Cheapest return flights from Ontario to Barcelona in June from $1143

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

Return flights

16 Jun - 25 Jun Condor
02 Jun - 11 Jun British Airways
20 Jun - 10 Jul British Airways
01 Jun - 01 Jul British Airways
11 Jun - 25 Jun British Airways
10 Jun - 10 Jul British Airways
11 Jun - 21 Jun Iberia
07 Jun - 21 Jun British Airways
11 Jun - 27 Jun British Airways
25 Jun - 05 Jul British Airways
03 Jun - 24 Jun Iberia
06 Jun - 11 Jun British Airways
24 Jun - 25 Jul Iberia
20 Jun - 04 Jul British Airways
16 Jun - 30 Jun British Airways
29 Jun - 13 Jul British Airways
05 Jun - 15 Jun Iberia
08 Jun - 15 Jul jetBlue

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

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