Cheapest return flights from Ontario to Athens in May from $658

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

Return flights

05 May - 19 May British Airways
15 May - 26 May British Airways
02 May - 10 May British Airways
15 May - 24 May British Airways
06 May - 16 May British Airways
20 May - 03 Jun Iberia
23 May - 01 Jun Iberia
28 May - 09 Jun British Airways
23 May - 06 Jun British Airways
09 May - 30 May British Airways
30 May - 20 Jun British Airways

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

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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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