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

Return flights

28 Dec - 15 Jan	Lufthansa
26 Dec - 13 Jan	Lufthansa
26 Dec - 12 Jan	Lufthansa
26 Dec - 22 Jan	Lufthansa
26 Dec - 14 Jan	Lufthansa
26 Dec - 22 Jan	Air Canada	direct
26 Dec - 13 Jan	Air Canada	direct
26 Dec - 14 Jan	Air Canada	direct
26 Dec - 16 Jan	Air Canada
27 Dec - 14 Jan	Lufthansa
26 Dec - 28 Dec	Air Canada
27 Dec - 28 Dec	Air Canada
27 Dec - 29 Dec	Finnair
23 Dec - 28 Dec	Lufthansa
25 Dec - 28 Dec	Lufthansa
24 Dec - 28 Dec	Air Canada
26 Dec - 30 Dec	Air Canada
26 Dec - 29 Dec	Air Dolomiti
26 Dec - 31 Dec	TAP
21 Dec - 28 Dec	Lufthansa

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 377€

Return flights