Cheap flights from Calgary to Houston from C$ 186

If you don’t want to visit Houston George Bush Intcntl Airport in September, then you should wait until October to fly from Calgary, when ticket prices are also cheap, with an average price of C$ 272.

The cheapest day to depart on your flight to Houston George Bush Intcntl Airport is on a Thursday when prices can be found for as low as C$ 409. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 780. These prices are subject to change though, so be sure to set up a Price Alert for flights to Houston George Bush Intcntl Airport.

Flying to Houston George Bush Intcntl Airport from Calgary in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as C$ 360 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around C$ 860. 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 George Bush Intcntl flight prices

You are more likely to see cheaper flights to Houston George Bush Intcntl Airport from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston George Bush Intcntl Airport for around C$ 394 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston George Bush Intcntl Airport from Calgary for as low as C$ 235 on momondo.

Air Canada and Delta are the most popular carriers operating from Calgary to Houston George Bush Intcntl

WestJet, Air Canada and United Airlines are the top three most popular airlines that fly to Houston George Bush Intcntl Airport from Calgary according to our data. WestJet is the first choice among our users, with 87% of people opting to fly with this airline when travelling to Houston George Bush Intcntl Airport. Keep in mind that there are 5 different airlines that fly to Houston George Bush Intcntl Airport 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 139 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.

Friday 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, United Airlines has had the least delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

4 flights are operational daily from Calgary to Houston George Bush Intcntl Airport as of April 2026. The most popular departure time for this route is 1:00p.m., with 91% of flights per day taking off in the afternoon.

31 flights are operational weekly from Calgary to Houston George Bush Intcntl Airport as of April 2026. The most popular departure day for this route is Thu, with 26% of flights per week taking off on this day.