Cheap flights from Calgary to Houston from $138

The month of November is, on average, the cheapest month to fly to Houston from Calgary, with most prices found around $55. The month of September is another great option to travel to Houston, with average flight prices from Calgary averaging around $72.

Our data shows that the cheapest Calgary to Houston flights are usually those with departure times in the afternoon. Our users have found flights to Houston in the afternoon for as low as $247. Try not to purchase tickets at noon because they tend to be around $526. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Calgary to Houston George Bush Intcntl for the best Calgary - Houston flight prices

You are more likely to see cheaper flights to Houston from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $283 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from Calgary for as low as $176 on momondo.

Air Canada, United Airlines, and Delta are the most popular carriers operating from Calgary to Houston

WestJet, United Airlines and Air Canada are the top three most popular airlines that fly to Houston from Calgary according to our data. WestJet is the first choice among our users, with 84% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 3 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between Calgary and Houston have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Friday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

The number of flights available between Calgary and Houston is 6 per day as of May 2026. The most frequent departure time is 1:00PM, with 51% of daily flights leaving in the afternoon.

As of May 2026, there are 45 flights per week flying from Calgary to Houston. The most common day of the week flights depart is Fri, with 20% of flights taking off on this day.