Cheap flights from Ontario to Colorado from C$ 227

The cheapest month to fly to Colorado from Region of Ontario is in September. Flight prices, which tend to average around C$ 673, are often lower during this time because this is during the off-season. If you don’t want to visit Colorado in September, then you should wait until May to fly from Region of Ontario, when ticket prices are also cheap, with an average price of C$ 686.

The cheapest day to depart on your flight to Colorado is on a Wednesday when prices can be found for as low as C$ 721. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Region of Ontario because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 908.

According to our data, the cheapest time of day to fly to Colorado is at noon. momondo users have found flights departing from Region of Ontario to Colorado at noon for as low as C$ 770. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the afternoon because they tend to be around C$ 782. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Toronto Pearson Intl to Denver Intl for the best Ontario - Colorado flight prices

You are more likely to see cheaper flights to Colorado from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around C$ 715 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Region of Ontario for as low as C$ 575 on momondo.

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

United Airlines, Delta, and American Airlines are the most popular carriers operating from Ontario to Colorado

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Colorado from Region of Ontario according to our data. Air Canada is the first choice among our users, with 68% of people opting to fly with this airline when travelling to Colorado. Keep in mind that there are 4 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

As of September 2026, 5 flights take off from Region of Ontario and land in Colorado each day. The most common flight departure time for this route is 6:00p.m., with 43% of daily flights taking off in the evening.

37 flights are operational weekly from Region of Ontario to Colorado as of September 2026. The most popular departure day for this route is Wed, with 24% of flights per week taking off on this day.