Cheapest one-way flights from Ontario to Athens in May from $557
AirHint found the following cheapest one-way flights from Ontario (ONT) to Athens (ATH) in May 2025 (see full year).
One-Way flights
| 29 May | Frontier Airlines | ||
| 15 May | Air France | ||
| 30 May | Frontier Airlines | ||
| 24 May | Frontier Airlines | ||
| 25 May | Frontier Airlines | ||
| 22 May | Frontier Airlines | ||
| 18 May | Air Serbia |
Also check the deals for return flights from Ontario to Athens in May.
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.
