Cheapest return flights from Ontario to Barcelona in June from $1184

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

Return flights

10 Jun - 24 Jun British Airways
01 Jun - 09 Jun Iberia
04 Jun - 17 Jun British Airways
01 Jun - 10 Jun British Airways
28 Jun - 10 Jul British Airways
06 Jun - 27 Jun British Airways
27 Jun - 15 Jul British Airways
25 Jun - 06 Jul British Airways
22 Jun - 12 Jul British Airways
23 Jun - 12 Jul British Airways
12 Jun - 22 Jun Iberia
26 Jun - 14 Jul Iberia
12 Jun - 21 Jun Iberia
10 Jun - 14 Jun British Airways
14 Jun - 28 Jun British Airways
11 Jun - 27 Jun British Airways
25 Jun - 12 Jul British Airways
27 Jun - 11 Jul Iberia
29 Jun - 12 Jul British Airways
17 Jun - 01 Jul British Airways

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

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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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