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

Return flights

22 Dec - 30 Dec	easyJet
23 Dec - 30 Dec	Ryanair
23 Dec - 11 Jan	Ryanair
15 Dec - 09 Jan	Ryanair
23 Dec - 04 Jan	Ryanair
22 Dec - 09 Jan	Ryanair
06 Dec - 13 Dec	Ryanair
21 Dec - 28 Dec	easyJet
22 Dec - 05 Jan	Ryanair
04 Dec - 11 Dec	Ryanair
21 Dec - 29 Dec	easyJet
02 Dec - 06 Dec	Ryanair
03 Dec - 15 Dec	Ryanair
22 Dec - 29 Dec	easyJet
05 Dec - 13 Dec	Ryanair
13 Dec - 11 Jan	Ryanair
11 Dec - 10 Jan	Ryanair
20 Dec - 24 Jan	Ryanair
15 Dec - 06 Jan	Ryanair
23 Dec - 06 Jan	Ryanair

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 $637

Return flights