Cheap Flights from Austin-Bergstrom to Castries

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

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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 foundج.م.‏ 26,616
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 ج.م.‏ 29,423. 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 ج.م.‏ 29,423.
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 ج.م.‏ 29,423.
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, 28 January 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.

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

  • Austin-Bergstrom International Airport is located in Austin. Based in the UTC-4 timezone, Castries is one hour ahead of Austin.

  • Give yourself enough time to get on your AUS to Castries flight. It's generally best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Longer lines at check-in and security are more likely if you're jetting off during high season, so allow some extra breathing room. A good rule of thumb for peak periods? Arrive up to four hours ahead for international flights and two hours for domestic departures.

  • Think about adding a stopover to potentially score a cheaper flight ticket from AUS to Castries. Simply uncheck 'Direct flights only' during your search. Take a detour (and maybe pocket some savings) by stopping at one of these popular airports:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Charlotte Douglas International Airport (CLT)

    • Miami International Airport (MIA)

  • Travelling from central Austin to AUS takes about 3 hours 25 minutes by public transport. If you drive, ride-share or take a cab, you'll cover the 11 kilometres in 25 minutes or so, depending on traffic conditions.

  • Booked an early flight from Austin-Bergstrom International Airport to Castries? Avoid rushing to the airport (and get some extra shut-eye) by choosing one of these stays close to AUS:

  • Austin-Bergstrom International Airport maintains a strong on-time record, reducing the likelihood of delays. Departures from AUS arrive at their destination as scheduled 81.23% of the time.

  • You'll find AUS at 3600 Presidential Blvd.

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

  • ج.م.‏ 26,616 is currently the lowest price for a one-way Austin-Bergstrom International Airport to Castries flight. A return flight ticket starts at ج.م.‏ 29,423. These fares can change depending on demand and availability.

  • Don't wait until the last moment. You're more likely to land cheap flights from AUS to Castries if you book early. Airlines often offer some amazing early bird discounts.

  • If you have flexibility with your trip dates, use the 'Whole month' tool. It'll find the lowest price across each month when looking for your Austin-Bergstrom International Airport to Castries ticket.

  • Snapping up a cheap flight from AUS to Castries couldn't be easier with Price Alerts. Simply set up one of these automatic notifications and we'll get in touch when a deal gets even better.

  • Choose your ideal departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Austin-Bergstrom International Airport to Castries by 'Best,' 'Cheapest' or 'Fastest.'

Airports in Castries

George F. L. Charles Airport (SLU)

  • The distance from George F. L. Charles Airport (SLU) to central Castries is roughly 3 kilometres. It'll take you about 5 minutes to reach the centre driving.

  • If you're using public transport, expect a journey time of about 40 minutes.

  • The last thing you need is a long journey to your hotel if you're getting in late on a flight from Austin-Bergstrom International Airport to Castries. Check in to one of these accommodation options near SLU instead:

  • Go wherever you want, whenever you want with a George F. L. Charles Airport rental car. Pick up a set of wheels from Drive A Matic, Final Rentals or Sixt and chase adventure across Castries and beyond.

  • For the lowest price, book your vehicle from George F. L. Charles Airport about one week in advance of your flight from AUS to Castries.

Hewanorra Airport (UVF)

  • After your flight from Austin-Bergstrom International Airport to Castries has hit the runway, you can get to the city centre in around 1 hour 10 minutes by car. Central Castries is roughly 56 kilometres from Hewanorra Airport (UVF).

  • There are some comfortable places to rest your head close to UVF. Settle in and get cosy after your AUS to Castries flight at one of these perfectly located options:

  • Forget about public transport schedules or waiting forever for a cab. Grab a Hewanorra Airport rental car and let your trip unfold on your terms. Check out the availability and rates from Drive A Matic, Sixt and Final Rentals.

  • Lock in the lowest price by securing your ride from UVF one week in advance. You'll also have access to a bigger selection of vehicles.

Best time to go to Castries

  • Carefully consider your travel dates before securing your flight from Austin-Bergstrom International Airport to Castries. The city buzzes in peak season, but rates are generally higher and attractions can get crowded. Go to Castries in the off-season if you like a quieter vibe.

  • Before booking an Austin-Bergstrom International Airport to Castries flight ticket, think about the weather you're most comfortable in. September is the warmest month in Castries, with temperatures ranging from 26ºC to 30ºC.

  • Search for cheap tickets from AUS to Castries in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 24ºC and 28ºC on average.

More about Castries

  • Once you've booked 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 see and do in this city it can be tricky to know where to begin. Morne Fortune, Derek Walcott Square and Immaculate Conception Church are top 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.