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

Return flights

28 Oct - 30 Oct	Air Canada
31 Oct - 01 Nov	WestJet
25 Oct - 01 Nov	WestJet
26 Oct - 02 Nov	WestJet
23 Oct - 30 Oct	Frontier Airlines
23 Oct - 27 Oct	Frontier Airlines
30 Oct - 02 Nov	Frontier Airlines
24 Oct - 25 Oct	Spirit Airlines
25 Oct - 01 Nov	Air Canada	direct
30 Oct - 02 Nov	Air Canada	direct
24 Oct - 26 Oct	Frontier Airlines
24 Oct - 25 Oct	United	direct
28 Oct - 30 Oct	WestJet	direct
23 Oct - 27 Oct	United	direct
23 Oct - 30 Oct	WestJet	direct
24 Oct - 26 Oct	United	direct

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

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 return flights from Houston to Calgary in October from 255€

Return flights