Cheapest return flights from Ontario to Barcelona in May from $865

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 May 2025 (see full year).

Return flights

07 May - 14 May Frontier Airlines
05 May - 15 May Iberia
17 May - 27 Jun British Airways
06 May - 14 May Iberia
17 May - 07 Jun British Airways
27 May - 06 Jun British Airways
26 May - 06 Jun British Airways
08 May - 13 May Iberia
05 May - 11 May Iberia
04 May - 11 May Iberia
27 May - 09 Jun British Airways
25 May - 06 Jun Iberia
08 May - 11 May Iberia
03 May - 11 May Iberia
08 May - 16 May Iberia
07 May - 15 May jetBlue
28 May - 11 Jun British Airways
28 May - 05 Jun British Airways
28 May - 07 Jun British Airways
30 May - 11 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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