To save on the cost of your flight from Montana to Calgary, book at least 61 days before your planned departure. Booking around this time can save you about 26% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $336 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $361.
Due to multiple factors, expect to potentially pay more when booking in November. For low rates, February can be a great choice for travel to Calgary. Flights to Calgary from Montana in February are about $296 on average during February, but can be found for as low as $153.