AirHint found the following cheapest return flights from Ontario (ONT) to Athens (ATH) in July 2026 (see full year).

Return flights

29 Jul - 05 Aug	British Airways
31 Jul - 14 Aug	British Airways
18 Jul - 03 Aug	Iberia
27 Jul - 03 Aug	Iberia
02 Jul - 09 Jul	Iberia
14 Jul - 28 Jul	Iberia
03 Jul - 23 Jul	Iberia
03 Jul - 17 Jul	Iberia
11 Jul - 01 Aug	Iberia
09 Jul - 20 Jul	Iberia
05 Jul - 25 Jul	Iberia
23 Jul - 02 Aug	Iberia
01 Jul - 25 Jul	Iberia
04 Jul - 25 Jul	Iberia
09 Jul - 19 Jul	Iberia
17 Jul - 31 Jul	Iberia

Also check the deals for one-way flights from Ontario to Athens in July.

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.

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Cheapest return flights from Ontario to Athens in July from 1013€

Return flights