Cheap flights from Calgary to Denver from $165

The cheapest month to fly to Denver from Calgary is in October. Flight prices, which tend to average around $278, 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 August to fly from Calgary, when ticket prices are also cheap, with an average price of $284.

The cheapest day to depart on your flight to Denver is on a Sunday when prices can be found for as low as $503. 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 Monday, with ticket prices averaging around $564.

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $449. Flights in the afternoon are often more expensive with an average ticket price of $608.

Fly from Calgary to Denver Intl for the best Calgary - Denver Intl flight prices

You are more likely to see cheaper flights to Denver from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $333 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Calgary for as low as $283 on momondo.

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

No. A direct flight is the cheapest option for a flight between Calgary to Denver.

As of October 2026, prices for Calgary to Denver flights are approximately 52% more expensive when compared to flights at the same time last year.

Delta is the most popular carrier operating from Calgary to Denver Intl

United Airlines, WestJet and Air Canada are the top three most popular airlines that fly to Denver from Calgary according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 3 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

As of October 2026, 3 flights take off from Calgary and land in Denver each day. The most common flight departure time for this route is 6:00AM, with 63% of daily flights taking off at noon.

The number of flights available between Calgary and Denver is 25 per week as of October 2026. The most frequent departure day is Thu, with 28% of weekly flights leaving on this day.