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

Return flights

17 Oct - 25 Oct	Air Canada
17 Oct - 08 Nov	Air Canada
15 Oct - 25 Oct	Air Canada
09 Oct - 15 Oct	Air Canada
02 Oct - 07 Oct	Air Canada
07 Oct - 15 Oct	Air Canada
02 Oct - 10 Oct	Air Canada
02 Oct - 11 Oct	Air Canada
02 Oct - 09 Oct	Air Canada
17 Oct - 26 Oct	Air Canada
21 Oct - 26 Oct	Air Canada
01 Oct - 07 Nov	Air Canada
23 Oct - 09 Nov	Air Canada
27 Oct - 04 Nov	Air Canada
16 Oct - 04 Nov	Air Canada
16 Oct - 28 Nov	Air Canada
23 Oct - 21 Nov	Air Canada
15 Oct - 12 Nov	Air Canada
19 Oct - 07 Nov	Air Canada
21 Oct - 05 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 $442

Return flights