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

Return flights

03 Dec - 10 Dec	WestJet	direct
10 Dec - 17 Dec	WestJet	direct
16 Dec - 24 Dec	WestJet	direct
14 Dec - 19 Dec	WestJet	direct
24 Dec - 28 Dec	WestJet	direct
26 Dec - 01 Jan	WestJet	direct
15 Dec - 05 Jan	WestJet	direct
23 Dec - 28 Dec	WestJet	direct
21 Dec - 22 Dec	WestJet	direct
26 Dec - 02 Jan	WestJet	direct
21 Dec - 04 Jan	WestJet	direct
29 Dec - 02 Jan	WestJet	direct
20 Dec - 21 Dec	Air Canada
20 Dec - 20 Dec	Air Canada
27 Dec - 04 Jan	Air Canada

Also check the deals for one-way flights from London 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 London to Calgary in December from $203

Return flights