The cheapest times to fly from SLU to IAH are

  • January 8th to February 11th
  • March 5th to July 1st (except the weeks of March 12th, April 2nd, and April 9th)
  • October 15th to November 11th (except the week of October 22nd)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SLU to IAH is mid March. Prices can be as high as $1219 for Saturday flights during early to mid December, or as low as $721 for Tuesday flights around mid March.


When to Fly to Houston

Flying from St. Lucia (SLU) to Houston, TX (IAH) will usually cost between $744 to $1033 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid March with an average ticket price of $759. Due to high demand the most expensive time to fly is early to mid December, with an average price of $1042. Planning your trip to low-cost times can easily save you $283 on economy flights and even more on first-class flights. Generally, any price below $801 can be considered a good price for a round-trip SLU to IAH flight.

See below for a graph of average weekly prices for the SLU to IAH route. All prices are for round-trip tickets in USD.

SLU to IAH Flight Prices

Compared to other flights, the SLU to IAH flight is cheaper than the average and costs less than the average flight leaving from Saint Lucia. The average price per mile (for a direct flight) is $0.2, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to IAH, and Friday the cheapest day to fly back into SLU. Saturdays are the most expensive days to fly to Houston, and Sundays are the most expensive days to return to Saint Lucia. Selecting flights on the least expensive days could save you up to $42 (4%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $817. Return trip prices are from the IAH to SLU flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SLU to IAH can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 5 hour 23 minutes may not be realistic.


Flight Questions Answered

Still have questions about flying from SLU to IAH? We’ve got answers.

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Air Canada, Air France, American, Caribbean Airlines, COPA, Delta, LIAT, United, and potentially more during busy seasons.

How far away is it from George Bush Intercontinental/Houston Airport to George F Charles Airport?

The distance between the two airports is roughly 2447 miles or 3938 kilometers.

How long does it take to fly from SLU to IAH?

The real-world flight time for a nonstop SLU to IAH flight is about 5 hour 23 minutes.

How many flights go between St. Lucia and Houston, TX?

It depends on the day of the week and the date, but a typical day might have around 11 available flights from SLU to IAH.


Airport Location Info


Departing Airport

Origination code SLU
Origination airport name George F Charles Airport
City St. Lucia
Country St Lucia
Latitude 14
Longitude -61

Return Airport

Destination code IAH
Destination airport name George Bush Intercontinental/Houston Airport
City Houston, TX
Country the United States
Latitude 30
Longitude -95.3


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.