Cheap flights from Kalispell to Denver from $139

The cheapest month to fly to Denver from Kalispell is in October. Flight prices, which tend to average around $293, 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 June to fly from Kalispell, when ticket prices are also cheap, with an average price of $299.

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $464. 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 $646.

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $476. Flights in the morning are often more expensive with an average ticket price of $550.

Fly from Kalispell Glacier Park to Denver Intl for the best Kalispell Glacier Park - Denver Intl flight prices

You are more likely to see cheaper flights to Denver from Kalispell when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $343 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Kalispell for as low as $224 on momondo.

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

You could potentially save up to 53% on your flight if you consider stops on a Kalispell to Denver flight.

As of March 2026, prices for Kalispell to Denver flights are approximately 22% more expensive when compared to flights at the same time last year.

Alaska Airlines is the most popular carrier operating from Kalispell Glacier Park to Denver Intl

United Airlines, Frontier and Alaska Airlines are the top three most popular airlines that fly to Denver from Kalispell according to our data. United Airlines is the first choice among our users, with 88% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 4 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

The number of flights available between Kalispell and Denver is 1 per day as of March 2026. The most frequent departure time is 2:00PM, with 58% of daily flights leaving in the afternoon.

As of March 2026, there are 13 flights per week flying from Kalispell to Denver. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.