Cheap flights from Houston George Bush Intcntl Airport to Calgary from $155

The month of October is, on average, the cheapest month to fly to Calgary from Houston George Bush Intcntl Airport, with most prices found around $243. If you aren’t able to travel during the month of October, then book flights to Calgary from Houston George Bush Intcntl Airport during January instead. Flights to Calgary in January, while not as cheap as those in October, still average around $245.

The cheapest time of day to fly to Calgary is in the afternoon when flights can be purchased for as low as $330. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $382 on average. Flights to Calgary from Houston George Bush Intcntl Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Calgary from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Calgary for around $322 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Calgary from Houston George Bush Intcntl Airport for as low as $227 on momondo.

As of May 2026, prices for Houston George Bush Intcntl Airport to Calgary flights are approximately 2% more expensive when compared to flights at the same time last year.

United Airlines and Delta are the most popular carriers operating from Houston George Bush Intcntl to Calgary

WestJet, United Airlines and Delta are the top three most popular airlines that fly to Calgary from Houston George Bush Intcntl Airport according to our data. WestJet is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Calgary. Keep in mind that there are 4 different airlines that fly to Calgary on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% 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 129 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.

Tuesday 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, WestJet have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

The number of flights available between Houston George Bush Intcntl Airport and Calgary is 4 per day as of May 2026. The most frequent departure time is 2:00PM, with 52% of daily flights leaving at noon.

29 flights are operational weekly from Houston George Bush Intcntl Airport to Calgary as of May 2026. The most popular departure day for this route is Sun, with 21% of flights per week taking off on this day.