Cheapest return flights from Calgary to Denver in October from $112

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

Return flights

06 Oct - 10 Oct WestJet direct
11 Oct - 17 Oct United direct
18 Oct - 25 Oct United direct
10 Oct - 12 Oct WestJet direct
01 Oct - 05 Oct Air Canada
03 Oct - 06 Oct Air Canada
28 Oct - 02 Nov Air Canada
15 Oct - 17 Oct United direct
03 Oct - 06 Oct United direct
17 Oct - 20 Oct Delta
28 Oct - 05 Nov Delta
27 Oct - 04 Nov Delta
28 Oct - 02 Nov United direct
02 Oct - 05 Oct WestJet
28 Oct - 05 Nov United direct
27 Oct - 04 Nov United direct

Also check the deals for one-way flights from Calgary to Denver in October.

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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