C$772 Cheap Flights from Austin-Bergstrom to Castries

Compare Austin-Bergstrom to Castries flight deals

Find the cheapest month or even day of the year to fly to Castries

Book the best Castries fare with no extra fees

Find the cheapest month to fly from Austin-Bergstrom to Castries

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 March.

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 foundC$772
Cheapest month to flyMarch

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 return flight from Austin-Bergstrom to Castries is C$853. 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 C$853.
As of December 2025, there are no flights flying from Austin-Bergstrom to Castries.
The cheapest month to fly from Austin-Bergstrom to Castries is usually January.
If you're flying from Austin-Bergstrom Airport, the cheapest airport near Castries is St Lucia Hewanorra – which is 30.5 km away from the centre of Castries. We've found flights into this airport from C$853.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Austin-Bergstrom Airport to Castries on Wednesday, January 28, 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 December, the average temperature is usually around 27°C. September is typically the warmest month in Castries, when it usually averages around 28°C. You can expect the least rain in February. The coldest month is February, with temperatures averaging 25°C. The rainiest month is October.
Currently, Delta offers the cheapest flight tickets to Castries.

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

  • The timezone in Castries is UTC-4. The city is 1 hour ahead of Austin, where Austin-Bergstrom International Airport is located.

  • To ensure you get on your flight from AUS to Castries, allow plenty of time to navigate the airport and find your gate. Turning up two hours before international departures and one hour before domestic flights is the standard rule.

  • If you're going away during a popular month like July, arrive at the terminal even earlier. You'll want to arrive up to four hours before an international flight and two hours ahead of domestic departures. Security lines will be longer during peak periods like summer, Christmas and New Year.

  • We make it simple to plan a flight from AUS to Castries with a stopover. To see all the options, deselect 'Direct flights only.' Next, select a flight offering a stop long enough to see the sights of the city of your choice. Major stopovers include:

    • Charlotte Douglas International Airport (CLT)

    • Miami International Airport (MIA)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

  • If you hold a passport from United States and are travelling to Saint Lucia for tourism purposes, you won't need a visa. However, entry and visa requirements may differ based on the length of your trip and are subject to change. For the latest information, contact your destination's nearest consulate or embassy before booking a cheap ticket from Austin-Bergstrom International Airport to Castries.

  • Located around 19 kilometres from central Austin, AUS can be reached in approximately 25 minutes by car, depending on traffic. The same journey on public transport takes roughly 3 hours and 24 minutes.

  • Planning to catch an early flight from Austin-Bergstrom International Airport to Castries? Avoid the stress of rushing to the airport (and sneak in some extra snooze time) by picking one of these stays near AUS:

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

  • The best price we've seen for a one-way ticket from Austin-Bergstrom International Airport to Castries is C$772. The cheapest price for a return flight is C$853. Remember fares may change due to availability at the time of booking.

  • To find cheap tickets from AUS to Castries, book as early as you can. Airlines usually offer their best fares when flights are first made available.

  • The 'Whole month' search function shows you the cheapest tickets from Austin-Bergstrom International Airport to Castries throughout the month. It's a great way to snap up a bargain if your plans aren't set in stone.

  • Sign into your online account or use the app to set up a Price Alert. We'll get in touch straight away if there's a cheaper deal on this route. It's simple to do, and it'll save you from searching for cheap tickets from AUS to Castries every day.

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

Airports in Castries

Hewanorra Airport (UVF)

George F. L. Charles Airport (SLU)

  • The centre of Castries is around 3 kilometres from George F. L. Charles Airport (SLU). After your flight from Austin-Bergstrom International Airport to Castries has touched down and you've made your way out of the airport, expect a drive of about 6 minutes.

  • You can also travel using public transport, which will take about 40 minutes.

  • Hang the 'Do not disturb' sign on your door and relax at a hotel near SLU. Here are a few options where you can kick back after your flight from AUS to Castries:

Best time to go to Castries

  • July is the busiest month to hop on a flight from Austin-Bergstrom International Airport to Castries while May is the quietest. To work out the best time to visit Castries, consider your preferred travel pace and style.

  • The warmest month in Castries is September, with temperatures ranging between 26ºC and 30ºC. Book your flights from Austin-Bergstrom International Airport to Castries in this month if you enjoy this type of weather.

  • If you want to travel in cooler conditions, lock in a cheap flight from AUS to Castries in February when temperatures average between 24ºC and 28ºC.

More about Castries

  • When it comes to looking for somewhere to lay your head, you'll find the best stays in Castries right here. Browse these hotels after you've booked your flight from Austin-Bergstrom International Airport to Castries:

  • There are so many things to see and do in this city it can be hard to figure out where to begin. Derek Walcott Square, Morne Fortune and Immaculate Conception Church are top attractions which should be on any good Castries itinerary.

Complete your Castries trip with a car rental

  • Finding you a cheap flight from Austin-Bergstrom International Airport to Castries isn't our only cool trick. Check out our car rentals in Castries and have more freedom to explore. We search for deals from trusted car rental providers and put them all in one place. You can instantly compare offers and then book with no fees.

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