Cheapest return flights from Ontario to London in August from $1155

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

Return flights

15 Aug - 05 Sep Alaska Airlines
07 Aug - 27 Aug British Airways
02 Aug - 22 Aug British Airways
02 Aug - 09 Aug Turkish Airlines

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

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