AirHint found the following cheapest return flights from Ontario (ONT) to Athens (ATH) in November 2025 (see full year).

Return flights

26 Nov - 03 Dec	British Airways
18 Nov - 25 Nov	Iberia
11 Nov - 17 Nov	Iberia
03 Nov - 10 Nov	Iberia
18 Nov - 08 Dec	Iberia
28 Nov - 08 Dec	Iberia
21 Nov - 05 Dec	British Airways
05 Nov - 12 Nov	Iberia
25 Nov - 02 Dec	Iberia
18 Nov - 02 Dec	Iberia
23 Nov - 02 Dec	Iberia
26 Nov - 02 Dec	Iberia

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

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 November from 855€

Return flights