Cheapest return flights from London to Toronto in September from $427

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

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

Return flights

03 Sep - 24 Sep Icelandair
02 Sep - 24 Sep Air Transat
01 Sep - 24 Sep Air Transat
17 Sep - 30 Sep Air Transat
02 Sep - 09 Sep Air Transat
23 Sep - 15 Oct Air Transat
17 Sep - 08 Oct Air Transat
24 Sep - 30 Sep Icelandair
22 Sep - 26 Sep Icelandair
02 Sep - 24 Sep Air Transat direct
18 Sep - 29 Sep Icelandair
07 Sep - 14 Sep Icelandair
21 Sep - 01 Oct Air Transat
26 Sep - 10 Oct Air Transat
01 Sep - 15 Oct Air Transat
24 Sep - 03 Oct Air Transat
10 Sep - 01 Oct Air Transat
29 Sep - 07 Oct Air Transat
30 Sep - 15 Oct Air Transat
01 Sep - 01 Oct Air Transat

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

Skyscanner

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.

Book a cheap hotel in Toronto

Cheap car rent in Toronto