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Cheap flights from Boston to Castries 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 Castries 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 Castries

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
Find Deal
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
Find Deal
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
Find Deal
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
Find Deal
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
Find Deal
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 Castries

Our best JetBlue deals on Boston to Castries 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
Find similar

American Airlines flights from Boston to Castries

Our best American Airlines deals on Boston to Castries 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 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 September 15, 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

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 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 $470. The month of March is another great option to travel to Castries, with average flight prices from Boston averaging around $543.

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

The cheapest day to depart from Boston to Castries is on a Thursday when prices can be found for as low as $461. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $771. 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 morning. momondo users have found flights departing from Boston to Castries in the morning for as low as $591. 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 at noon, with an average ticket price of $621. Departure times at noon 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 $648 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 $505 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?

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

How have Boston to Castries flight prices changed over time?

As of September 2025, prices for Boston to Castries flights are approximately 31% more expensive when compared to flights at the same time last year.

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

$288

Fastest flight time

4h 44m

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 $288. The best round-trip flight deal from Boston to Castries found on momondo in the last 72 hours is $702.
The fastest flight from Boston to Castries takes 4h 44m
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 near Castries: 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 47m.

  • 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
JetBluePriceFrom $361Free 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

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