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

Return flights

11 Aug - 08 Sep	Lufthansa	direct
01 Aug - 08 Aug	Turkish Airlines
03 Aug - 10 Aug	Turkish Airlines
04 Aug - 11 Aug	Turkish Airlines
02 Aug - 09 Aug	Turkish Airlines
04 Aug - 11 Aug	Finnair	direct
02 Aug - 09 Aug	Finnair	direct
03 Aug - 10 Aug	Finnair	direct
01 Aug - 08 Aug	Iberia	direct

Also check the deals for one-way flights from Chicago to Athens in August.

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 August from 538€

Return flights