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Cheap flights from Boston to Castries from $131

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 Castries departing on 1/11. 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 Castries

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:17 pm - 1:46 pm
BOS
-
UVF
18h 29m1 stop
American Airlines Logo
4:06 pm - 11:51 pm
UVF
-
BOS
8h 45m1 stop
$363American Airlines
Sat, Jan 24 - Fri, Jan 30
American Airlines Logo
8:47 pm - 3:03 pm
BOS
-
UVF
17h 16m2 stops
American Airlines Logo
3:10 pm - 10:56 pm
UVF
-
BOS
8h 46m1 stop
$367American Airlines
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
5:15 am - 4:02 pm
BOS
-
UVF
9h 47m1 stop
American Airlines Logo
5:02 pm - 11:21 am
UVF
-
BOS
19h 19m2 stops
$368American Airlines
Mon, Jan 12 - Wed, Jan 21
American Airlines Logo
12:44 pm - 4:00 pm
BOS
-
UVF
26h 16m1 stop
American Airlines Logo
5:00 pm - 9:49 am
UVF
-
BOS
17h 49m1 stop
$372American Airlines
Mon, Mar 2 - Fri, Mar 6
American Airlines Logo
7:35 pm - 1:46 pm
BOS
-
UVF
17h 11m1 stop
American Airlines Logo
5:02 pm - 10:01 am
UVF
-
BOS
17h 59m1 stop
$375American Airlines
Fri, Jan 23 - Wed, Jan 28
American Airlines Logo
6:17 pm - 4:00 pm
BOS
-
UVF
20h 43m1 stop
American Airlines Logo
2:57 pm - 8:44 am
UVF
-
BOS
17h 47m2 stops
$376American Airlines
Sun, Mar 1 - Wed, Mar 11
American Airlines Logo
8:47 pm - 1:46 pm
BOS
-
UVF
15h 59m2 stops
American Airlines Logo
5:02 pm - 10:31 am
UVF
-
BOS
18h 29m2 stops
$380American Airlines
Sat, Jan 31 - Sat, Feb 7
American Airlines Logo
6:17 pm - 1:46 pm
BOS
-
UVF
18h 29m1 stop
American Airlines Logo
3:10 pm - 9:29 am
UVF
-
BOS
19h 19m1 stop
$381American Airlines
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
5:30 pm - 4:00 pm
BOS
-
UVF
21h 30m1 stop
American Airlines Logo
4:25 pm - 10:06 am
UVF
-
BOS
18h 41m1 stop
$384American Airlines
Sat, Feb 28 - Thu, Mar 5
American Airlines Logo
8:51 pm - 4:02 pm
BOS
-
UVF
18h 11m2 stops
American Airlines Logo
5:02 pm - 10:31 am
UVF
-
BOS
18h 29m2 stops
$385American Airlines
Sun, Jan 25 - Sun, Feb 1

American Airlines flights from Boston to Castries

Our best American Airlines deals on Boston to Castries flight tickets
American Airlines
Jan 24
BOS6:17 pmBoston Logan Intl
18h 29m
1 stop
UVF1:46 pmCastries Hewanorra
Jan 30
UVF4:06 pmCastries Hewanorra
8h 45m
1 stop
BOS11:51 pmBoston Logan Intl
$363
Find similar
American Airlines
Jan 24
BOS8:47 pmBoston Logan Intl
17h 16m
2 stops
UVF3:03 pmCastries Hewanorra
Jan 31
UVF3:10 pmCastries Hewanorra
8h 46m
1 stop
BOS10:56 pmBoston Logan Intl
$367
Find similar
American Airlines
Jan 12
BOS5:15 amBoston Logan Intl
9h 47m
1 stop
UVF4:02 pmCastries Hewanorra
Jan 16
UVF5:02 pmCastries Hewanorra
18h 27m
2 stops
BOS10:29 amBoston Logan Intl
$368
Find similar

Delta flights from Boston to Castries

Our best Delta deals on Boston to Castries flight tickets
Delta
Mar 10
BOS5:35 amBoston Logan Intl
8h 29m
1 stop
UVF2:04 pmCastries Hewanorra
Mar 12
UVF3:24 pmCastries Hewanorra
18h 36m
1 stop
BOS10:00 amBoston Logan Intl
$485
Find similar
Delta
Dec 15
BOS5:40 amBoston Logan Intl
8h 56m
1 stop
UVF3:36 pmCastries Hewanorra
Dec 18
UVF4:56 pmCastries Hewanorra
17h 45m
1 stop
BOS9:41 amBoston Logan Intl
$716
Find similar
Delta
Dec 15
BOS5:40 amBoston Logan Intl
8h 56m
1 stop
UVF3:36 pmCastries Hewanorra
Dec 20
UVF4:53 pmCastries Hewanorra
9h 14m
1 stop
BOS1:07 amBoston Logan Intl
$746
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Castries 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 December 11, 2025.
Use the filters below to find and compare flights from Boston to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/24

6:17 pm-1:46 pm

1 stop18h 29m

Castries Hewanorra

Fri 1/30

4:06 pm-11:51 pm

1 stop8h 45m

$363

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/24

8:47 pm-3:03 pm

2 stops17h 16m

Castries Hewanorra

Sat 1/31

3:10 pm-10:56 pm

1 stop8h 46m

$367

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 1/12

5:15 am-4:02 pm

1 stop9h 47m

Castries Hewanorra

Wed 1/21

5:02 pm-11:21 am

2 stops19h 19m

$368

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Mon 3/2

12:44 pm-4:00 pm

1 stop26h 16m

Castries Hewanorra

Fri 3/6

5:00 pm-9:49 am

1 stop17h 49m

$372

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Fri 1/23

7:35 pm-1:46 pm

1 stop17h 11m

Castries Hewanorra

Wed 1/28

5:02 pm-10:01 am

1 stop17h 59m

$375

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 3/1

6:17 pm-4:00 pm

1 stop20h 43m

Castries Hewanorra

Wed 3/11

2:57 pm-8:44 am

2 stops17h 47m

$376

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 1/31

8:47 pm-1:46 pm

2 stops15h 59m

Castries Hewanorra

Sat 2/7

5:02 pm-10:31 am

2 stops18h 29m

$380

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-9:29 am

1 stop19h 19m

$381

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sat 2/28

5:30 pm-4:00 pm

1 stop21h 30m

Castries Hewanorra

Thu 3/5

4:25 pm-10:06 am

1 stop18h 41m

$384

BostonCastries

BOS - UVF

BOSUVF

Boston Logan Intl

Sun 1/25

8:51 pm-4:02 pm

2 stops18h 11m

Castries Hewanorra

Sun 2/1

5:02 pm-10:31 am

2 stops18h 29m

$385

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 Castries from

How to get the cheapest flight ticket from Boston to Castries

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 Castries?

The month of January is, on average, the cheapest month to fly to Castries from Boston, with most prices found around $527. The month of March is another great option to travel to Castries, with average flight prices from Boston averaging around $552.

What is the cheapest day to depart on your flight to Castries?

The cheapest day to depart from Boston to Castries is on a Monday when prices can be found for as low as $445. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $931. These prices are subject to change though, so be sure to set up a Price Alert for flights to Castries.

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

According to our data, the cheapest time of day to fly to Castries is in the afternoon. momondo users have found flights departing from Boston to Castries in the afternoon for as low as $607. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Castries are more costly in the morning, with an average ticket price of $671. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Boston Logan Intl to Castries Hewanorra flight route?

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

How far in advance should I book a flight to Castries?

You are more likely to see cheaper flights to Castries from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Castries for around $667 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Castries from Boston for as low as $538 on momondo.

What cabin class options are available on Boston Logan Intl to Castries Hewanorra flights?

There is only 1 cabin class available to choose from on Boston Logan Intl to Castries Hewanorra 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 Castries flights?

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

How have Boston to Castries flight prices changed over time?

When to book flights from Boston to Castries

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Castries according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Castries (BOS to UVF) flight deals and tips

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

Best Price Found

$526

Fastest flight time

4h 40m

Direct flights

Mon, Thu, Sat and Sun

Airports in Castries

1 airport
The best one-way flight to Castries from Boston in the past 72 hours is $526. The best round-trip flight deal from Boston to Castries found on momondo in the last 72 hours is $815.
The fastest flight from Boston to Castries takes 4h 40m
Direct flights go from Boston to Castries on Monday, Thursday, Saturday and Sunday. The only airline offering direct flights is JetBlue.
There is 1 airport in Castries. From Boston there are direct flights to Castries Hewanorra (UVF).
Search flight deals

  • How far is Boston Logan Intl to Castries Hewanorra by plane?

    The straight-line distance from Boston Logan Intl to Castries Hewanorra is 2047.6 mi. A reasonable flight in good conditions will take 4h 40m.

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

    Prices for flights from Boston Logan Intl Airport to Castries Hewanorra Airport are updated daily.

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

  • How old do you have to be to fly from Boston Logan Intl Airport to Castries Hewanorra Airport?

    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 Castries Hewanorra Airport.

  • What documentation or ID do you need to fly to Castries Hewanorra Airport?

    The travel and health documents you'll need for your trip to Castries Hewanorra Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Castries Hewanorra Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

  • What is the most popular airline from Boston to Castries?

Best airlines flying from Boston to Castries

Compare and see reviews for airlines that fly from Boston to Castries with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $357Free CancellationRating
7.9
8,005 reviews
Search Delta flights
JetBluePriceFrom $372Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
United AirlinesPriceFrom $385Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $389Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
Air CanadaPriceFrom $457Free CancellationRating
7.1
10,516 reviews
Search Air Canada flights

Traveling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Vieux Fort

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Castries for you.

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

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

How can momondo help me find flights from Boston to Castries?

momondo helps you find the best flight between Boston and Castries by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Boston to Castries flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Saint Lucia

Airports servicing Saint Lucia

Castries George F. L. Charle Airport