Cheap flights from Illinois to Alberta from C$ 139

The month of January is, on average, the cheapest month to fly to Alberta from Illinois, with most prices found around C$ 291. If you aren’t able to travel during the month of January, then book flights to Alberta from Illinois during October instead. Flights to Alberta in October, while not as cheap as those in January, still average around C$ 296.

The cheapest day to depart on your flight to Alberta is on a Thursday when prices can be found for as low as C$ 221. This is often the case because there is less demand to fly during this day of the week. Flights from Illinois to Alberta on a Monday will generally be more expensive and average around C$ 388. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

According to our data, the cheapest time of day to fly to Alberta is in the evening. momondo users have found flights departing from Illinois to Alberta in the evening for as low as C$ 216. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Alberta are more costly in the afternoon, with an average ticket price of C$ 347. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Chicago O'Hare Intl to Calgary for the best Illinois - Alberta flight prices

You are more likely to see cheaper flights to Alberta from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Alberta for around C$ 386 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Alberta from Illinois for as low as C$ 324 on momondo.

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

As of March 2026, there are 3 flights per day flying from Illinois to Alberta. The most common time of day flights depart is 8:00a.m., with 91% of flights taking off at noon.

As of March 2026, there are 21 flights per week flying from Illinois to Alberta. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.