AirHint found the following cheapest return flights from Ontario (ONT) to Dublin (DUB) in June 2026 (see full year).
Return flights
| 01 Jun - 08 Jun | Iberia | ||
| 08 Jun - 22 Jun | Iberia | ||
| 07 Jun - 21 Jun | Iberia | ||
| 04 Jun - 13 Jun | British Airways | ||
| 19 Jun - 24 Jun | Iberia | ||
| 19 Jun - 27 Jun | Iberia |
Also check the deals for one-way flights from Ontario to Dublin in June.
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