$740 Cheap Flights from Castries (SLU) to St. Thomas (STT)

View $740 flight on Sat, Dec 27, 2025Opens in a new window

Popular airlines from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT)

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Cheap Flights from Castries to St. Thomas (SLU-STT)

Prices were available within the past 7 days and start at $740 for one-way flights and $1,321 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Windward Island Airways International
Sat, Nov 15 - Sun, Nov 16
SLU
Castries
STT
St. Thomas
$1,321 Roundtrip, found 6 days ago
$1,321
Roundtrip
found 6 days ago
Select Windward Island Airways International flight, departing Sat, Nov 15 from Castries to St. Thomas, returning Sun, Nov 16, priced at $1,321 found 6 days ago

Alternative airports near St. Thomas

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

Select flight to Terrance B. Lettsome Intl. EIS. Cheapest option available. Flights from $572
EIS
Terrance B. Lettsome Intl.
Cheapest
Flights from $572

Frequently asked questions

How much does a flight from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT) cost?
Snag a cheap one-way flight from $740 or cheap return flight from $1,321 from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT)?
November is the least expensive month to fly from SLU to STT. Traveling during an off-peak travel window is often the key to finding a great deal.
What is the cheapest airline that flies from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SLU to STT flight.
How many flights per day from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT)?
You'll need to take a flight with a layover when traveling from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from SLU to STT?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT)?
To avoid possible delays on the George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT) route, fly before 3 PM. Departures after this hour are 22% more likely to be 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 George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT) last-minute?
Holding off until right before your break to book your flight from SLU to STT generally means paying more. While you may come across some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to boost your chances of getting a bargain.
Is it cheaper to book a SLU to STT flight and hotel package?
You'll generally save money by booking a SLU to STT flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After selecting your preferred accommodations and flights, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from George F. L. Charles Airport (SLU) to Cyril E. King Airport (STT)?
In most instances, you're able to cancel or reschedule your SLU to STT flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
George F. L. Charles
Destination airport
Cyril E. King
Roundtrip price
$1,321
Distance
398 mi

Book with confidence

Book with confidence

Castries to St. Thomas Flights

The cheapest times to fly from Castries to St. Thomas

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 Castries to St. Thomas are during the month of November. You can find some of the cheapest flights from Castries to St. Thomas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Castries to St. Thomas

Sunday is one of the best days to book for cheap flights from Castries to St. Thomas: 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 Castries to St. Thomas

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 Castries to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $740 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 Castries to St. Thomas 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 Castries to St. Thomas 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.

 

Castries to St. Thomas Flights

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*Available to One Key members.