Cheapest return flights from Ontario to Athens in October from $453

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

Return flights

27 Oct - 03 Nov British Airways
26 Oct - 02 Nov British Airways
29 Oct - 05 Nov British Airways
19 Oct - 26 Oct British Airways
20 Oct - 27 Oct British Airways
21 Oct - 28 Oct British Airways
18 Oct - 26 Oct British Airways
15 Oct - 22 Oct British Airways
17 Oct - 28 Oct British Airways
30 Oct - 06 Nov British Airways
18 Oct - 25 Oct British Airways
13 Oct - 20 Oct British Airways
14 Oct - 21 Oct British Airways
22 Oct - 29 Oct British Airways
31 Oct - 07 Nov British Airways
28 Oct - 04 Nov Iberia
25 Oct - 01 Nov Iberia

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

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