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

Return flights

08 May - 22 May	Scandinavian Airlines
08 May - 16 May	Scandinavian Airlines
05 May - 12 May	Air Canada
12 May - 26 May	British Airways
23 May - 06 Jun	Scandinavian Airlines
26 May - 09 Jun	Scandinavian Airlines
26 May - 31 May	Icelandair
24 May - 31 May	Icelandair
12 May - 26 May	Finnair	direct
08 May - 22 May	Finnair	direct
27 May - 06 Jun	United
24 May - 31 May	British Airways	direct
26 May - 09 Jun	Finnair	direct
23 May - 06 Jun	Finnair	direct
26 May - 31 May	British Airways	direct

Also check the deals for one-way flights from Chicago 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.

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Cheapest return flights from Chicago to Athens in May from 404€

Return flights