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Saint Lucia

$95+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$291
(American Airlines)

One-way from

$95
(American Airlines)

Popular in

December

Cheapest in

March

Average price

$591

Good round-trip deal

$585 or less

Good one-way deal

$213 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.
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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. 6% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 20, 2025.

This American Airlines deal was found by Cheapflights users on 10/20. 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 11/137:17 pmBOS - UVF
2 stops18h 47mAmerican Airlines
Mon 11/174:52 pmUVF - BOS
2 stops18h 43mAmerican Airlines
Deal found 10/20$296
This American Airlines deal was found by Cheapflights users on 10/19. 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 stops16h 55mAmerican Airlines
Sun 11/24:52 pmUVF - BOS
2 stops19h 03mAmerican Airlines
Deal found 10/19$301
This American Airlines deal was found by Cheapflights users on 10/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:26 amBOS - UVF
2 stops26h 53mAmerican Airlines
Tue 12/24:52 pmUVF - BOS
2 stops18h 25mAmerican Airlines
Deal found 10/17$358
This Trip.com deal was found by Cheapflights users on 10/19. 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.
Sat 12/69:35 amBOS - UVF
Nonstop4h 45mJetBlue
Sat 12/134:05 pmUVF - BOS
Nonstop5h 09mJetBlue
Deal found 10/19$387
This American Airlines deal was found by Cheapflights users on 10/19. 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 11/66:15 pmBOS - UVF
2 stops18h 04mAmerican Airlines
Thu 11/134:52 pmUVF - BOS
1 stop8h 59mAmerican Airlines
Deal found 10/19$388
This American Airlines deal was found by Cheapflights users on 10/19. 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 10/265:30 amBOS - UVF
1 stop9h 30mAmerican Airlines
Sun 11/24:52 pmUVF - BOS
2 stops19h 03mAmerican Airlines
Deal found 10/19$393
This Mytrip deal was found by Cheapflights users on 10/19. 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
Fri 12/121:55 pmSLU - BOS
3 stops23h 17mMultiple Airlines
Deal found 10/19$894
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Tue 11/1110:15 amBOS - SLU
3 stops22h 15mMultiple Airlines
Thu 11/206:20 pmSLU - BOS
3 stops23h 30mMultiple Airlines
Deal found 10/19$938
This Mytrip deal was found by Cheapflights users on 10/19. 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 10/266:15 amBOS - SLU
2 stops12h 45mMultiple Airlines
Sun 11/212:10 pmSLU - BOS
2 stops22h 22mMultiple Airlines
Deal found 10/19$959
This Mytrip deal was found by Cheapflights users on 10/20. 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 12/139:32 pmBOS - SLU
3 stops41h 03mMultiple Airlines
Sat 12/2012:35 pmSLU - BOS
2 stops27h 17mMultiple Airlines
Deal found 10/20$1,026
This Mytrip deal was found by Cheapflights users on 10/20. 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 12/155:30 amBOS - SLU
2 stops12h 30mMultiple Airlines
Sat 12/209:10 amSLU - BOS
2 stops30h 42mMultiple Airlines
Deal found 10/20$1,039
This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:50 amBOS - SLU
2 stops32h 25mMultiple Airlines
Thu 12/2512:35 pmSLU - BOS
2 stops22h 22mMultiple Airlines
Deal found 10/18$1,203

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 October 20, 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

6:54 pm-3:03 pm

2 stops19h 09m

Castries Hewanorra

Fri 1/16

5:02 pm-12:30 pm

2 stops20h 28m

$296

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 2/27

7:15 pm-2:15 pm

2 stops18h 00m

Castries Hewanorra

Tue 3/3

5:00 pm-9:46 am

2 stops17h 46m

$296

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 1/18

5:10 am-3:15 pm

1 stop9h 05m

Castries Hewanorra

Wed 1/21

4:40 pm-12:16 am

1 stop8h 36m

$378

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 1/13

5:10 am-3:15 pm

1 stop9h 05m

Castries Hewanorra

Fri 1/23

4:40 pm-12:16 am

1 stop8h 36m

$378

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 1/13

5:10 am-3:15 pm

1 stop9h 05m

Castries Hewanorra

Tue 1/20

4:40 pm-12:16 am

1 stop8h 36m

$378

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 1/13

5:10 am-3:15 pm

1 stop9h 05m

Castries Hewanorra

Thu 1/22

4:40 pm-12:16 am

1 stop8h 36m

$378

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 1/14

5:10 am-3:15 pm

1 stop9h 05m

Castries Hewanorra

Fri 1/23

4:40 pm-12:16 am

1 stop8h 36m

$378

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 1/12

5:10 am-3:15 pm

1 stop9h 05m

Castries Hewanorra

Fri 1/23

4:40 pm-12:16 am

1 stop8h 36m

$378

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/17

8:47 pm-1:47 pm

2 stops16h 00m

Castries Hewanorra

Thu 1/22

5:02 pm-12:25 pm

2 stops20h 23m

$381

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/17

6:17 pm-1:47 pm

1 stop18h 30m

Castries Hewanorra

Fri 1/23

5:02 pm-10:27 am

2 stops18h 25m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

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 October 20, 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 October 20, 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
7,976 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,976 reviews
Delta
7.9
Good
7,976 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,993 reviews
Delta
7.9
Good
7,976 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,026 reviews
Delta
7.9
Good
7,976 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
JetBlue
7.2
Good
2,907 reviews
Delta
7.9
Good
7,976 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Air Canada
7.1
Good
10,334 reviews
Delta
7.9
Good
7,976 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 9h 05m. 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 $547, our data indicates the cheapest price to be $148. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $378.

  • 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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$351Average$651FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$385Average$587FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$387Average$647FlexibilityNo cancel feeOn-time71%
DeltaCheapest$387Average$691FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$457Average$531FlexibilityNo cancel feeOn-time67%

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