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

Return flights

12 Oct - 19 Oct	British Airways	direct
06 Oct - 11 Nov	Finnair	direct
21 Oct - 27 Oct	Finnair	direct
07 Oct - 23 Oct	Air Canada	direct
05 Oct - 15 Oct	British Airways
08 Oct - 23 Oct	Air Canada	direct
08 Oct - 15 Oct	Air Canada	direct
11 Oct - 17 Oct	Air Canada	direct
05 Oct - 15 Oct	Air Canada	direct
19 Oct - 23 Oct	Air Canada	direct
22 Oct - 26 Oct	Lufthansa	direct
23 Oct - 03 Nov	Lufthansa	direct

Also check the deals for one-way flights from Toronto to London 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 Toronto to London in October from 547€

Return flights