Cheap flights from Calgary to Houston from $136

The month of September is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Calgary, with most prices found around $182. If you are unable to visit Houston George Bush Intcntl Airport during the month of September, then departing from Calgary during the month October is also very affordable. Most momondo users find prices during this month for around $208.

The cheapest day to depart from Calgary to Houston George Bush Intcntl Airport is on a Thursday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Thursday will often find tickets for as low as $294. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Monday is $450.

Our data shows that the cheapest Calgary to Houston George Bush Intcntl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Houston George Bush Intcntl Airport in the afternoon for as low as $203. Try not to purchase tickets at noon because they tend to be around $479. 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 $282 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 $157 on momondo.

There are 4 cabin classes available to choose from on Calgary to Houston George Bush Intcntl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

WestJet and Air Canada 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 79% of people opting to fly with this airline when traveling to Houston George Bush Intcntl Airport. Keep in mind that there are 4 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 13% 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 133 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 11% of their flights experiencing any sort of delay.

The number of flights available between Calgary and Houston George Bush Intcntl Airport is 5 per day as of March 2026. The most frequent departure time is 1:00PM, with 81% of daily flights leaving in the afternoon.

As of March 2026, there are 37 flights per week flying from Calgary to Houston George Bush Intcntl Airport. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.