Find Frontier Airlines(F9) flights from Denver to Calgary

At the moment, you can catch a nonstop flight from Denver to Calgary with the following airlines, including: United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 2 hours 35 minutes to fly from Denver to Calgary.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Denver to Calgary is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 24 flight per week flying from Denver to Calgary. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA720 (19:25) United Airlines: S/M/T/W/T/F/S -- UA2459 (12:02)

The cheapest months to fly from Denver to Calgary is September, when demand for travel is lower.

After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Denver to Calgary on December 27, 2025 with United Airlines, with prices starting at RUB 6,804.

You can land at any one of the following hubs in Calgary, with Denver International Airport to Calgary International Airport (DEN-YYC) is by far the most common option on this route: Calgary International Airport (YYC).

The time difference between Calgary and Denver is 0h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.