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

One-Way flights

22 Jul	WestJet	direct
24 Jul	Air Canada
11 Jul	United	direct
16 Jul	Air Canada
16 Jul	WestJet	direct
24 Jul	United	direct
10 Jul	Frontier Airlines
03 Jul	Frontier Airlines
07 Jul	Alaska Airlines
07 Jul	WestJet	direct

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

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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Cheapest one-way flights from Denver to Calgary in July from $77

One-Way flights