Cheapest return flights from Toronto to London in September from $492

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

Return flights

22 Sep - 26 Sep Porter Airlines (Canada) Ltd
09 Sep - 16 Sep WestJet
14 Sep - 19 Sep Aer Lingus
21 Sep - 26 Sep WestJet
23 Sep - 18 Oct WestJet
20 Sep - 24 Sep Porter Airlines (Canada) Ltd
16 Sep - 23 Sep WestJet
28 Sep - 18 Oct WestJet
13 Sep - 19 Sep Aer Lingus
23 Sep - 07 Oct Porter Airlines (Canada) Ltd
22 Sep - 06 Oct Porter Airlines (Canada) Ltd
09 Sep - 23 Sep WestJet
22 Sep - 01 Oct Porter Airlines (Canada) Ltd
14 Sep - 20 Sep Aer Lingus
09 Sep - 17 Sep WestJet
28 Sep - 06 Oct WestJet
28 Sep - 09 Oct Icelandair
29 Sep - 07 Oct Aer Lingus
21 Sep - 01 Oct WestJet
29 Sep - 05 Oct 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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