$270 Flights from Austin-Bergstrom (AUS) to Castries (SLUA)

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Flight deals from Austin-Bergstrom to Castries

Looking for a cheap last-minute deal or the best round-trip flight from Austin-Bergstrom Airport to Castries? If you want to travel next month, round-trip fares start from $637. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Austin-Bergstrom to Castries from $270 one-way

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Austin-Bergstrom to Castries flights are currently cheapest in July.

Alternative Austin-Bergstrom to Castries routes

Looking for the cheapest, fastest or easiest route from Austin-Bergstrom to Castries? You could fly into the following airports instead.

Austin to Castries: Flight information

The things to know before you go.
Cheapest flight found$270
Cheapest month to flyJuly

Finding cheap flights from Austin-Bergstrom to Castries: Frequently asked questions

There are 2 airports in Castries: St Lucia Vigie and St Lucia Hewanorra.
The best price we found for a round-trip flight from Austin-Bergstrom to Castries is $640. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Austin-Bergstrom to Castries. But we found flights with one or more stops from $637.
There are no flights flying from Austin-Bergstrom to Castries, as of June 2026.
The cheapest month to fly from Austin-Bergstrom to Castries is usually July.
If you're flying from Austin-Bergstrom Airport, the cheapest airport near Castries is St Lucia Hewanorra – which is 19.0 miles away from the center of Castries. We've found flights to this airport from $640.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Austin-Bergstrom Airport to Castries on Thursday, July 9, 2026.
No airlines currently offer direct flights between Austin-Bergstrom Airport and Castries. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Castries but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Castries is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 82°F. September is typically the warmest month in Castries, when it usually averages around 83°F. You can expect the least rain in February. The coldest month is February, with temperatures averaging 77°F. The rainiest month is October.
Currently, Air Canada offers the cheapest flight tickets to Castries.

Traveling from Austin-Bergstrom International Airport (AUS) to Castries: what you need to know

  • Castries is two hours ahead of Austin, where Austin-Bergstrom International Airport is located. Castries observes the UTC-4 timezone.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. That way, you can comfortably catch your AUS to Castries flight.

  • During popular months like July, you'll want to get to the airport earlier than usual. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're traveling during a peak period in general.

  • We make it simple to book plane tickets from AUS to Castries with a stopover. To see the options, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to explore the city of your choice. Major stopovers include:

    • Atlanta Hartsfield-Jackson International Airport (ATL)

    • Charlotte Douglas International Airport (CLT)

    • Miami International Airport (MIA)

  • AUS is around 7 miles from central Austin. If you're ride-sharing, catching a cab or driving from the center, it'll take you 20 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 45 minutes.

  • Want a hassle-free start to your journey? Stay near AUS. Whether you've booked an early flight from Austin-Bergstrom International Airport to Castries or want to avoid feeling rushed, these hotels are just the thing:

  • Of the flights that depart from Austin-Bergstrom International Airport, 77% land on schedule at their destination.

  • You'll find AUS at 3600 Presidential Blvd.

How to find the cheapest flights from Austin-Bergstrom International Airport (AUS) to Castries

  • The lowest price we've seen for a one-way Austin-Bergstrom International Airport to Castries flight is $270. The cheapest price for a return flight is $637. Bear in mind fares may change due to availability at the time of booking.

  • To pick up cheap flights from AUS to Castries, book in advance. Airlines generally offer their most competitively priced fares when tickets are first released.

  • The 'Whole month' tool will show you the cheapest tickets from Austin-Bergstrom International Airport to Castries across every month. It's a great way to snap up a bargain if your travel plans aren't set in stone.

  • Snapping up a cheap flight from AUS to Castries is a breeze with Price Alerts. All you need to do is set up one of these automatic notifications and we'll let you know as soon as a new discount appears.

  • Tailor your flights with filters. Choose your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Cheapest' or 'Best' flights from Austin-Bergstrom International Airport to Castries.

Airports in Castries

St Lucia Hewnorra International Airport (UVF)

  • St Lucia Hewnorra International Airport (UVF) is around 45 miles from the center of Castries. If you're grabbing a cab or a ride-share, the drive takes roughly 1 hour 30 minutes.

  • It typically takes 2 hours if you're traveling by public transport.

  • Consider staying in a hotel near UVF if you have a late flight from Austin-Bergstrom International Airport to Castries. Select one of these options and make your arrival easier:

  • Reserving your vehicle from St Lucia Hewnorra International Airport about one week ahead of your flight from AUS to Castries can help you secure the lowest rate.

Castries George F. L. Charles Airport (SLU)

  • Central Castries is located around 2 miles from Castries George F. L. Charles Airport (SLU). After your flight from Austin-Bergstrom International Airport to Castries has landed and you've navigated your way to arrivals, the drive should take about 10 minutes.

  • If you travel by public transport, you'll reach the center in 15 minutes or so.

  • Following your AUS to Castries flight, rest your head at a hotel near SLU. These are some great accommodation options that'll help you get into relaxation mode:

  • Get what you want, not just what's left over. Reserving your ride from SLU one week in advance often means lower prices and a greater range of vehicles.

Best time to go to Castries

  • It's time to choose your dates for your flight from Austin-Bergstrom International Airport to Castries. February is the busiest month to visit Castries. If you want a quieter atmosphere, go in September.

  • The warmest month in Castries is September, with temperatures ranging between 79ºF and 86ºF. Lock in your Austin-Bergstrom International Airport to Castries plane ticket then if that's your definition of good weather.

  • Search for cheap tickets from AUS to Castries in February if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between 75ºF and 82ºF on average.

More about Castries

  • After booking your flight from Austin-Bergstrom International Airport to Castries, choose a hotel that puts you where you want to be. Make one of these options your base for exploring Castries:

  • There are so many things to explore in this city it can be difficult to know where to start. Malabar Beach, Vigie Beach and Morne Fortune are leading attractions which should be on any well-planned Castries itinerary.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.