Cheapest return flights from Ontario to Barcelona in May from $890

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

Return flights

05 May - 19 May British Airways
06 May - 12 May British Airways
04 May - 18 May British Airways
06 May - 18 May British Airways
19 May - 26 May British Airways
08 May - 20 May British Airways
08 May - 22 May British Airways
04 May - 16 May British Airways
01 May - 08 May British Airways
06 May - 16 May British Airways
26 May - 11 Jun British Airways
16 May - 06 Jun British Airways
25 May - 07 Jun British Airways
24 May - 07 Jun SWISS
27 May - 12 Jun British Airways
22 May - 06 Jun British Airways

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

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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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