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

Return flights

04 Sep - 19 Sep	TAP
04 Sep - 13 Sep	TAP
20 Sep - 26 Sep	TAP
10 Sep - 13 Sep	TAP
03 Sep - 17 Sep	TAP
03 Sep - 17 Sep	Air Canada	direct
04 Sep - 19 Sep	Air Canada	direct
11 Sep - 18 Sep	Air Canada	direct
13 Sep - 20 Sep	Air Canada	direct
06 Sep - 13 Sep	Air Canada	direct
26 Sep - 05 Oct	Air Canada
30 Sep - 10 Oct	Lufthansa	direct
30 Sep - 06 Oct	Lufthansa	direct
26 Sep - 05 Oct	British Airways	direct

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

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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Cheapest return flights from Toronto to London in September from 497€

Return flights