AirHint found the following cheapest return flights from Ontario (ONT) to Helsinki (HEL) in June 2026 (see full year).
Return flights
| 09 Jun - 04 Jul | Iberia | ||
| 30 Jun - 25 Jul | British Airways | ||
| 25 Jun - 09 Jul | British Airways | ||
| 11 Jun - 25 Jun | British Airways |
Also check the deals for one-way flights from Ontario to Helsinki in June.
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