Cheapest return flights from Ontario to London in October from 588€

AirHint found the following cheapest return flights from Ontario (ONT) to London (LHR) in October 2026 (see full year).

Return flights

20 Oct - 27 Oct British Airways
13 Oct - 30 Oct British Airways
07 Oct - 15 Oct Iberia
18 Oct - 25 Oct Iberia
08 Oct - 19 Oct Iberia
01 Oct - 15 Oct Iberia
06 Oct - 16 Oct Alaska Airlines
02 Oct - 17 Oct Alaska Airlines
02 Oct - 11 Oct Alaska Airlines
26 Oct - 09 Nov China Airlines

Also check the deals for one-way flights from Ontario to London in October.

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