Cheapest return flights from London to Toronto in September from $485

Best time to book flights for London (LCY) to Toronto (YYZ) flights at AirHint

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

Return flights

23 Sep - 02 Oct SWISS
16 Sep - 30 Sep SWISS
10 Sep - 19 Sep SWISS
23 Sep - 30 Sep SWISS
16 Sep - 07 Oct SWISS
05 Sep - 19 Sep SWISS
05 Sep - 21 Sep SWISS
05 Sep - 12 Sep SWISS
10 Sep - 14 Sep SWISS
09 Sep - 16 Sep SWISS
02 Sep - 09 Sep British Airways
12 Sep - 21 Sep British Airways
18 Sep - 03 Oct British Airways
26 Sep - 06 Oct British Airways
17 Sep - 08 Oct British Airways
25 Sep - 05 Oct British Airways
23 Sep - 03 Oct British Airways
22 Sep - 03 Oct British Airways
26 Sep - 13 Oct British Airways
19 Sep - 12 Oct British Airways

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

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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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