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Saint Lucia

$105+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
May 29 — Jun 51
Fri 5/29
Fri 6/5
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 April 29, 2026.

This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 11/105:20 pm
BOS
-
UVF
2 stops19h 01m
American Airlines
Tue 11/174:50 pm
UVF
-
BOS
2 stops18h 22m
American Airlines
Deal found 4/28$305
This American Airlines deal was found by Cheapflights users on 4/27. 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 11/45:20 pm
BOS
-
UVF
2 stops19h 01m
American Airlines
Tue 11/104:50 pm
UVF
-
BOS
2 stops18h 22m
American Airlines
Deal found 4/27$310
This American Airlines deal was found by Cheapflights users on 4/24. 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 12/113:53 pm
BOS
-
UVF
1 stop19h 36m
American Airlines
Wed 12/164:53 pm
UVF
-
BOS
2 stops19h 13m
American Airlines
Deal found 4/24$311
This Delta deal was found by Cheapflights users on 4/25. 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.
Sat 8/295:45 am
BOS
-
UVF
1 stop8h 23m
Delta
Thu 9/33:28 pm
UVF
-
BOS
1 stop9h 38m
Delta
Deal found 4/25$348
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 11/910:59 am
BOS
-
UVF
2 stops25h 22m
American Airlines
Wed 11/112:28 pm
UVF
-
BOS
2 stops23h 31m
American Airlines
Deal found 4/29$385
This American Airlines deal was found by Cheapflights users on 4/29. 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 11/49:26 am
BOS
-
UVF
2 stops26h 55m
American Airlines
Thu 11/124:04 pm
UVF
-
BOS
1 stop18h 52m
American Airlines
Deal found 4/29$390
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 11/89:00 am
BOS
-
UVF
2 stops27h 21m
American Airlines
Thu 11/124:04 pm
UVF
-
BOS
1 stop18h 52m
American Airlines
Deal found 4/29$399
This American Airlines deal was found by Cheapflights users on 4/25. 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 8/123:19 pm
BOS
-
UVF
2 stops22h 45m
American Airlines
Wed 8/193:04 pm
UVF
-
BOS
2 stops32h 37m
American Airlines
Deal found 4/25$404
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Sat 8/295:22 pm
BOS
-
UVF
2 stops21h 07m
American Airlines
Wed 9/23:04 pm
UVF
-
BOS
2 stops21h 12m
American Airlines
Deal found 4/29$419
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 11/125:20 pm
BOS
-
UVF
2 stops19h 01m
American Airlines
Wed 11/182:28 pm
UVF
-
BOS
2 stops10h 19m
American Airlines
Deal found 4/29$424
This Mytrip deal was found by Cheapflights users on 4/26. 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.
Sun 5/245:45 am
BOS
-
SLU
2 stops33h 50m
Multiple Airlines
Thu 5/285:50 pm
SLU
-
BOS
2 stops30h 04m
Multiple Airlines
Deal found 4/26$812
This Mytrip deal was found by Cheapflights users on 4/24. 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 5/245:45 am
BOS
-
SLU
2 stops33h 50m
Multiple Airlines
Sun 5/316:00 pm
SLU
-
BOS
2 stops29h 54m
Multiple Airlines
Deal found 4/24$829

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 April 29, 2026.

Round-trip from

$305
(American Airlines)

One-way from

$105
(American Airlines)

Popular in

April

Cheapest in

August

Average price

$838

Good round-trip deal

$1,023 or less
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 ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip 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 April 29, 2026.
Use the filters below to find and compare flights from Boston to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 5/21

8:00 pm-2:16 pm

2 stops18h 16m

Castries Hewanorra

Wed 5/27

3:16 pm-8:37 am

2 stops17h 21m

$474

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 7/4

6:00 am-3:31 pm

1 stop9h 31m

Castries Hewanorra

Sat 7/11

12:55 pm-9:51 am

2 stops20h 56m

$548

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 9/21

8:15 pm-2:23 pm

1 stop18h 08m

Castries Hewanorra

Wed 9/23

3:38 pm-1:06 am

1 stop9h 28m

$577

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 8/22

6:00 am-1:31 pm

1 stop7h 31m

Castries Hewanorra

Sat 8/29

2:35 pm-9:23 am

2 stops18h 48m

$581

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 8/29

6:00 am-1:31 pm

1 stop7h 31m

Castries Hewanorra

Sat 9/5

2:35 pm-5:36 pm

2 stops27h 01m

$603

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 9/21

8:15 pm-2:23 pm

1 stop18h 08m

Castries Hewanorra

Thu 9/24

3:38 pm-1:06 am

1 stop9h 28m

$686

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 10/3

6:00 am-1:31 pm

1 stop7h 31m

Castries Hewanorra

Sat 10/10

2:35 pm-2:22 pm

1 stop23h 47m

$721
Quickest round-trip

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 7/24

5:30 am-2:12 pm

1 stop8h 42m

Castries Hewanorra

Thu 8/6

3:33 pm-1:20 am

1 stop9h 47m

$751

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 7/21

5:30 am-2:12 pm

1 stop8h 42m

Castries Hewanorra

Wed 8/5

3:33 pm-1:20 am

1 stop9h 47m

$805

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Sun 5/24

5:45 am-3:35 pm

2 stops33h 50m

Castries George F. L. Charle

Thu 5/28

5:50 pm-11:54 pm

2 stops30h 04m

$812

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

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

How far ahead should I book a flight from Boston to Saint Lucia?

To ensure you get the cheapest price possible for a flight from Boston to Saint Lucia, you should look to book at least 2 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $131). Flying from Boston to Saint Lucia in September is currently the most expensive (average of $517). 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 April 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 April 29, 2026.
Get a feel of what it's like to fly with Delta,JetBlue, andAmerican 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
8,465 reviews

Crew

8.5

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
8,465 reviews
Delta
7.9
Good
8,465 reviews

Crew

8.5

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
2,968 reviews
Delta
7.9
Good
8,465 reviews

Crew

8.5

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
7.1
Good
11,678 reviews
Delta
7.9
Good
8,465 reviews

Crew

8.5

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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 9h 31m. 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 $1,218, our data indicates the cheapest price to be $558. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $516.

  • 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 $131). Flying from Boston to Saint Lucia in September is currently the most expensive (average of $517). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Boston to Saint Lucia

Discover the top 3 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 April 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$140Average$768FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$292Average$603FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$382Average$679FlexibilityNo cancel feeOn-time62%

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