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Cheap flights from Boston to Saint Lucia from $123

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 11/13. 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

American Airlines Logo
6:30 am - 3:04 pmBOS-UVF
7h 34m1 stop
American Airlines Logo
2:23 pm - 12:51 amUVF-BOS
11h 28m1 stop
$328American Airlines
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Fri, Nov 14 - Thu, Nov 20
American Airlines Logo
5:18 pm - 1:19 pmBOS-UVF
19h 01m2 stops
American Airlines Logo
4:05 pm - 7:21 amUVF-BOS
16h 16m2 stops
$332American Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
American Airlines Logo
6:30 am - 3:04 pmBOS-UVF
7h 34m1 stop
American Airlines Logo
4:52 pm - 8:37 amUVF-BOS
16h 45m2 stops
$333American Airlines
Find Deal
Fri, Nov 14 - Thu, Nov 20
American Airlines Logo
4:30 pm - 3:00 pmBOS-UVF
22h 30m1 stop
American Airlines Logo
2:19 pm - 11:05 pmUVF-BOS
9h 46m1 stop
$335American Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
Air Canada Logo
12:15 pm - 2:15 pmBOS-UVF
26h 00m1 stop
Air Canada Logo
3:10 pm - 11:29 amUVF-BOS
20h 19m1 stop
$408Air Canada
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Mon, Sep 29 - Fri, Oct 3
Air Canada Logo
6:15 am - 4:25 pmBOS-UVF
9h 10m1 stop
Air Canada Logo
5:15 pm - 3:57 pmUVF-BOS
23h 42m1 stop
$418Air Canada
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Mon, Nov 10 - Mon, Nov 17
JetBlue Logo
7:50 pm - 2:56 pmBOS-UVF
18h 06m1 stop
JetBlue Logo
4:05 pm - 8:14 pmUVF-BOS
5h 09mnonstop
$446JetBlue
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Sat, Dec 6 - Sat, Dec 13
JetBlue Logo
5:11 am - 2:56 pmBOS-UVF
8h 45m1 stop
JetBlue Logo
2:20 pm - 6:34 pmUVF-BOS
5h 14mnonstop
$447JetBlue
Find Deal
Sun, Dec 7 - Fri, Dec 19
Logo
7:55 pm - 4:25 pmBOS-UVF
20h 30m1 stop
Logo
3:40 pm - 9:35 amUVF-BOS
18h 55m1 stop
$499
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Sat, Nov 1 - Thu, Nov 6
Logo
7:55 pm - 4:25 pmBOS-UVF
20h 30m1 stop
Logo
3:40 pm - 2:52 pmUVF-BOS
24h 12m2 stops
$526
Find Deal
Sat, Nov 1 - Thu, Nov 6

JetBlue flights from Boston to Saint Lucia

Our best JetBlue deals on Boston to Saint Lucia flight tickets
JetBlue
Dec 6
BOS7:50 pmBoston Logan Intl
18h 06m
1 stop
UVF2:56 pmCastries Hewanorra
Dec 13
UVF4:05 pmCastries Hewanorra
5h 09m
BOS8:14 pmBoston Logan Intl
$446
Find similar
JetBlue
Dec 7
BOS5:11 amBoston Logan Intl
8h 45m
1 stop
UVF2:56 pmCastries Hewanorra
Dec 19
UVF2:20 pmCastries Hewanorra
5h 14m
BOS6:34 pmBoston Logan Intl
$447
Find similar
JetBlue
Oct 28
BOS5:40 amBoston Logan Intl
8h 17m
1 stop
UVF1:57 pmCastries Hewanorra
Nov 4
UVF4:57 pmCastries Hewanorra
7h 51m
1 stop
BOS11:48 pmBoston Logan Intl
$452
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American Airlines flights from Boston to Saint Lucia

Our best American Airlines deals on Boston to Saint Lucia flight tickets
American Airlines
Nov 14
BOS6:30 amBoston Logan Intl
7h 34m
1 stop
UVF3:04 pmCastries Hewanorra
Nov 20
UVF2:23 pmCastries Hewanorra
11h 28m
1 stop
BOS12:51 amBoston Logan Intl
$328
Find similar
American Airlines
Nov 13
BOS5:18 pmBoston Logan Intl
19h 01m
2 stops
UVF1:19 pmCastries Hewanorra
Nov 17
UVF4:05 pmCastries Hewanorra
16h 16m
2 stops
BOS7:21 amBoston Logan Intl
$332
Find similar
American Airlines
Nov 14
BOS6:30 amBoston Logan Intl
7h 34m
1 stop
UVF3:04 pmCastries Hewanorra
Nov 20
UVF4:52 pmCastries Hewanorra
16h 45m
2 stops
BOS8:37 amBoston Logan Intl
$333
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 September 15, 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

Fri 11/14

6:30 am-3:04 pm

1 stop7h 34m

Castries Hewanorra

Thu 11/20

2:23 pm-12:51 am

1 stop11h 28m

$328

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 11/13

5:18 pm-1:19 pm

2 stops19h 01m

Castries Hewanorra

Mon 11/17

4:05 pm-7:21 am

2 stops16h 16m

$332

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 11/14

6:30 am-3:04 pm

1 stop7h 34m

Castries Hewanorra

Thu 11/20

4:52 pm-8:37 am

2 stops16h 45m

$333

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Thu 10/30

4:30 pm-3:00 pm

1 stop22h 30m

Castries Hewanorra

Mon 11/3

2:19 pm-11:05 pm

1 stop9h 46m

$335

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

Mon 11/10

6:15 am-4:25 pm

1 stop9h 10m

Castries Hewanorra

Mon 11/17

5:15 pm-3:57 pm

1 stop23h 42m

$418

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 12/6

7:50 pm-2:56 pm

1 stop18h 06m

Castries Hewanorra

Sat 12/13

4:05 pm-8:14 pm

Nonstop5h 09m

$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

Sat 11/1

7:55 pm-4:25 pm

1 stop20h 30m

Castries Hewanorra

Thu 11/6

3:40 pm-9:35 am

1 stop18h 55m

$499

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 11/1

7:55 pm-4:25 pm

1 stop20h 30m

Castries Hewanorra

Thu 11/6

3:40 pm-2:52 pm

2 stops24h 12m

$526

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?

You could potentially save up to 25% on your flight if you consider stops on a Boston to Saint Lucia flight.

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

$288

Fastest flight time

4h 44m

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 $288. The best round-trip flight deal from Boston to Saint Lucia found on momondo in the last 72 hours is $702.
The fastest flight from Boston to Saint Lucia takes 4h 44m
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 $351Free CancellationRating
7.2
2,912 reviews
Search JetBlue flights
United AirlinesPriceFrom $385Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
American AirlinesPriceFrom $386Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $387Free CancellationRating
7.9
7,954 reviews
Search Delta flights
Air CanadaPriceFrom $457Free CancellationRating
7.1
10,000 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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