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

Return flights

02 Dec - 11 Dec	SWISS
04 Dec - 11 Dec	SWISS
02 Dec - 07 Dec	Air Transat
02 Dec - 08 Dec	Air Transat
04 Dec - 09 Dec	Air Transat
03 Dec - 09 Dec	Vueling Airlines
01 Dec - 08 Dec	Vueling Airlines
04 Dec - 10 Dec	Air Transat
09 Dec - 18 Jan	Vueling Airlines
01 Dec - 07 Dec	Air Transat
28 Dec - 27 Jan	Vueling Airlines
11 Dec - 10 Jan	Vueling Airlines
27 Dec - 15 Jan	Vueling Airlines
05 Dec - 14 Dec	Air Transat
28 Dec - 17 Jan	easyJet
24 Dec - 12 Jan	Vueling Airlines
22 Dec - 09 Jan	easyJet
23 Dec - 17 Jan	easyJet
25 Dec - 10 Jan	Vueling Airlines
25 Dec - 17 Jan	Vueling Airlines

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.

Book a cheap hotel in Calgary

Cheap car rent in Calgary

Cheapest return flights from London to Calgary in December from $444

Return flights