Cheapest return flights from London to Toronto in September from $643

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

Return flights

29 Sep - 06 Oct SWISS
24 Sep - 01 Oct Delta
10 Sep - 28 Sep Iberia
23 Sep - 29 Sep Delta
24 Sep - 29 Sep Delta
10 Sep - 22 Sep British Airways
10 Sep - 17 Sep British Airways
01 Sep - 14 Sep British Airways
22 Sep - 29 Sep British Airways
07 Sep - 14 Sep British Airways
17 Sep - 27 Sep British Airways
07 Sep - 21 Sep British Airways
28 Sep - 18 Oct British Airways
21 Sep - 05 Oct Delta
28 Sep - 06 Oct SWISS
28 Sep - 10 Oct British Airways
29 Sep - 04 Oct KLM
28 Sep - 04 Oct British Airways
21 Sep - 03 Oct British Airways
24 Sep - 07 Oct British Airways

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

Powered by

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

Feel free to contact us with any feedback or request another flight research.