$185 Flights from Houston (HOUA) to Castries (SLUA)

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Flight deals from Houston to Castries

Looking for a cheap last-minute deal or the best round-trip flight from Houston to Castries? If you want to travel next month, round-trip fares start from $467. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Houston to Castries from $185 one-way

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

Alternative Houston to Castries routes

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

Houston to Castries: Flight information

The things to know before you go.
Cheapest flight found$185
Cheapest month to flyAugust

Finding cheap flights from Houston 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 Houston to Castries is $465. 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 Houston to Castries. But we found flights with one or more stops from $465.
There are no flights flying from Houston to Castries, as of August 2026.
The cheapest month to fly from Houston to Castries is usually September.
If you're flying from Houston, the cheapest airport near Castries is St Lucia Hewanorra – which is 18.9 miles away from the center of Castries. We've found flights to this airport from $465.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to Castries on Thursday, September 17, 2026.
No airlines currently offer direct flights between Houston 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 August, 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.
The cheapest airline that flies to Castries is Air Canada.

Traveling from Houston to Castries: what you need to know

  • Get your vacation planning started by considering where you'll take off for your flight from Houston to Castries. Houston George Bush Intercntl. Airport (IAH) and Houston Hobby Airport (HOU) are the main airports in Houston.

  • When it comes to working out where to land in Castries, St Lucia Hewanorra Airport (UVF) and St Lucia Vigie Airport (SLU) are the chief entry points.

  • Castries's timezone is UTC-4, which makes Castries two hours ahead of Houston.

  • To ensure you get on your Houston to Castries flight, leave plenty of time to check in and find your gate. Arriving two hours before international departures and an hour before domestic flights is the general travel rule.

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

How to find the cheapest flights from Houston to Castries

  • Don't leave everything to the last moment. You're more likely to get cheap Houston to Castries flights if you book in advance. Airlines often have some amazing early bird rates.

  • Getting cheap plane tickets from Houston to Castries is easy if you're flexible with your dates. Try using the 'Whole month' search tool to see the lowest fares across the month and pick up an incredible deal.

  • You don't need to search every day to see if fares have dropped when you set up a Price Alert. We'll let you know as soon as there's a better deal on cheap flights from Houston to Castries.

  • Save money on your Houston to Castries flight with the help of our filters. Select your preferred duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Flying from Houston

Houston George Bush Intercntl. Airport (IAH)

  • A stopover is the ideal opportunity to break up your trip — and perhaps even explore a different city. When searching for Houston to Castries flights leaving from Houston George Bush Intercntl. Airport, deselect the 'Direct flights only' box to see where you can visit along the way. Here are some popular options to consider:

    • Chicago O'Hare International Airport (ORD)

    • Atlanta Hartsfield-Jackson Airport (ATL)

    • Miami International Airport (MIA)

  • IAH is around 16 miles from central Houston. If you're ride-sharing, catching a cab or driving from the center, it'll take 30 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the journey time to be around 1 hour 10 minutes.

  • Searching for a handy hotel near Houston George Bush Intercntl. Airport? If you're boarding an early flight from Houston to Castries, these accommodation options will have you sleeping moments from your departure lounge:

  • Of all flights departing from Houston George Bush Intercntl. Airport, 79% touch down on time at their destination.

  • IAH is located at 16930 JFK Boulevard.

Houston Hobby Airport (HOU)

  • Take some time to stretch your legs during your Houston to Castries flight with a stopover. Atlanta Hartsfield-Jackson Airport (ATL) is a popular option between Houston Hobby Airport and Castries.

  • HOU is around 10 miles from central Houston. It'll take 20 minutes or so to get to the airport by car from the city center. Public transport takes roughly 50 minutes.

  • Want to enjoy an extra night away before catching your flight from Houston to Castries? Relax in a hotel near Houston Hobby Airport before your break officially starts. Stay at one of these accommodation options:

  • Looking at how often flights stay on schedule, Houston Hobby Airport has an on-time arrival performance of 79%.

  • HOU is located at 7800 Airport Boulevard.

Arriving in Castries

St Lucia Hewanorra Airport (UVF)

  • St Lucia Hewanorra Airport (UVF) to central Castries takes about 1 hour 30 minutes by car. The center is roughly 19 miles away.

  • If you're taking public transport, expect a journey time of roughly 2 hours.

  • Consider staying in a hotel near UVF if you're coming in on a late flight from Houston to Castries. Pick one of these options and avoid the hassle of a long transfer:

  • Go wherever you want, whenever you want with a St Lucia Hewanorra Airport rental car. Book your wheels from Drive A Matic, Sixt or Final Rentals and chase adventure across Castries and beyond.

  • Reserving your ride from St Lucia Hewanorra Airport around one week in advance gives you the best chance of locking in a great deal.

St Lucia Vigie Airport (SLU)

  • St Lucia Vigie Airport (SLU) is about 1 mile from central Castries. Once you've disembarked your flight from Houston to Castries, it takes approximately 10 minutes to get to the heart of the city in a cab or ride-share.

  • The journey will take about 15 minutes on public transport.

  • There are some comfortable places to lay your head close to SLU. Unwind after your Houston to Castries flight at one of these well-located options:

  • The quickest way to get to where you're going is with a St Lucia Vigie Airport rental car. Grab your wheels from Drive A Matic, Final Rentals or Sixt and get going in the blink of an eye.

  • Snap up the best price by reserving your ride from SLU one week ahead of time. You can also expect to have a wider selection of vehicles.

Best time to go to Castries

  • December is the most popular month for flights from Houston to Castries. To avoid the crowds, visit Castries in September.

  • The warmest month in Castries is September, with temperatures ranging between 79ºF and 86ºF. Lock in your Houston to Castries ticket then if that's your ideal forecast.

  • If you'd rather travel in cooler conditions, search for a cheap flight from Houston to Castries in February when temperatures average between 75ºF and 82ºF.

More about Castries

  • When it comes to looking for somewhere to rest your head, you'll find the top stays in Castries right here. Explore these hotels once you've booked your flight from Houston to Castries:

  • Vigie Beach and Malabar Beach are just the start of the leading attractions to put on your Castries to-do list. Continue your sightseeing adventures at Morne Fortune.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.