Cheapest return flights from Toronto to London in September from $799

Best time to book flights for Toronto (YTZ) to London (LHR) flights at AirHint

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

Return flights

02 Sep - 01 Oct Air Canada
20 Sep - 27 Sep Air Canada
10 Sep - 24 Sep Air Canada
10 Sep - 17 Sep Air Canada
23 Sep - 30 Sep Austrian Airlines
12 Sep - 22 Sep Porter Airlines (Canada) Ltd
10 Sep - 22 Sep Porter Airlines (Canada) Ltd
07 Sep - 17 Sep Porter Airlines (Canada) Ltd
19 Sep - 28 Sep Porter Airlines (Canada) Ltd
25 Sep - 06 Oct Porter Airlines (Canada) Ltd
05 Sep - 18 Sep Porter Airlines (Canada) Ltd

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