AirHint found the following cheapest one-way flights from Ontario (ONT) to Barcelona (BCN) in July 2026 (see full year).
One-Way flights
| 27 Jul | Iberia | ||
| 15 Jul | Alaska Airlines | ||
| 10 Jul | Iberia | ||
| 19 Jul | Iberia | ||
| 12 Jul | jetBlue |
Also check the deals for return flights from Ontario to Barcelona in July.
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