Cheapest return flights from Ontario to Barcelona in September from $654

Best time to book flights for Ontario (ONT) to Barcelona (BCN) flights at AirHint

AirHint found the following cheapest return flights from Ontario (ONT) to Barcelona (BCN) in September 2025 (see full year).

Return flights

23 Sep - 07 Oct Iberia
20 Sep - 03 Oct Iberia
21 Sep - 01 Oct Iberia
20 Sep - 29 Sep Iberia
26 Sep - 30 Sep British Airways
03 Sep - 08 Sep KLM
07 Sep - 14 Sep British Airways
20 Sep - 28 Sep Iberia
17 Sep - 25 Sep Iberia
12 Sep - 17 Sep Iberia
17 Sep - 22 Sep British Airways
04 Sep - 13 Sep British Airways
13 Sep - 20 Sep British Airways
26 Sep - 10 Oct Iberia
20 Sep - 11 Oct Iberia
16 Sep - 28 Oct KLM
26 Sep - 11 Oct KLM

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

Skyscanner

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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