Cheapest return flights from Toronto to London in September from $510

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

Return flights

29 Sep - 10 Oct Air Transat
29 Sep - 07 Oct Air Transat
29 Sep - 09 Oct Air Transat
22 Sep - 10 Oct Air Transat
24 Sep - 10 Oct Air Transat
24 Sep - 07 Oct Air Transat
22 Sep - 09 Oct Air Transat
22 Sep - 04 Oct Air Transat
24 Sep - 21 Oct Porter Airlines (Canada) Ltd
17 Sep - 22 Sep Air Transat
30 Sep - 13 Oct Porter Airlines (Canada) Ltd
17 Sep - 21 Sep Air Transat
18 Sep - 22 Sep Air Transat
22 Sep - 23 Sep Porter Airlines (Canada) Ltd
17 Sep - 24 Sep Air Transat
18 Sep - 23 Sep Air Transat
24 Sep - 28 Sep Air Transat
27 Sep - 30 Sep Porter Airlines (Canada) Ltd
19 Sep - 22 Sep Air Transat
28 Sep - 29 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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