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Cheap flights from Boston to Saint Lucia from $120

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 3/3. 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
6:00 am - 2:58 pm
BOS
-
UVF
8h 58m
1 stop
American Airlines Logo
3:58 pm - 10:01 am
UVF
-
BOS
18h 03m
1 stop
$292American Airlines
Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
6:00 am - 2:58 pm
BOS
-
UVF
8h 58m
1 stop
American Airlines Logo
3:58 pm - 11:36 am
UVF
-
BOS
19h 38m
2 stops
$297American Airlines
Tue, Mar 10 - Wed, Mar 25
American Airlines Logo
6:25 pm - 3:58 pm
BOS
-
UVF
20h 33m
1 stop
American Airlines Logo
4:58 pm - 10:01 am
UVF
-
BOS
18h 03m
1 stop
$300American Airlines
Mon, Mar 2 - Thu, Mar 5
American Airlines Logo
6:25 pm - 1:48 pm
BOS
-
UVF
19h 23m
1 stop
American Airlines Logo
3:58 pm - 10:02 am
UVF
-
BOS
18h 04m
1 stop
$317American Airlines
Mon, Mar 23 - Mon, Mar 30
American Airlines Logo
9:33 pm - 3:58 pm
BOS
-
UVF
17h 25m
2 stops
American Airlines Logo
4:58 pm - 10:01 am
UVF
-
BOS
18h 03m
1 stop
$321American Airlines
Sun, Feb 22 - Thu, Feb 26
American Airlines Logo
8:30 pm - 3:58 pm
BOS
-
UVF
18h 28m
2 stops
American Airlines Logo
4:58 pm - 10:05 am
UVF
-
BOS
18h 07m
2 stops
$322American Airlines
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
6:52 pm - 3:18 pm
BOS
-
UVF
19h 26m
1 stop
American Airlines Logo
3:48 pm - 10:01 am
UVF
-
BOS
19h 13m
1 stop
$323American Airlines
Sun, Feb 22 - Thu, Feb 26
American Airlines Logo
6:25 pm - 3:58 pm
BOS
-
UVF
20h 33m
1 stop
American Airlines Logo
4:58 pm - 10:01 am
UVF
-
BOS
18h 03m
1 stop
$325American Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
4:22 pm - 5:15 pm
BOS
-
SLU
23h 53m
3 stops
Multiple Airlines Logo
7:10 pm - 11:59 pm
SLU
-
BOS
28h 49m
2 stops
$778Multiple Airlines
Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
6:15 am - 1:10 pm
BOS
-
SLU
29h 55m
2 stops
Multiple Airlines Logo
7:10 pm - 10:01 pm
SLU
-
BOS
26h 51m
3 stops
$791Multiple Airlines
Fri, Mar 6 - Tue, Mar 10

American Airlines flights from Boston to Saint Lucia

Our best American Airlines deals on Boston to Saint Lucia flight tickets
American Airlines
Mar 10
BOS6:00 amBoston Logan Intl
8h 58m
1 stop
UVF2:58 pmCastries Hewanorra
Mar 17
UVF3:58 pmCastries Hewanorra
18h 03m
1 stop
BOS10:01 amBoston Logan Intl
$292
American Airlines
Mar 10
BOS6:00 amBoston Logan Intl
8h 58m
1 stop
UVF2:58 pmCastries Hewanorra
Mar 25
UVF3:58 pmCastries Hewanorra
19h 38m
2 stops
BOS11:36 amBoston Logan Intl
$297
American Airlines
Mar 2
BOS6:25 pmBoston Logan Intl
20h 33m
1 stop
UVF3:58 pmCastries Hewanorra
Mar 5
UVF4:58 pmCastries Hewanorra
18h 03m
1 stop
BOS10:01 amBoston Logan Intl
$300

Air Canada flights from Boston to Saint Lucia

Our best Air Canada deals on Boston to Saint Lucia flight tickets
Air Canada
Jun 8
BOS5:00 pmBoston Logan Intl
21h 10m
1 stop
UVF2:10 pmCastries Hewanorra
Jun 12
UVF3:05 pmCastries Hewanorra
18h 49m
1 stop
BOS9:54 amBoston Logan Intl
$408
Air Canada
Jun 8
BOS12:30 pmBoston Logan Intl
25h 40m
1 stop
UVF2:10 pmCastries Hewanorra
Jun 12
UVF3:05 pmCastries Hewanorra
23h 42m
2 stops
BOS2:47 pmBoston Logan Intl
$412
Air Canada
Jun 8
BOS6:50 pmBoston Logan Intl
19h 20m
2 stops
UVF2:10 pmCastries Hewanorra
Jun 12
UVF3:05 pmCastries Hewanorra
18h 40m
2 stops
BOS9:45 amBoston Logan Intl
$415

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 February 7, 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

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 3/10

6:00 am-2:58 pm

1 stop8h 58m

Castries Hewanorra

Tue 3/17

3:58 pm-10:01 am

1 stop18h 03m

$292

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Tue 3/10

6:00 am-2:58 pm

1 stop8h 58m

Castries Hewanorra

Wed 3/25

3:58 pm-11:36 am

2 stops19h 38m

$297

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 3/2

6:25 pm-3:58 pm

1 stop20h 33m

Castries Hewanorra

Thu 3/5

4:58 pm-10:01 am

1 stop18h 03m

$300

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 3/23

6:25 pm-1:48 pm

1 stop19h 23m

Castries Hewanorra

Mon 3/30

3:58 pm-10:02 am

1 stop18h 04m

$317

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 2/22

9:33 pm-3:58 pm

2 stops17h 25m

Castries Hewanorra

Thu 2/26

4:58 pm-10:01 am

1 stop18h 03m

$321

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 2/25

8:30 pm-3:58 pm

2 stops18h 28m

Castries Hewanorra

Wed 3/4

4:58 pm-10:05 am

2 stops18h 07m

$322

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 2/22

6:52 pm-3:18 pm

1 stop19h 26m

Castries Hewanorra

Thu 2/26

3:48 pm-10:01 am

1 stop19h 13m

$323

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Wed 2/25

6:25 pm-3:58 pm

1 stop20h 33m

Castries Hewanorra

Wed 3/4

4:58 pm-10:01 am

1 stop18h 03m

$325

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Thu 3/5

4:22 pm-5:15 pm

3 stops23h 53m

Castries George F. L. Charle

Mon 3/9

7:10 pm-11:59 pm

2 stops28h 49m

$778

BostonCastries

BOS - SLU

BOSSLU

Boston Logan Intl

Fri 3/6

6:15 am-1:10 pm

2 stops29h 55m

Castries George F. L. Charle

Tue 3/10

7:10 pm-10:01 pm

3 stops26h 51m

$791

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 month to fly to Saint Lucia?

The month of August is, on average, the cheapest month to fly to Saint Lucia from Boston, with most prices found around $382. If you aren’t able to travel to Saint Lucia during the month of August, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $528.

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

$369

Fastest flight time

4h 44m

Direct flights

Sun

Airports in Saint Lucia

7 airports
The best one-way flight to Saint Lucia from Boston in the past 72 hours is $369. The best round-trip flight deal from Boston to Saint Lucia found on momondo in the last 72 hours is $413.
The fastest flight from Boston to Saint Lucia takes 4h 44m
Direct flights go from Boston to Saint Lucia on Sunday. The only airline offering direct flights is JetBlue.
There are 7 airports in Saint Lucia. From Boston there are direct flights to 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
United AirlinesPriceFrom $188Free CancellationRating
7.4
9,254 reviews
Search United Airlines flights
DeltaPriceFrom $248Free CancellationRating
7.9
8,172 reviews
Search Delta flights
American AirlinesPriceFrom $292Free CancellationRating
7.2
11,249 reviews
Search American Airlines flights
Air CanadaPriceFrom $370Free CancellationRating
7.1
10,697 reviews
Search Air Canada flights
JetBluePriceFrom $382Free CancellationRating
7.2
2,896 reviews
Search JetBlue 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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