AirHint found the following cheapest one-way flights from Chicago (ORD) to Athens (ATH) in August 2025 (see full year).

One-Way flights

12 Aug	jetBlue
11 Aug	Spirit Airlines
09 Aug	Frontier Airlines
13 Aug	jetBlue
06 Aug	Spirit Airlines
16 Aug	Spirit Airlines
27 Aug	jetBlue
30 Aug	Frontier Airlines
14 Aug	Spirit Airlines
03 Aug	Spirit Airlines

Also check the deals for return 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 one-way flights from Chicago to Athens in August from $211

One-Way flights