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Saint Lucia

$141+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$368
(Air Canada)

One-way from

$141
(Air Canada)

Popular in

July

Cheapest in

September

Average price

$745

Good round-trip deal

$830 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. 12% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip 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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:55 pmBOS - UVF
1 stop19h 20mAir Canada
Fri 9/123:10 pmUVF - BOS
1 stop27h 00mAir Canada
Deal found 6/11$368
This JetBlue deal was found by Cheapflights users on 6/10. 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.
Sat 8/305:25 amBOS - UVF
1 stop10h 55mJetBlue
Wed 9/33:06 pmUVF - BOS
1 stop8h 48mJetBlue
Deal found 6/10$466
This Mytrip deal was found by Cheapflights users on 6/10. 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 9/2211:25 amBOS - UVF
3 stops26h 50mMultiple Airlines
Fri 9/263:10 pmUVF - BOS
2 stops18h 20mMultiple Airlines
Deal found 6/10$472
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:00 amBOS - UVF
1 stop7h 31mUnited Airlines
Sat 11/112:52 pmUVF - BOS
2 stops24h 36mUnited Airlines
Deal found 6/10$479
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 11/116:00 amBOS - UVF
1 stop8h 10mDelta
Tue 11/184:35 pmUVF - BOS
1 stop9h 25mDelta
Deal found 6/10$517
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 9/165:10 pmBOS - UVF
2 stops21h 07mAmerican Airlines
Fri 9/263:17 pmUVF - BOS
2 stops19h 01mAmerican Airlines
Deal found 6/12$522
This Mytrip deal was found by Cheapflights users on 6/9. 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 10/36:10 amBOS - SLU
2 stops31h 00mMultiple Airlines
Sun 10/512:30 pmSLU - BOS
3 stops29h 48mMultiple Airlines
Deal found 6/9$757

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 June 12, 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 9/8

6:55 pm-2:15 pm

1 stop19h 20m

Castries Hewanorra

Fri 9/12

3:10 pm-6:10 pm

1 stop27h 00m

$368

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 8/30

5:25 am-4:20 pm

1 stop10h 55m

Castries Hewanorra

Wed 9/3

3:06 pm-11:54 pm

1 stop8h 48m

$466

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 9/10

6:30 pm-2:15 pm

2 stops43h 45m

Castries Hewanorra

Sun 9/14

2:35 pm-9:25 pm

2 stops30h 50m

$499

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 8/16

5:35 am-2:15 pm

1 stop8h 40m

Castries Hewanorra

Wed 8/20

3:35 pm-1:20 am

1 stop9h 45m

$517

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 8/9

5:54 am-1:55 pm

1 stop8h 01m

Castries Hewanorra

Sat 8/16

3:35 pm-10:20 am

2 stops18h 45m

$522

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 8/9

6:07 am-3:30 pm

1 stop9h 23m

Castries Hewanorra

Sat 8/16

12:55 pm-9:26 am

1 stop20h 31m

$553

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Thu 9/4

4:15 pm-11:30 am

2 stops19h 15m

Castries George F. L. Charle

Sun 9/7

5:00 am-12:39 am

2 stops19h 39m

$811

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 9/8

6:00 am-2:15 pm

2 stops32h 15m

$141

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 9/9

5:35 am-2:15 pm

1 stop8h 40m

$213

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 6/25

8:11 pm-2:15 pm

2 stops18h 04m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 14 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 June 12, 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 June 12, 2025.
Read reviews from past customers who have flown Delta, United Airlines and JetBlue from Boston to Saint Lucia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7.3
Good
2,925 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
9,531 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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.

  • What are the cheapest airlines to fly from Boston to Saint Lucia one-way?

    $141 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $213 and $229, 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 $1,173, our data indicates the cheapest price to be $497. The most popular route (Boston Logan Intl - Castries Hewanorra), is priced around $339.

  • 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$361Average$587FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$365Average$648FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$386Average$655FlexibilityNo cancel feeOn-time71%
DeltaCheapest$387Average$613FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$491Average$531FlexibilityNo cancel feeOn-time67%

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