Cheap flights from Houston to Calgary from C$ 140

The cheapest month to fly to Calgary from Houston is in May. Flight prices, which tend to average around C$ 307, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Calgary from Houston during September instead. Flights to Calgary in September, while not as cheap as those in May, still average around C$ 355.

Our data shows that the cheapest Houston to Calgary flights are usually those with departure times in the afternoon. Our users have found flights to Calgary in the afternoon for as low as C$ 363. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 481 on average. Flights to Calgary from Houston at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Calgary from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to Calgary for around C$ 404 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Calgary from Houston for as low as C$ 235 on momondo.

Historically, on average around 16% of flights between Houston and Calgary have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

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

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

According to our data, WestJet has had the least delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

As of February 2026, there are 5 flights per day flying from Houston to Calgary. The most common time of day flights depart is 9:00a.m., with 59% of flights taking off at noon.

36 flights are operational weekly from Houston to Calgary as of February 2026. The most popular departure day for this route is Thu, with 22% of flights per week taking off on this day.