Cheap Flights from Boston to Castries from £133️ (BOS-SLU)

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Latest Flight Deals from Boston to Castries

Book one-way or return flights from Boston to Castries from as little as £134. Choose from the popular airlines below and book your flight today!

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Searching for the best last minute flight from Boston to Castries? Find one-way or return flights that are affordable and fit your itinerary.

Trip.com monitors the ticket fares of flights from Boston to Castries. Stay updated on price trends and snag the best deals for your upcoming trip.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Airlines Flying from Boston to Castries

View airlines operating flights from Boston to Castries. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

American Airlines

From £134

United Airlines

From £152

Spirit Airlines

From £175

Jetblue Airways

From £186

Copa Airlines

From £234

Lynx Air

From £240

Air Canada

From £261

Porter Airlines

From £275

Delta Air Lines

From £324

Virgin Atlantic

From £466

ANA airlines

Find more flights and airlines

Alternative Routes from Boston to Castries

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Boston to Castries.

Cheapest
BOS
05:30
8h 15m
1 transfer
UVF
13:45
General Edward Lawrence Logan International Airport - Hewanorra Airport
Mon, Apr 29American Airlines
£134
BOS
15:29
20h 1m
2 transfer
SLU
11:30
General Edward Lawrence Logan International Airport - George F. L. Charles Airport
Thu, May 23Spirit Airlines
£230
BOS
15:29
20h 1m
2 transfer
SLU
11:30
General Edward Lawrence Logan International Airport - George F. L. Charles Airport
Thu, May 23Spirit Airlines
£230
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How do I find the cheapest flights?

When are flight tickets from Boston (BOS) to Castries (SLU) the cheapest?
Airlines adjust prices for flights from Boston to Castries based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much are flights from Boston (BOS) to Castries (SLU) cost?
According to Trip.com's data, the lowest price is around £514.
How long is the flight from Boston (BOS) to Castries (SLU)?
It takes about 4 hours 59 minutes to fly from Boston (BOS) to Castries (SLU).
What is the transportation method from the main airport to downtown in Castries?
- The distance from George F. L. Charles Airport to downtown is about 1km, by taxi about 20 minutes.
- The distance from Hewanorra Airport to downtown is about 30km, by taxi about 50 minutes.
What are the most popular airlines that fly from Boston (BOS) to Castries (SLU)?
Airlines with flights from Boston (BOS) to Castries (SLU): Jetblue Airways.
What's the most popular airline for direct flights from Boston (BOS) to Castries (SLU)?
Jetblue Airways operates 1 direct flights from Boston (BOS) to Castries (SLU).
How many airports in Castries (SLU)?
There are 2 airport(s) in Castries (SLU): George F. L. Charles Airport and Hewanorra Airport.

How to find a cheap flight from Boston to Castries

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Boston to Castries. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

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Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

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Flight Information from Boston to Castries

Cheapest direct flight price	£133
Cheapest return ticket price	£606
Cheapest month	March
Peak season for travel	July
Flight distance	3,295.52km
Average flight time	4 hours 59 minutes
Popular airline	American Airlines