Cheapest return flights from London to Toronto in September from $735

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

Return flights

15 Sep - 06 Oct SWISS
28 Sep - 03 Oct Delta
21 Sep - 29 Sep Delta
08 Sep - 22 Sep SWISS
01 Sep - 08 Sep SWISS
09 Sep - 16 Sep KLM
07 Sep - 20 Sep Delta
07 Sep - 14 Sep Delta
08 Sep - 29 Sep ITA Airways
16 Sep - 26 Sep Delta
14 Sep - 20 Sep LOT
04 Sep - 04 Oct LOT
18 Sep - 20 Sep Delta
29 Sep - 10 Oct KLM
29 Sep - 03 Oct KLM
19 Sep - 03 Oct KLM
28 Sep - 07 Oct KLM
26 Sep - 04 Oct Delta
30 Sep - 05 Oct KLM
26 Sep - 12 Oct SWISS

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

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