$384 Cheap Flights from Raleigh (RDU) to Castries (SLU)

View $384 flight on Mon, Feb 16, 2026Opens in a new window

Popular airlines from Raleigh-Durham International Airport (RDU) to George F. L. Charles Airport (SLU)

Cheap Flights from Raleigh to Castries (RDU-SLU)

Prices were available within the past 7 days and start at $384 for one-way flights and $977 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 18 - Sat, Nov 22
RDU
Raleigh
SLU
Castries
$977 Roundtrip, found 10 hours ago
$977
Roundtrip
found 10 hours ago
Select United flight, departing Tue, Nov 18 from Raleigh to Castries, returning Sat, Nov 22, priced at $977 found 10 hours ago

Find the cheapest month to fly from Raleigh (RDU) to Castries (SLU)

January is typically the cheapest month to fly

From $402 - $767 per traveler.

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 $685
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $685

Frequently asked questions

How much does a flight from Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU) cost?
Lock in a cheap one-way flight from $384 or cheap return flight from $977 from Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU) 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 Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU)?
The cheapest month to fly from RDU to SLU is November, when demand is low. Off-peak season is often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU)?
To find the cheapest airline flying from RDU to SLU, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU)?
You'll have to take a flight with a layover when traveling from Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU). 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 RDU to SLU?
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 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 Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU)?
Select a flight from Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 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 Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU) last-minute?
Booking your ticket from RDU to SLU shortly before your journey is typically more expensive. However, if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a RDU to SLU flight and hotel package?
You'll generally save money by securing a RDU to SLU flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your ideal flights and accommodations, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to George F. L. Charles Airport (SLU)?
It's generally possible to cancel or reschedule your RDU to SLU flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Raleigh - Durham Intl.
Destination airport
George F. L. Charles
Roundtrip price
$976
Distance
1869 mi

Book with confidence

Raleigh to Castries Flights

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

 

The best time to book a flight from Raleigh to Castries

Sunday is one of the best days to book for cheap flights from Raleigh 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 Raleigh 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 Raleigh to Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from $384 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 Raleigh 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 Raleigh 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.

 

Raleigh to Castries Flights

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*Available to One Key members.