$220 Cheap Flights from San Juan (SJU) to Castries (SLU)

View $220 flight on Sat, Dec 27, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $220 for one-way flights and $484 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Caribbean Airlines
Wed, Jan 14 - Thu, Jan 15
SJU
San Juan
SLU
Castries
$484 Roundtrip, found 7 hours ago
$484
Roundtrip
found 7 hours ago
Select Caribbean Airlines flight, departing Wed, Jan 14 from San Juan to Castries, returning Thu, Jan 15, priced at $484 found 7 hours ago
Caribbean Airlines
Wed, Sep 10 - Thu, Sep 11
SJU
San Juan
SLU
Castries
$489 Roundtrip, found 3 days ago
$489
Roundtrip
found 3 days ago
Select Caribbean Airlines flight, departing Wed, Sep 10 from San Juan to Castries, returning Thu, Sep 11, priced at $489 found 3 days ago
Caribbean Airlines
Thu, Sep 11 - Fri, Sep 12
SJU
San Juan
SLU
Castries
$506 Roundtrip, found 3 days ago
$506
Roundtrip
found 3 days ago
Select Caribbean Airlines flight, departing Thu, Sep 11 from San Juan to Castries, returning Fri, Sep 12, priced at $506 found 3 days ago
Caribbean Airlines
Thu, Oct 23 - Fri, Oct 24
SJU
San Juan
SLU
Castries
$506 Roundtrip, found 12 hours ago
$506
Roundtrip
found 12 hours ago
Select Caribbean Airlines flight, departing Thu, Oct 23 from San Juan to Castries, returning Fri, Oct 24, priced at $506 found 12 hours ago
Caribbean Airlines
Thu, Oct 2 - Fri, Oct 3
SJU
San Juan
SLU
Castries
$516 Roundtrip, found 5 days ago
$516
Roundtrip
found 5 days ago
Select Caribbean Airlines flight, departing Thu, Oct 2 from San Juan to Castries, returning Fri, Oct 3, priced at $516 found 5 days ago
Caribbean Airlines
Wed, Nov 26 - Thu, Nov 27
SJU
San Juan
SLU
Castries
$520 Roundtrip, found 1 day ago
$520
Roundtrip
found 1 day ago
Select Caribbean Airlines flight, departing Wed, Nov 26 from San Juan to Castries, returning Thu, Nov 27, priced at $520 found 1 day ago
Caribbean Airlines
Wed, Sep 17 - Thu, Sep 18
SJU
San Juan
SLU
Castries
$524 Roundtrip, found 6 days ago
$524
Roundtrip
found 6 days ago
Select Caribbean Airlines flight, departing Wed, Sep 17 from San Juan to Castries, returning Thu, Sep 18, priced at $524 found 6 days ago
Caribbean Airlines
Wed, Sep 10 - Sun, Sep 14
SJU
San Juan
SLU
Castries
$527 Roundtrip, found 3 days ago
$527
Roundtrip
found 3 days ago
Select Caribbean Airlines flight, departing Wed, Sep 10 from San Juan to Castries, returning Sun, Sep 14, priced at $527 found 3 days ago
interCaribbean Airways
Mon, Feb 16 - Mon, Feb 23
SJU
San Juan
SLU
Castries
$858 Roundtrip, found 3 days ago
$858
Roundtrip
found 3 days ago
Select interCaribbean Airways flight, departing Mon, Feb 16 from San Juan to Castries, returning Mon, Feb 23, priced at $858 found 3 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 $732
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $732
Flights from San Juan (SJU) to Castries (SLU)
Origin airport
Luis Munoz Marin Intl.
Destination airport
George F. L. Charles
Airlines serving
Caribbean Airlines, interCaribbean Airways
Roundtrip price
$483
Distance
451 mi

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 January. 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 $220 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.

 

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 $220 or cheap return flight from $484 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 January, 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.

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*Available to One Key members.