Cheap flights from Ontario to Denver from $156

The cheapest month to fly to Denver from Region of Ontario is in October. Flight prices, which tend to average around $430, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in October, then you should wait until November to fly from Region of Ontario, when ticket prices are also cheap, with an average price of $452.

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $529. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $624.

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $521. Flights in the afternoon are often more expensive with an average ticket price of $568.

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

You are more likely to see cheaper flights to Denver from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $495 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Region of Ontario for as low as $408 on momondo.

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

The number of flights available between Region of Ontario and Denver is 13 per day as of August 2026. The most frequent departure time is 6:00PM, with 46% of daily flights leaving at noon.

As of August 2026, 91 flights take off from Region of Ontario and land in Denver each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.