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

Return flights

29 Dec - 13 Jan	Air France
28 Dec - 11 Jan	Vueling Airlines
28 Dec - 10 Jan	KLM
27 Dec - 11 Jan	Air France
27 Dec - 29 Dec	Air France
27 Dec - 09 Jan	Air France
27 Dec - 07 Jan	Air France
28 Dec - 07 Jan	KLM
28 Dec - 06 Jan	KLM
31 Dec - 06 Jan	Air France
31 Dec - 11 Jan	Virgin Atlantic
27 Dec - 30 Dec	WestJet	direct
28 Dec - 31 Dec	Vueling Airlines
27 Dec - 29 Dec	WestJet	direct
29 Dec - 31 Dec	Air Canada
28 Dec - 28 Dec	Air France
28 Dec - 31 Dec	Lufthansa	direct
31 Dec - 31 Dec	WestJet	direct
29 Dec - 31 Dec	WestJet	direct
28 Dec - 28 Dec	WestJet	direct

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 562€

Return flights