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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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 4, 2025.

This JetBlue deal was found by Cheapflights users on 12/4. 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 12/247:12 amBOS - UVF
1 stop7h 35mJetBlue
Sun 12/282:20 pmUVF - BOS
Nonstop5h 14mJetBlue
Deal found 12/4$424
This American Airlines deal was found by Cheapflights users on 12/3. 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 12/76:36 pmBOS - UVF
2 stops17h 43mAmerican Airlines
Thu 12/114:05 pmUVF - BOS
2 stops19h 12mAmerican Airlines
Deal found 12/3$488
This Delta deal was found by Cheapflights users on 12/3. 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 12/55:40 amBOS - UVF
1 stop8h 56mDelta
Fri 12/124:56 pmUVF - BOS
1 stop9h 31mDelta
Deal found 12/3$513
This American Airlines deal was found by Cheapflights users on 12/3. 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 12/56:19 pmBOS - UVF
2 stops18h 00mAmerican Airlines
Fri 12/124:53 pmUVF - BOS
2 stops16h 55mAmerican Airlines
Deal found 12/3$518
This American Airlines deal was found by Cheapflights users on 12/3. 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 12/45:25 amBOS - UVF
1 stop8h 37mAmerican Airlines
Thu 12/114:05 pmUVF - BOS
1 stop21h 31mAmerican Airlines
Deal found 12/3$562
This Trip.com deal was found by Cheapflights users on 12/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:15 amBOS - UVF
Nonstop4h 44mJetBlue
Wed 1/75:21 pmUVF - BOS
1 stop7h 52mJetBlue
Deal found 12/2$589
This American Airlines deal was found by Cheapflights users on 12/4. 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 12/116:29 amBOS - UVF
1 stop8h 24mAmerican Airlines
Fri 12/124:53 pmUVF - BOS
1 stop9h 06mAmerican Airlines
Deal found 12/4$605
This JetBlue deal was found by Cheapflights users on 12/4. 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 12/4$607
This Priceline deal was found by Cheapflights users on 12/4. 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.
Fri 12/125:40 amBOS - UVF
1 stop8h 17mMultiple Airlines
Wed 12/175:15 pmUVF - BOS
1 stop17h 42mMultiple Airlines
Deal found 12/4$627
This Mytrip deal was found by Cheapflights users on 12/3. 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 12/75:30 amBOS - SLU
2 stops12h 30mMultiple Airlines
Thu 12/113:20 pmSLU - BOS
3 stops33h 36mMultiple Airlines
Deal found 12/3$921
This Mytrip deal was found by Cheapflights users on 12/3. 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 12/45:30 amBOS - SLU
2 stops11h 05mMultiple Airlines
Thu 12/113:20 pmSLU - BOS
3 stops33h 36mMultiple Airlines
Deal found 12/3$1,031
This Mytrip deal was found by Cheapflights users on 12/4. 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 12/115:30 amBOS - SLU
2 stops11h 05mMultiple Airlines
Fri 12/121:55 pmSLU - BOS
2 stops21h 02mMultiple Airlines
Deal found 12/4$1,048

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 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$327
(American Airlines)

One-way from

$131
(Delta)

Popular in

December

Cheapest in

March

Average price

$921

Good round-trip deal

$800 or less

Good one-way deal

$538 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. 4% potential increase in price ($33 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 4, 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

Sun 1/25

6:35 pm-3:05 pm

1 stop19h 30m

Castries Hewanorra

Thu 1/29

4:25 pm-1:04 am

1 stop9h 39m

$347

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 2/4

7:08 am-3:53 pm

1 stop7h 45m

Castries Hewanorra

Wed 2/11

4:40 pm-12:16 am

1 stop8h 36m

$417

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 2/3

7:08 am-3:53 pm

1 stop7h 45m

Castries Hewanorra

Thu 2/12

4:51 pm-7:13 am

1 stop15h 22m

$441

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 2/2

7:08 am-3:53 pm

1 stop7h 45m

Castries Hewanorra

Tue 2/10

4:40 pm-12:16 am

1 stop8h 36m

$447

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 2/1

5:10 am-3:53 pm

1 stop9h 43m

Castries Hewanorra

Tue 2/10

4:40 pm-12:16 am

1 stop8h 36m

$447

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 1/4

7:15 am-12:59 pm

Nonstop4h 44m

Castries Hewanorra

Tue 1/13

5:21 pm-12:13 am

1 stop7h 52m

$493

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 1/26

7:08 am-3:41 pm

1 stop7h 33m

Castries Hewanorra

Thu 1/29

5:21 pm-12:13 am

1 stop7h 52m

$517

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/31

5:10 am-1:08 pm

1 stop6h 58m

Castries Hewanorra

Thu 2/12

4:51 pm-7:13 am

1 stop15h 22m

$535

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/31

5:10 am-1:08 pm

1 stop6h 58m

Castries Hewanorra

Mon 2/9

4:40 pm-12:16 am

1 stop8h 36m

$537

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 3/22

8:14 pm-2:18 pm

2 stops18h 04m

Castries Hewanorra

Sat 3/28

1:07 pm-7:17 am

1 stop18h 10m

$582

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 34 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 4, 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 4, 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
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
11,045 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
2,899 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
10,500 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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 7h 45m. 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?

    $112 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on JetBlue and Air Canada, with prices starting from $138 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 $865, our data indicates the cheapest price to be $248. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $347.

  • 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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$357Average$722FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$372Average$662FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$385Average$587FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$388Average$653FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$457Average$531FlexibilityNo cancel feeOn-time67%

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