HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Castries

$3,801+ Cheap flights from Raleigh (RDU) to Castries (SLU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — SLU
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Raleigh to Castries with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Raleigh to Castries

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) to Castries (SLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$3,801
(Expedia)

Popular in

November

Cheapest in

February

Average price

$935
From Raleigh-Durham to Castries George F. L. Charle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Raleigh to Castries

Cheapest flights from Raleigh to Castries
Explore the most affordable flight options available from Raleigh to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Expedia deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/79:30 amRDU - SLU
2 stops35h 40mMultiple Airlines
Mon 11/104:35 pmSLU - RDU
2 stops53h 48mMultiple Airlines
Deal found 8/13$3,801

Cheapflights Fare Finder

 
Customize your flight search to find flights from Raleigh to Castries that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Raleigh to Castries that are best for you.

Fly from

Raleigh

Fly to

Castries

Route

Depart

Return

Price

RaleighCastries

RDU - SLU

RDUSLU

Raleigh-Durham

Fri 11/7

9:30 am-10:10 pm

2 stops35h 40m

Castries George F. L. Charle

Mon 11/10

4:35 pm-9:23 pm

2 stops53h 48m

$3,801

RaleighCastries

RDU - SLU

RDUSLU

Raleigh-Durham

Wed 11/26

3:15 pm-1:10 pm

2 stops20h 55m

Castries George F. L. Charle

Mon 12/1

4:35 pm-2:08 pm

2 stops46h 33m

$3,801

RaleighCastries

RDU - SLU

RDUSLU

Raleigh-Durham

Sat 1/17

3:15 pm-11:45 am

2 stops19h 30m

Castries George F. L. Charle

Wed 1/21

10:25 am-2:08 pm

2 stops52h 43m

$5,099

RaleighCastries

RDU - SLU

RDUSLU

Raleigh-Durham

Sat 1/31

3:15 pm-11:45 am

2 stops19h 30m

Castries George F. L. Charle

Wed 2/4

10:25 am-9:23 pm

2 stops35h 58m

$5,099

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Best time to book a flight from Raleigh to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Raleigh with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Raleigh to Castries

What is the cheapest month to book a flight from Raleigh to Castries?

Currently, August is the cheapest month in which you can book a flight from Raleigh to Castries (average of $525). Flying from Raleigh to Castries in July is currently the most expensive (average of $767). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from RDU to SLU?

Find hourly flight availability from Raleigh to Castries. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

When flying from Raleigh to Castries, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Castries

Get insights into the airlines that provide service to Castries. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Castries. Reviews last updated August 14, 2025.
Peruse reviews from past customers who have flown with American Airlines from Raleigh to Castries to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Crew

8.0

Comfort

7.2

Boarding

7.5

Food

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Crew

8.0

Comfort

7.2

Boarding

7.5

Food

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

Related info for your journey

Find useful and relevant information for your journey from Raleigh to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Raleigh to Castries round-trip?

    American Airlines, at $543, was found to be the cheapest airline from Raleigh to Castries.. American Airlines is currently priced 30% below the average price you’ll pay for this route.

  • Can I find deals for flights from Raleigh to Castries that include hotel bookings?

    Yes. In addition to deals on Raleigh to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Raleigh to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Raleigh to Castries.

  • Can I find deals for business class flights from Raleigh to Castries?

    Yes. Cheapflights offers flight deals from Raleigh to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Raleigh to Castries?

    Currently, August is the cheapest month in which you can book a flight from Raleigh to Castries (average of $525). Flying from Raleigh to Castries in July is currently the most expensive (average of $767). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Gros Islet
Rodney Bay
Marigot Bay

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Raleigh to Castries

Discover the top airline that operate flights from Raleigh to Castries. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$543Average$732FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.