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Saint Lucia

$123+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$327
(American Airlines)

One-way from

$123
(Delta)

Popular in

December

Cheapest in

March

Average price

$607

Good round-trip deal

$702 or less

Good one-way deal

$288 or less
From Boston Logan Intl to Saint Lucia
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One-way flight from Boston Logan Intl to Saint Lucia
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Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Saint Lucia.
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Price to beat on a one-way flight from Boston Logan Intl to Saint Lucia.
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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 September 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/13. 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 11/146:30 amBOS - UVF
1 stop7h 34mAmerican Airlines
Thu 11/202:23 pmUVF - BOS
1 stop11h 28mAmerican Airlines
Deal found 9/13$328
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 11/96:15 pmBOS - UVF
2 stops18h 04mAmerican Airlines
Thu 11/132:19 pmUVF - BOS
1 stop11h 32mAmerican Airlines
Deal found 9/14$332
This American Airlines deal was found by Cheapflights users on 9/13. 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 10/304:30 pmBOS - UVF
1 stop22h 30mAmerican Airlines
Mon 11/32:19 pmUVF - BOS
1 stop9h 46mAmerican Airlines
Deal found 9/13$335
This American Airlines deal was found by Cheapflights users on 9/13. 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 10/298:10 pmBOS - UVF
2 stops18h 50mAmerican Airlines
Sun 11/24:52 pmUVF - BOS
2 stops19h 03mAmerican Airlines
Deal found 9/13$337
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 11/135:18 pmBOS - UVF
2 stops19h 01mAmerican Airlines
Mon 11/174:05 pmUVF - BOS
1 stop24h 50mAmerican Airlines
Deal found 9/14$338
This American Airlines deal was found by Cheapflights users on 9/13. 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 10/156:13 pmBOS - UVF
1 stop20h 47mAmerican Airlines
Sun 10/194:00 pmUVF - BOS
2 stops18h 14mAmerican Airlines
Deal found 9/13$344
This American Airlines deal was found by Cheapflights users on 9/12. 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 12/76:27 pmBOS - UVF
2 stops17h 52mAmerican Airlines
Sat 12/202:06 pmUVF - BOS
1 stop8h 52mAmerican Airlines
Deal found 9/12$392
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Fri 9/266:00 amBOS - SLU
3 stops31h 10mMultiple Airlines
Fri 10/36:10 pmSLU - BOS
2 stops17h 19mMultiple Airlines
Deal found 9/12$776
This Mytrip deal was found by Cheapflights users on 9/12. 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 9/206:00 amBOS - SLU
3 stops29h 45mMultiple Airlines
Sat 9/279:10 amSLU - BOS
2 stops24h 45mMultiple Airlines
Deal found 9/12$811
This Mytrip deal was found by Cheapflights users on 9/13. 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 12/67:55 pmBOS - SLU
2 stops22h 05mMultiple Airlines
Sat 12/136:20 pmSLU - BOS
3 stops28h 48mMultiple Airlines
Deal found 9/13$813
This Mytrip deal was found by Cheapflights users on 9/13. 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 10/296:15 amBOS - SLU
2 stops12h 45mMultiple Airlines
Sun 11/212:35 pmSLU - BOS
2 stops21h 57mMultiple Airlines
Deal found 9/13$837
This Mytrip deal was found by Cheapflights users on 9/13. 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 11/16:16 amBOS - SLU
3 stops15h 54mMultiple Airlines
Thu 11/66:20 pmSLU - BOS
3 stops28h 48mMultiple Airlines
Deal found 9/13$883

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 September 15, 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

Wed 12/31

7:25 pm-3:27 pm

1 stop19h 02m

Castries Hewanorra

Wed 1/7

4:24 pm-12:59 am

1 stop9h 35m

$392

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 12/6

4:26 pm-1:19 pm

2 stops19h 53m

Castries Hewanorra

Mon 12/15

4:53 pm-1:20 pm

2 stops21h 27m

$392

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 1/4

7:25 pm-3:07 pm

1 stop18h 42m

Castries Hewanorra

Wed 1/7

4:24 pm-12:59 am

1 stop9h 35m

$392

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 9/29

12:15 pm-2:15 pm

1 stop26h 00m

Castries Hewanorra

Fri 10/3

3:10 pm-11:29 am

1 stop20h 19m

$408

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 12/7

5:11 am-2:56 pm

1 stop8h 45m

Castries Hewanorra

Sat 12/13

4:42 pm-8:44 pm

Nonstop5h 02m

$446

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 12/7

5:11 am-2:56 pm

1 stop8h 45m

Castries Hewanorra

Fri 12/19

2:20 pm-6:34 pm

Nonstop5h 14m

$447

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 12/30

7:25 pm-3:27 pm

1 stop19h 02m

Castries Hewanorra

Wed 1/7

4:24 pm-12:59 am

1 stop9h 35m

$457

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 2/6

5:40 am-3:04 pm

1 stop8h 24m

Castries Hewanorra

Tue 2/10

4:24 pm-12:59 am

1 stop9h 35m

$457

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 1/1

9:30 am-3:54 pm

2 stops29h 24m

Castries Hewanorra

Thu 1/8

3:35 pm-10:32 am

2 stops19h 57m

$478

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 1/2

7:25 pm-1:36 pm

1 stop17h 11m

Castries Hewanorra

Thu 1/8

4:24 pm-12:59 am

1 stop9h 35m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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, January is the cheapest month in which you can book a flight from Boston to Saint Lucia (average of $556). Flying from Boston to Saint Lucia in December is currently the most expensive (average of $730). 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 September 15, 2025.

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 September 15, 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
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,929 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
JetBlue
7.2
Good
2,912 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 19h 02m. 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 $612, our data indicates the cheapest price to be $213. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $391.

  • 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, January is the cheapest month in which you can book a flight from Boston to Saint Lucia (average of $556). Flying from Boston to Saint Lucia in December is currently the most expensive (average of $730). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$351Average$644FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$385Average$587FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$386Average$647FlexibilityNo cancel feeOn-time71%
DeltaCheapest$387Average$707FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$457Average$531FlexibilityNo cancel feeOn-time67%

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