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Cheap flights from Boston to Saint Lucia from $108

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Saint Lucia departing on 1/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to Saint Lucia

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:17 pm - 1:46 pmBOS-UVF
18h 29m1 stop
American Airlines Logo
3:10 pm - 10:56 pmUVF-BOS
8h 46m1 stop
$317American Airlines
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Sat, Jan 31 - Sat, Feb 7
American Airlines Logo
8:51 pm - 3:03 pmBOS-UVF
17h 12m2 stops
American Airlines Logo
5:02 pm - 10:29 amUVF-BOS
18h 27m2 stops
$322American Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 16
American Airlines Logo
6:17 pm - 1:46 pmBOS-UVF
18h 29m1 stop
American Airlines Logo
3:10 pm - 3:48 pmUVF-BOS
25h 38m1 stop
$323American Airlines
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Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
9:45 am - 3:03 pmBOS-UVF
28h 18m1 stop
American Airlines Logo
5:02 pm - 10:00 amUVF-BOS
17h 58m1 stop
$324American Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 16
Delta Logo
6:35 pm - 3:05 pmBOS-UVF
19h 30m1 stop
Delta Logo
4:25 pm - 10:02 amUVF-BOS
18h 37m1 stop
$357Delta
Find Deal
Mon, Jan 12 - Sun, Feb 1
JetBlue Logo
11:50 am - 5:35 pmBOS-UVF
4h 45mnonstop
JetBlue Logo
6:40 pm - 10:50 pmUVF-BOS
5h 10mnonstop
$373JetBlue
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Sat, Feb 28 - Sat, Mar 7
JetBlue Logo
8:15 pm - 3:30 pmBOS-UVF
18h 15m1 stop
JetBlue Logo
6:40 pm - 10:50 pmUVF-BOS
5h 10mnonstop
$411JetBlue
Find Deal
Sat, Feb 21 - Sat, Feb 28
Delta Logo
5:35 am - 3:05 pmBOS-UVF
8h 30m1 stop
Delta Logo
4:25 pm - 1:04 amUVF-BOS
9h 39m1 stop
$452Delta
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Wed, Jan 14 - Thu, Jan 29
Multiple Airlines Logo
5:30 am - 3:35 pmBOS-SLU
33h 05m2 stops
Multiple Airlines Logo
6:20 pm - 11:57 pmSLU-BOS
30h 37m2 stops
$752Multiple Airlines
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Sun, Jan 18 - Sat, Jan 24
Multiple Airlines Logo
10:45 am - 1:10 pmBOS-SLU
25h 25m2 stops
Multiple Airlines Logo
4:20 pm - 5:34 pmSLU-BOS
26h 14m3 stops
$849Multiple Airlines
Find Deal
Fri, Jan 16 - Mon, Jan 19

American Airlines flights from Boston to Saint Lucia

Our best American Airlines deals on Boston to Saint Lucia flight tickets
American Airlines
Jan 31
BOS6:17 pmBoston Logan Intl
18h 29m
1 stop
UVF1:46 pmCastries Hewanorra
Feb 7
UVF3:10 pmCastries Hewanorra
8h 46m
1 stop
BOS10:56 pmBoston Logan Intl
$317
Find similar
American Airlines
Jan 12
BOS8:51 pmBoston Logan Intl
17h 12m
2 stops
UVF3:03 pmCastries Hewanorra
Jan 16
UVF5:02 pmCastries Hewanorra
18h 27m
2 stops
BOS10:29 amBoston Logan Intl
$322
Find similar
American Airlines
Jan 24
BOS6:17 pmBoston Logan Intl
18h 29m
1 stop
UVF1:46 pmCastries Hewanorra
Jan 31
UVF3:10 pmCastries Hewanorra
25h 38m
1 stop
BOS3:48 pmBoston Logan Intl
$323
Find similar

Delta flights from Boston to Saint Lucia

Our best Delta deals on Boston to Saint Lucia flight tickets
Delta
Jan 12
BOS6:35 pmBoston Logan Intl
19h 30m
1 stop
UVF3:05 pmCastries Hewanorra
Feb 1
UVF4:25 pmCastries Hewanorra
18h 37m
1 stop
BOS10:02 amBoston Logan Intl
$357
Find similar
Delta
Jan 14
BOS5:35 amBoston Logan Intl
8h 30m
1 stop
UVF3:05 pmCastries Hewanorra
Jan 29
UVF4:25 pmCastries Hewanorra
9h 39m
1 stop
BOS1:04 amBoston Logan Intl
$452
Find similar
Delta
Nov 14
BOS5:40 amBoston Logan Intl
8h 59m
1 stop
UVF3:39 pmCastries Hewanorra
Nov 16
UVF4:59 pmCastries Hewanorra
9h 31m
1 stop
BOS1:30 amBoston Logan Intl
$696
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 11, 2025.
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

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/31

6:17 pm-1:46 pm

1 stop18h 29m

Castries Hewanorra

Sat 2/7

3:10 pm-10:56 pm

1 stop8h 46m

$317

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 1/12

8:51 pm-3:03 pm

2 stops17h 12m

Castries Hewanorra

Fri 1/16

5:02 pm-10:29 am

2 stops18h 27m

$322

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/24

6:17 pm-1:46 pm

1 stop18h 29m

Castries Hewanorra

Sat 1/31

3:10 pm-3:48 pm

1 stop25h 38m

$323

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 1/12

9:45 am-3:03 pm

1 stop28h 18m

Castries Hewanorra

Fri 1/16

5:02 pm-10:00 am

1 stop17h 58m

$324

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 1/12

6:35 pm-3:05 pm

1 stop19h 30m

Castries Hewanorra

Sun 2/1

4:25 pm-10:02 am

1 stop18h 37m

$357

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 2/28

11:50 am-5:35 pm

Nonstop4h 45m

Castries Hewanorra

Sat 3/7

6:40 pm-10:50 pm

Nonstop5h 10m

$373

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 2/21

8:15 pm-3:30 pm

1 stop18h 15m

Castries Hewanorra

Sat 2/28

6:40 pm-10:50 pm

Nonstop5h 10m

$411

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 1/14

5:35 am-3:05 pm

1 stop8h 30m

Castries Hewanorra

Thu 1/29

4:25 pm-1:04 am

1 stop9h 39m

$452

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Sun 1/18

5:30 am-3:35 pm

2 stops33h 05m

Castries George F. L. Charle

Sat 1/24

6:20 pm-11:57 pm

2 stops30h 37m

$752

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Fri 1/16

10:45 am-1:10 pm

2 stops25h 25m

Castries George F. L. Charle

Mon 1/19

4:20 pm-5:34 pm

3 stops26h 14m

$849

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Saint Lucia from

How to get the cheapest flight ticket from Boston to Saint Lucia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Saint Lucia?

Our data shows that Wednesday is the least expensive day to fly to Saint Lucia. Tickets to fly out on this day can be as low as $530. On the other hand, Saturday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $772.

What is the cheapest time of day to depart on your flight to Saint Lucia?

Our data shows that the cheapest Boston to Saint Lucia flights are usually those with departure times in the afternoon. Our users have found flights to Saint Lucia in the afternoon for as low as $645. Flights in the morning are often more expensive with an average ticket price of $670.

What is the cheapest Boston Logan Intl to Saint Lucia flight route?

Fly from Boston Logan Intl to Castries Hewanorra for the best Boston Logan Intl - Saint Lucia flight prices

What cabin class options are available on Boston Logan Intl to Saint Lucia flights?

There is only 1 cabin class available to choose from on Boston Logan Intl to Saint Lucia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to Saint Lucia flights?

No. A direct flight is the cheapest option for a flight between Boston to Saint Lucia.

Cheap Boston to Saint Lucia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Saint Lucia

Best Price Found

$148

Fastest flight time

4h 40m

Direct flights

Mon, Thu, Sat and Sun

Airports in Saint Lucia

1 airport
The best one-way flight to Saint Lucia from Boston in the past 72 hours is $148. The best round-trip flight deal from Boston to Saint Lucia found on momondo in the last 72 hours is $502.
The fastest flight from Boston to Saint Lucia takes 4h 40m
Direct flights go from Boston to Saint Lucia on Monday, Thursday, Saturday and Sunday. The only airline offering direct flights is JetBlue.
There is 1 airport near Saint Lucia: Castries Hewanorra (UVF)
Search flight deals

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Saint Lucia?

    Prices for flights from Boston Logan Intl Airport to Saint Lucia were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Saint Lucia?

  • How old do you have to be to fly from Boston Logan Intl Airport to Saint Lucia?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Saint Lucia.

  • What documentation or ID do you need to fly to Saint Lucia?

    The required travel and health documents for your Saint Lucia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Saint Lucia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Boston to Saint Lucia?

Best airlines flying from Boston to Saint Lucia

Compare and see reviews for airlines that fly from Boston to Saint Lucia with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $371Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
United AirlinesPriceFrom $385Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights
American AirlinesPriceFrom $386Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights
DeltaPriceFrom $387Free CancellationRating
7.9
8,005 reviews
Search Delta flights
Air CanadaPriceFrom $457Free CancellationRating
7.1
10,437 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Saint Lucia?

Finding the right flight to Saint Lucia from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Saint Lucia quick and easy, saving you time and money.

Can I find flights from Boston to Saint Lucia with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Saint Lucia from Boston with this policy.

How can momondo help me find flights from Boston to Saint Lucia?

Once you have performed a search for Boston to Saint Lucia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Boston to Saint Lucia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Boston to Saint Lucia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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