Cheapest return flights from Ontario to Barcelona in September from $873

AirHint found the following cheapest return flights from Ontario (ONT) to Barcelona (BCN) in September 2026 (see full year).

Return flights

01 Sep - 01 Oct British Airways
02 Sep - 10 Sep British Airways
18 Sep - 05 Oct British Airways
01 Sep - 19 Sep British Airways
12 Sep - 19 Sep British Airways
08 Sep - 23 Sep British Airways
01 Sep - 09 Sep British Airways
02 Sep - 08 Sep British Airways
10 Sep - 18 Sep British Airways
11 Sep - 19 Sep British Airways
11 Sep - 18 Sep British Airways
03 Sep - 09 Sep British Airways
28 Sep - 12 Oct Turkish Airlines

Also check the deals for one-way flights from Ontario to Barcelona in September.

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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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