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

One-Way flights

15 Jul	WestJet	direct
10 Jul	Air Canada
28 Jul	WestJet	direct
29 Jul	WestJet	direct
13 Jul	United	direct
14 Jul	United	direct
09 Jul	Air Canada
11 Jul	Air Canada
24 Jul	Air Canada
20 Jul	United	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 56€

One-Way flights