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Cheap flights from Houston to Castries

Compare Houston to Castries flight deals

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

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Flight deals from Houston to Castries

Looking for a cheap last-minute deal or the best return flight from Houston to Castries? If you want to travel next month, return fares start from $909. Find the lowest prices on one-way and return tickets right here.
Castries.$389 per passenger.Departing Tue, 1 Dec.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston Hobby on Tue, 1 Dec, arriving in St Lucia Hewanorra.Price includes taxes and charges.From $389, select.
Castries.$389 per passenger.Departing Wed, 5 Aug.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston Hobby on Wed, 5 Aug, arriving in St Lucia Hewanorra.Price includes taxes and charges.From $389, select.
Castries.$454 per passenger.Departing Sat, 11 Jul.One-way flight with United.Outbound indirect flight with United, departs from Houston George Bush Intercntl. on Sat, 11 Jul, arriving in St Lucia Hewanorra.Price includes taxes and charges.From $454, select.
Castries.$479 per passenger.Departing Sat, 4 Apr.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Houston George Bush Intercntl. on Sat, 4 Apr, arriving in St Lucia Hewanorra.Price includes taxes and charges.From $479, select.
Castries.$616 per passenger.Departing Fri, 6 Mar.One-way flight with United.Outbound indirect flight with United, departs from Houston George Bush Intercntl. on Fri, 6 Mar, arriving in St Lucia Hewanorra.Price includes taxes and charges.From $616, select.
Castries.$695 per passenger.Departing Sun, 15 Nov.One-way flight with Delta.Outbound indirect flight with Delta, departs from Houston Hobby on Sun, 15 Nov, arriving in St Lucia Hewanorra.Price includes taxes and charges.From $695, select.

Find the cheapest month to fly from Houston to Castries

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.
Mar
from $616
Apr
from $479
May
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Jun
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Jul
from $454
Aug
from $389
Sep
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Oct
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Nov
from $695
Dec
from $389
Jan
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Feb
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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.

St Lucia Vigie

1km from central Castries
Closest
Search flights

St Lucia Hewanorra

31km from central Castries
Cheapest
from $389
Search flights

Houston to Castries: Flight information

The things to know before you go.
Cheapest flight found$389
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 return flight from Houston to Castries is $855. 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 $855.
As of March 2026, there are no flights flying from Houston to Castries.
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 30.5 km away from the centre of Castries. We've found flights into this airport from $855.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to Castries on Saturday, 26 September 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 March, the average temperature is usually around 26°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.
The cheapest airline that flies to Castries is Delta .

Flying from Houston to Castries: what you need to know

  • Start your travel planning by considering where you'll catch your flight from Houston to Castries. George Bush Intercontinental Airport (IAH) and William P. Hobby Airport (HOU) are Houston's main airports.

  • George F. L. Charles Airport (SLU) and Hewanorra Airport (UVF) are Castries's primary gateways.

  • The timezone in Castries is UTC-4, which is one hour ahead of Houston.

  • For a stress-free start to your trip, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to catch your Houston to Castries flight.

  • During popular months such as July, you'll want to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead for international flights whenever you're flying during high season in general.

How to find the cheapest flights from Houston to Castries

  • Don't wait until the last minute. You're more likely to get cheap Houston to Castries flights if you book early. Airlines often have some great early bird rates.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll show you the lowest price across every month when searching for your plane ticket from Houston to Castries.

  • There's no need to check back in every day to find out if prices have dropped when you create a Price Alert. We'll tell you the moment a better deal comes up on cheap flights from Houston to Castries.

  • Tailor your flights using filters. Choose your arrival and departure times, airlines and total journey duration. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' Houston to Castries flights.

Flying from Houston

George Bush Intercontinental Airport (IAH)

  • We make it a breeze to book a Houston to Castries flight with a stopover. To see all your options leaving from George Bush Intercontinental Airport, uncheck 'Direct flights only.' Then, pick a flight with a stop long enough to tour your chosen city. Major stopovers include:

    • O'Hare International Airport (ORD)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Miami International Airport (MIA)

  • Located around 21 kilometres from the centre of Houston, IAH can be reached in about 20 minutes by car, depending on traffic. The journey by public transport is roughly 50 minutes.

  • Searching for a convenient hotel close to George Bush Intercontinental Airport? If you're catching an early flight from Houston to Castries, these stays will have you sleeping moments from check-in:

  • When it comes to George Bush Intercontinental Airport's on-time performance, 78.42% of flights stick to their scheduled arrival time.

  • You'll find IAH at 16930 JFK Boulevard.

William P. Hobby Airport (HOU)

  • Think about adding a stop at Hartsfield-Jackson Atlanta International Airport (ATL). It's a major stopover on a Houston to Castries flight out of William P. Hobby Airport. Use a long layover to get out and explore, or take advantage of a quick break to grab a coffee at an airport cafe.

  • With public transport, you can travel from central Houston to HOU in around 1 hour 40 minutes. The terminal is roughly 16 kilometres away. Driving will take you about 20 minutes.

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

  • Most flights that depart William P. Hobby Airport get to their destination right on cue. It boasts a strong on-time performance rate of 81%.

  • HOU is located at 7800 Airport Boulevard.

Arriving in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) is approximately 2 kilometres from central Castries. If you're catching a cab or a ride-share, the drive takes around 5 minutes.

  • It usually takes 40 minutes to get there on public transport.

  • The last thing you want is a lengthy journey to your hotel if you're landing late on a flight from Houston to Castries. Reserve one of these accommodation options near SLU instead:

  • Get your adventure underway by picking up a George F. L. Charles Airport rental car. Grab a set of wheels from Drive A Matic, Final Rentals or Sixt and explore beyond Castries's usual tourist stops.

  • Reserving your ride from George F. L. Charles Airport around one week in advance increases your chances of getting a good deal.

Hewanorra Airport (UVF)

  • Hewanorra Airport (UVF) is roughly 31 kilometres from central Castries. Once you've hopped off your flight from Houston to Castries, it takes approximately 1 hour 10 minutes to reach the heart of the city in a cab or ride-share.

  • After your flight from Houston to Castries, unwind at a hotel near UVF. These are some comfortable accommodation options that'll help you switch to relaxation mode:

  • Forget about public transport timetables or waiting in a long cab line. Grab a Hewanorra Airport rental car and let your trip unfold on your terms. Compare offers from Drive A Matic, Sixt and Final Rentals.

  • Snap up a deal by securing your ride from UVF one week ahead of time. You can also expect to have a greater range of vehicles.

Best time to go to Castries

  • February is the quietest month for flights from Houston to Castries, while June is the most popular. Find the best time to visit Castries based on whether you want a bustling atmosphere or a more laid-back vibe.

  • Before locking in your Houston to Castries tickets, consider what kind of weather works for you. September is the warmest month in Castries, with temperatures ranging from 26ºC (79ºF) to 30ºC (86ºF).

  • If you like travelling in cooler conditions, search for a cheap flight from Houston to Castries in February when temperatures average between 24ºC (75ºF) and 28ºC (82ºF).

More about Castries

  • Start your Castries trip right by choosing the perfect place to stay. Once you've booked your flight from Houston to Castries, check out our range of hotels including:

  • All great adventures should include some sightseeing. Derek Walcott Square, Morne Fortune and Immaculate Conception Church are attractions you won't want to skip in Castries.

Explore more of Saint Lucia

  • Vieux Fort is just one of the many cities in Saint Lucia waiting to be explored once you've taken in the sights of Castries. Around 32 kilometres to the south, popular attractions include Maria Islands Museum, Anse Des Sables Beach and YoungFaith Park.

  • Any journey through Saint Lucia wouldn't be as memorable without a stop in Micoud. Josephine Splash Park and Ti Rocher Community Park are just a couple of highlights in this well-known destination, which is around 24 kilometres south-east of Castries.

Plan the rest of your trip from Houston to Castries

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