Cheapest return flights from Toronto to London in September from $634

AirHint found the following cheapest return flights from Toronto (YTZ) to London (LGW) in September 2026 (see full year).

Return flights

10 Sep - 25 Sep Air Transat
11 Sep - 19 Sep Air Transat
01 Sep - 11 Sep Air Transat
05 Sep - 19 Sep Air Transat
21 Sep - 03 Oct Air Transat
11 Sep - 25 Sep Air Transat
08 Sep - 25 Sep Air Transat
13 Sep - 27 Sep Air Transat
02 Sep - 16 Sep Air Transat
04 Sep - 18 Sep Air Transat
03 Sep - 13 Sep Air Transat
04 Sep - 02 Oct Air Transat
04 Sep - 03 Oct Air Transat

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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