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

Return flights

14 Jul - 17 Jul	WestJet	direct
20 Jul - 27 Jul	United	direct
28 Jul - 01 Aug	United	direct
15 Jul - 19 Jul	WestJet	direct
13 Jul - 19 Jul	United	direct
13 Jul - 20 Jul	United	direct
16 Jul - 23 Jul	WestJet	direct
18 Jul - 23 Jul	United	direct
18 Jul - 21 Jul	United	direct
11 Jul - 14 Jul	United	direct
11 Jul - 18 Jul	Frontier Airlines

Also check the deals for one-way 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.

Book a cheap hotel in Calgary

Cheap car rent in Calgary

Cheapest return flights from Denver to Calgary in July from $191

Return flights