 14mJetBlue
Deal found 12/17$720
This JetBlue deal was found by Cheapflights users on 12/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:40 amBOS - UVF
1 stop8h 17mJetBlue
Mon 12/295:10 pmUVF - BOS
1 stop8h 06mJetBlue
Deal found 12/17$727
This Expedia deal was found by Cheapflights users on 12/17. 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.
Sun 12/217:15 amBOS - UVF
Nonstop4h 44mMultiple Airlines
Wed 12/245:15 pmUVF - BOS
1 stop30h 22mMultiple Airlines
Deal found 12/17$728
This Mytrip deal was found by Cheapflights users on 12/17. 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 12/207:55 amBOS - SLU
3 stops31h 55mMultiple Airlines
Fri 12/267:10 pmSLU - BOS
2 stops18h 02mMultiple Airlines
Deal found 12/17$2,609

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$363
(Delta)

One-way from

$131
(Delta)

Popular in

July

Cheapest in

March

Average price

$644

Good round-trip deal

$855 or less

Good one-way deal

$526 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. 17% potential increase in price ($141 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 2025.
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

Mon 1/12

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Wed 1/21

4:25 pm-1:04 am

1 stop9h 39m

$363

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 1/14

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Tue 1/20

4:25 pm-1:04 am

1 stop9h 39m

$363

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 1/14

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Wed 1/21

4:25 pm-1:04 am

1 stop9h 39m

$363

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 3/4

6:45 pm-3:05 pm

1 stop19h 20m

Castries Hewanorra

Wed 3/18

3:24 pm-10:00 am

1 stop18h 36m

$363

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 3/4

6:45 pm-3:05 pm

1 stop19h 20m

Castries Hewanorra

Mon 3/16

3:24 pm-10:00 am

1 stop18h 36m

$370

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 1/29

7:35 pm-3:03 pm

2 stops18h 28m

Castries Hewanorra

Sat 2/7

5:02 pm-10:30 am

2 stops18h 28m

$392

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 1/9

5:10 am-3:41 pm

1 stop9h 31m

Castries Hewanorra

Sun 1/18

5:21 pm-12:13 am

1 stop7h 52m

$397

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 3/9

6:10 am-2:57 pm

1 stop8h 47m

Castries Hewanorra

Sat 3/14

5:02 pm-10:12 pm

Nonstop5h 10m

$420

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 1/20

7:30 pm-3:43 pm

2 stops19h 13m

Castries Hewanorra

Tue 1/27

5:21 pm-7:57 am

1 stop15h 36m

$424

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 3/10

6:10 am-2:57 pm

1 stop8h 47m

Castries Hewanorra

Sat 3/14

5:02 pm-10:12 pm

Nonstop5h 10m

$430

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 32 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 $543). 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 December 18, 2025.

When flying from Boston to Saint Lucia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 26% versus a flight at noon.

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 December 18, 2025.
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
8,007 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
9,091 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
11,054 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
2,896 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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
10,534 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Comfort

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 8h 30m. The distance from Boston to Saint Lucia is about 2066 mi.

  • 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 $142 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 $794, our data indicates the cheapest price to be $248. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $363.

  • 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 $543). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$357Average$706FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$372Average$669FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$385Average$587FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$390Average$650FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$457Average$531FlexibilityNo cancel feeOn-time67%

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