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

Return flights

11 Dec - 17 Dec	WestJet	direct
08 Dec - 11 Dec	WestJet	direct
12 Dec - 16 Dec	WestJet	direct
11 Dec - 15 Dec	WestJet	direct
25 Dec - 31 Dec	WestJet	direct
25 Dec - 30 Dec	WestJet	direct
17 Dec - 02 Jan	WestJet	direct
24 Dec - 30 Dec	WestJet	direct
30 Dec - 06 Jan	WestJet	direct
21 Dec - 24 Dec	Spirit Airlines
26 Dec - 02 Jan	WestJet	direct
21 Dec - 24 Dec	WestJet	direct
28 Dec - 04 Jan	Spirit Airlines
28 Dec - 04 Jan	WestJet	direct

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

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 December from $153

Return flights