$225 Cheap Flights from San Juan (SJU) to Castries (SLU)

View $225 flight on Sat, Nov 8, 2025Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU)

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Cheap Flights from San Juan to Castries (SJU-SLU)

Prices were available within the past 7 days and start at $225 for one-way flights and $489 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Caribbean Airlines
Wed, Apr 29 - Thu, Apr 30
SJU
San Juan
SLU
Castries
$489 Roundtrip, found 1 day ago
$489
Roundtrip
found 1 day ago
Select Caribbean Airlines flight, departing Wed, Apr 29 from San Juan to Castries, returning Thu, Apr 30, priced at $489 found 1 day ago
Caribbean Airlines
Thu, Apr 30 - Fri, May 1
SJU
San Juan
SLU
Castries
$516 Roundtrip, found 1 day ago
$516
Roundtrip
found 1 day ago
Select Caribbean Airlines flight, departing Thu, Apr 30 from San Juan to Castries, returning Fri, May 1, priced at $516 found 1 day ago
Caribbean Airlines
Thu, Nov 13 - Fri, Nov 14
SJU
San Juan
SLU
Castries
$525 Roundtrip, found 5 days ago
$525
Roundtrip
found 5 days ago
Select Caribbean Airlines flight, departing Thu, Nov 13 from San Juan to Castries, returning Fri, Nov 14, priced at $525 found 5 days ago
Caribbean Airlines
Wed, Nov 12 - Thu, Nov 13
SJU
San Juan
SLU
Castries
$531 Roundtrip, found 5 days ago
$531
Roundtrip
found 5 days ago
Select Caribbean Airlines flight, departing Wed, Nov 12 from San Juan to Castries, returning Thu, Nov 13, priced at $531 found 5 days ago
Caribbean Airlines
Sat, Nov 8 - Wed, Nov 12
SJU
San Juan
SLU
Castries
$538 Roundtrip, found 23 hours ago
$538
Roundtrip
found 23 hours ago
Select Caribbean Airlines flight, departing Sat, Nov 8 from San Juan to Castries, returning Wed, Nov 12, priced at $538 found 23 hours ago
Caribbean Airlines
Sat, May 2 - Sun, May 10
SJU
San Juan
SLU
Castries
$539 Roundtrip, found 23 hours ago
$539
Roundtrip
found 23 hours ago
Select Caribbean Airlines flight, departing Sat, May 2 from San Juan to Castries, returning Sun, May 10, priced at $539 found 23 hours ago
Caribbean Airlines
Sun, May 24 - Sat, May 30
SJU
San Juan
SLU
Castries
$542 Roundtrip, found 21 hours ago
$542
Roundtrip
found 21 hours ago
Select Caribbean Airlines flight, departing Sun, May 24 from San Juan to Castries, returning Sat, May 30, priced at $542 found 21 hours ago
interCaribbean Airways
Mon, Apr 13 - Mon, Apr 20
SJU
San Juan
SLU
Castries
$858 Roundtrip, found 6 days ago
$858
Roundtrip
found 6 days ago
Select interCaribbean Airways flight, departing Mon, Apr 13 from San Juan to Castries, returning Mon, Apr 20, priced at $858 found 6 days ago

Alternative airports near Castries

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Hewanorra Intl. UVF. Cheapest option available. Average driving time to city center is 53 minutes. Flights from $576
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $576

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU) cost?
Get a cheap one-way flight from $225 or cheap return flight from $489 from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU)?
The cheapest month to fly from SJU to SLU is April, when there's less demand. Off-peak months are often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SJU to SLU flight.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU)?
Direct flights from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SJU to SLU?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU)?
To avoid potential delays on the Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU) route, travel before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU) last-minute?
Holding off until just before your trip to book a flight from SJU to SLU generally means paying more. While you might find some last-minute discounts, there's no guarantee. Keep your travel plans flexible to boost your chances of getting a bargain.
Is it cheaper to book a SJU to SLU flight and hotel package?
Compared with arranging flights and hotels separately, booking a SJU to SLU flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place takes the hassle out of travel planning. Just secure your flights and choose from our wide range of stays, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to George F. L. Charles Airport (SLU)?
If you reserved your SJU to SLU flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Origin airport
Luis Munoz Marin Intl.
Destination airport
George F. L. Charles
Airlines serving
Caribbean Airlines, interCaribbean Airways
Roundtrip price
$488
Distance
451 mi

Book with confidence

San Juan to Castries Flights

The cheapest times to fly from San Juan to Castries

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Juan to Castries are during the month of April. You can find some of the cheapest flights from San Juan to Castries with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Juan to Castries

Sunday is one of the best days to book for cheap flights from San Juan to Castries: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Juan to Castries

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Juan to Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from $225 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Juan to Castries flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Juan to Castries airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Juan to Castries Flights

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*Available to One Key members.