AirHint found the following cheapest return flights from London (LTN) to Toronto (YYZ) in December 2025 (see full year).

Return flights

05 Dec - 12 Dec	easyJet
12 Dec - 12 Jan	Ryanair
01 Dec - 07 Dec	Ryanair
03 Dec - 08 Dec	Ryanair
17 Dec - 15 Jan	Ryanair
17 Dec - 16 Jan	Ryanair
01 Dec - 08 Dec	Ryanair
15 Dec - 11 Jan	Ryanair
15 Dec - 09 Jan	Ryanair
12 Dec - 16 Dec	Ryanair
11 Dec - 07 Jan	easyJet
03 Dec - 07 Dec	easyJet
17 Dec - 07 Jan	Ryanair
15 Dec - 07 Jan	Ryanair
17 Dec - 06 Jan	Ryanair
12 Dec - 10 Jan	Ryanair
16 Dec - 30 Dec	easyJet
01 Dec - 05 Dec	Ryanair
04 Dec - 09 Dec	easyJet
05 Dec - 08 Dec	Wizz Air Malta

Also check the deals for one-way flights from London to Toronto 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 Toronto in December from $485

Return flights