Cheap Flights from Houston George Bush Intercntl. to Castries

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Flight deals from Houston George Bush Intercntl. Airport to Castries

Looking for a cheap last-minute deal or the best return flight from Houston George Bush Intercntl. Airport to Castries? If you want to travel next month, return fares start from R 12,537. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Houston George Bush Intercntl. to Castries

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

Alternative Houston George Bush Intercntl. to Castries routes

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

Houston to Castries: Flight information

The things to know before you go.
Cheapest flight foundR 4,938
Cheapest month to flyApril

Finding cheap flights from Houston George Bush Intercntl. 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 George Bush Intercntl. to Castries is R 11,756. 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 George Bush Intercntl. to Castries. But we found flights with one or more stops from R 11,756.
As of March 2026, there are no flights flying from Houston George Bush Intercntl. to Castries.
The cheapest month to fly from Houston George Bush Intercntl. to Castries is usually May.
If you're flying from Houston George Bush Intercntl. 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 R 11,756.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Houston George Bush Intercntl. Airport to Castries on Saturday, 9 May 2026.
No airlines currently offer direct flights between Houston George Bush Intercntl. 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 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.
Currently, Delta offers the cheapest flight tickets to Castries.

Flying from George Bush Intercontinental Airport (IAH) to Castries: what you need to know

  • Castries is one hour ahead of Houston, where George Bush Intercontinental Airport is located. Castries observes the UTC-4 timezone.

  • To avoid rushing for your IAH to Castries flight, allow plenty of time for things like baggage drop and finding your gate. Arriving two hours before international departures and one hour before domestic flights is the standard rule.

  • If you're heading away during a bank holiday or another peak period, give yourself more time. A good general rule is two hours before domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

  • Stopovers are the ideal opportunity to break up your trip and perhaps even tick a new city off your list. When searching for flight tickets from IAH to Castries, uncheck the 'Direct flights only' box to see where you can stop along the way. Popular options include:

    • O'Hare International Airport (ORD)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Miami International Airport (MIA)

  • IAH is about 21 kilometres from central Houston. If you're driving, ride-sharing or catching a cab from the centre, it'll take you 20 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the trip time to be around 50 minutes.

  • Catching an early flight from George Bush Intercontinental Airport to Castries? Avoid the last-minute rush to the airport (and sneak in some extra snooze time) by choosing one of these stays close to IAH:

  • 78.42% of flights that take off from George Bush Intercontinental Airport make it to their destination on time.

  • IAH's address is 16930 JFK Boulevard.

How to find the cheapest flights from George Bush Intercontinental Airport (IAH) to Castries

  • R 4,938 is the cheapest price we've found for a one-way George Bush Intercontinental Airport to Castries flight. A round-trip flight ticket right now is R 11,756. Depending on the availability when you book, these fares could change.

  • Don't wait until the last minute. You're more likely to pick up cheap flights from IAH to Castries if you book early. Airlines often offer some excellent early bird rates.

  • Landing cheap tickets from George Bush Intercontinental Airport to Castries is easier if you can be flexible with your travel plans. Try using the 'Whole month' search tool to get the lowest prices across the month and bag an epic deal.

  • Picking up a cheap flight from IAH to Castries is a breeze with Price Alerts. Simply create one of these automatic notifications and we'll notify you as soon as a new discount appears.

  • Pick your ideal departure and arrival times, number of stops and airlines with our filters. Then, sort the results for your flight from George Bush Intercontinental Airport to Castries by 'Cheapest,' 'Fastest' or 'Best.'

Airports in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) is around 3 kilometres from central Castries. If you're catching a cab or a ride-share, the drive takes about 5 minutes.

  • Travelling to the centre on public transport takes about 40 minutes.

  • The last thing you want is a long journey to your hotel if you're arriving on a late flight from George Bush Intercontinental Airport to Castries. Check in to one of these accommodation options near SLU instead:

  • Get on the fast track to adventure 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.

  • To secure the lowest price, book your ride from George F. L. Charles Airport about one week ahead of your flight from IAH to Castries.

Hewanorra Airport (UVF)

  • Central Castries is about 56 kilometres from Hewanorra Airport (UVF). After your flight from George Bush Intercontinental Airport to Castries has touched down and you've made your way through the terminal, expect a drive of about 1 hour 10 minutes.

  • Hang up the 'Do not disturb' sign and relax at a hotel near UVF. Here are a few options where you can check in after your IAH to Castries flight:

  • Drive A Matic, Sixt and Final Rentals make picking up a Hewanorra Airport rental car simple. These reliable suppliers are located in or around the terminal and will have you on your way in a heartbeat.

  • Lock in the best price by booking 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

  • Carefully consider your trip dates before booking your flight from George Bush Intercontinental Airport to Castries. The city buzzes during peak season, but hotel rates are typically higher and top attractions can be busy. Plan your trip to Castries in the off-season if you want a quieter vibe.

  • Lock in a George Bush Intercontinental Airport to Castries flight ticket with a departure in September if you want to experience the city during its warmest month. Expect temperatures to range from 26ºC (79ºF) to 30ºC (86ºF).

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

More about Castries

  • After booking your flight from George Bush Intercontinental Airport to Castries, find a hotel that offers the right mix of comfort and location. Make one of these accommodation options your base for exploring Castries:

  • All great holidays should include a little sightseeing. Morne Fortune, Derek Walcott Square and Immaculate Conception Church are must-visits when exploring Castries.

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