AirHint found the following cheapest return flights from London (LHR) to Toronto (YYZ) in December 2026 (see full year).

Return flights

01 Dec - 12 Dec	Icelandair
02 Dec - 09 Dec	Icelandair
01 Dec - 10 Dec	Icelandair
08 Dec - 15 Dec	Icelandair
09 Dec - 15 Dec	Icelandair
07 Dec - 12 Dec	Icelandair
01 Dec - 06 Dec	Icelandair
03 Dec - 09 Dec	Icelandair
08 Dec - 17 Dec	Icelandair
04 Dec - 12 Dec	Icelandair
31 Dec - 11 Jan	Finnair
31 Dec - 11 Jan	Air Canada	direct
29 Dec - 06 Jan	Finnair
27 Dec - 09 Jan	Finnair
24 Dec - 07 Jan	Finnair
24 Dec - 10 Jan	Finnair
23 Dec - 10 Jan	Finnair
22 Dec - 03 Jan	TAP
30 Dec - 04 Jan	TAP
16 Dec - 03 Jan	TAP

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 367€

Return flights