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

Return flights

30 Dec - 06 Jan	WestJet
30 Dec - 05 Jan	WestJet
28 Dec - 08 Jan	WestJet	direct
31 Dec - 06 Jan	WestJet	direct
26 Dec - 05 Jan	WestJet
26 Dec - 02 Jan	Air Canada
24 Dec - 31 Dec	Volaris
27 Dec - 03 Jan	Viva
26 Dec - 02 Jan	WestJet	direct
24 Dec - 28 Dec	Frontier Airlines
30 Dec - 06 Jan	Delta	direct
25 Dec - 28 Dec	WestJet
24 Dec - 31 Dec	United	direct
21 Dec - 24 Dec	WestJet
21 Dec - 28 Dec	WestJet
23 Dec - 25 Dec	United
23 Dec - 25 Dec	United	direct
21 Dec - 28 Dec	WestJet	direct
21 Dec - 24 Dec	WestJet	direct
27 Dec - 02 Jan	Air Canada

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 436€

Return flights