
Popular airlines from Jacksonville International Airport (JAX) to George F. L. Charles Airport (SLU)
- American Airlines
American Airlines
- United
United
- Southwest Airlines
Southwest Airlines
- Delta
Delta
- Frontier Airlines
Frontier Airlines
- JetBlue Airways
JetBlue Airways
- Alaska Airlines
Alaska Airlines
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Cheap Flights from Jacksonville to Castries (JAX-SLU)
Prices were available within the past 7 days and start at $551 for one-way flights and $1,335 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Jacksonville (JAX) to Castries (SLU)
August is typically the cheapest month to fly
Graph displaying average flight prices per month
Alternative airports near Castries
Prices were available within the past 7 days. Prices and availability are subject to change.
Origin airport | Jacksonville Intl. |
Destination airport | Hewanorra Intl. |
Roundtrip price | $435 |
Distance | 1754 mi |
Jacksonville to Castries Flights
The cheapest times to fly from Jacksonville 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 Jacksonville to Castries are during the month of November. You can find some of the cheapest flights from Jacksonville to Castries with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Jacksonville to Castries
Sunday is one of the best days to book for cheap flights from Jacksonville 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 Jacksonville 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 Jacksonville to Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from $551 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 Jacksonville 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 Jacksonville 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.
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Top Routes from Jacksonville
- Jacksonville to Chicago (JAX - ORD)
- Jacksonville to Newark Liberty Intl. Airport (JAX - EWR)
- Jacksonville to Chicago (JAX - MDW)
- Jacksonville to Los Angeles (JAX - LAX)
- Jacksonville to Norfolk (JAX - ORF)
- Jacksonville to Washington (JAX - DCA)
- Jacksonville to Miami (JAX - MIA)
- Jacksonville to New York (JAX - LGA)
- Jacksonville to Boston (JAX - BOS)
- Jacksonville to Denver (JAX - DEN)
- Jacksonville to Washington (JAX - IAD)
- Jacksonville to New York (JAX - JFK)
Top Routes to Castries
- Chicago to Castries (ORD - SLU)
- Argyle to Castries (SVD - SLU)
- Newark Liberty Intl. Airport to Castries (EWR - SLU)
- Miami to Castries (MIA - SLU)
- Bridgetown to Castries (BGI - SLU)
- Detroit to Castries (DTW - SLU)
- Boston to Castries (BOS - SLU)
- Fort Lauderdale to Castries (FLL - SLU)
- Charlotte to Castries (CLT - SLU)
- Minneapolis to Castries (MSP - SLU)
- Washington to Castries (IAD - SLU)
- New York to Castries (JFK - SLU)
Top Routes from Jacksonville
- American Airlines Jacksonville to Chicago
- United Jacksonville to Newark Liberty Intl. Airport
- Delta Jacksonville to Chicago
- JetBlue Airways Jacksonville to Los Angeles
- American Airlines Jacksonville to Washington
- American Airlines Jacksonville to Miami
- Delta Jacksonville to New York
- JetBlue Airways Jacksonville to Boston
- American Airlines Jacksonville to Denver
- Delta Jacksonville to Washington
Top Routes to Castries
- interCaribbean Airways Argyle to Castries
- Caribbean Airlines Miami to Castries
- interCaribbean Airways Bridgetown to Castries
- Caribbean Airlines Fort Lauderdale to Castries
- Caribbean Airlines New York to Castries
- Caribbean Airlines Georgetown to Castries
- Caribbean Airlines Port of Spain to Castries
- Caribbean Airlines Georgetown to Castries
- Caribbean Airlines Orlando to Castries
Top Flight Destinations
Vieux Fort
Nearby Airports
- Jacksonville Executive at Craig Airport (CRG)
- Northeast Florida Regional Airport (UST)
- Golden Isles Airport (BQK)
- Gainesville Regional Airport (GNV)
- Valdosta Regional Airport (VLD)
- Daytona Beach Intl. Airport (DAB)
- Leesburg Intl. Airport (LEE)
- Savannah - Hilton Head Intl. Airport (SAV)
- Orlando Sanford Intl. Airport (SFB)
- Hilton Head Island Airport (HHH)
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