Cheapest one-way flights from Denver to Calgary in September from 38€

AirHint found the following cheapest one-way flights from Denver (DEN) to Calgary (YYC) in September 2025 (see full year).

One-Way flights

28 Sep WestJet direct
27 Sep Frontier Airlines
25 Sep Frontier Airlines
24 Sep Frontier Airlines
20 Sep Frontier Airlines
19 Sep Frontier Airlines
18 Sep Frontier Airlines
25 Sep WestJet direct
27 Sep United direct
24 Sep United direct

Also check the deals for return flights from Denver to Calgary in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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