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

Return flights

06 Oct - 14 Oct	Air Canada
07 Oct - 29 Nov	Air Canada
07 Oct - 14 Oct	Air Canada
09 Oct - 14 Oct	Air Canada
23 Oct - 28 Oct	Air Canada
21 Oct - 17 Nov	Air Canada
28 Oct - 11 Nov	Lufthansa
06 Oct - 13 Oct	Air Canada
28 Oct - 12 Nov	Lufthansa
28 Oct - 15 Nov	Lufthansa
28 Oct - 10 Nov	Lufthansa
23 Oct - 26 Oct	Air Canada
22 Oct - 15 Nov	SWISS
01 Oct - 14 Oct	Air Canada
02 Oct - 14 Oct	Air Canada
06 Oct - 14 Oct	Air Canada	direct
03 Oct - 14 Oct	Air Canada	direct
07 Oct - 29 Nov	Air Canada	direct
27 Oct - 10 Nov	Lufthansa
29 Oct - 27 Nov	Air Canada

Also check the deals for one-way flights from London to Toronto in October.

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 October from 382€

Return flights