Cheapest return flights from Chicago to Athens in September from $485

Best time to book flights for Chicago (ORD) to Athens (ATH) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to Athens (ATH) in September 2025 (see full year).

Return flights

02 Sep - 10 Sep Scandinavian Airlines
22 Sep - 06 Oct Scandinavian Airlines
23 Sep - 15 Oct Scandinavian Airlines
01 Sep - 15 Sep Scandinavian Airlines
05 Sep - 17 Sep Scandinavian Airlines
08 Sep - 15 Sep Scandinavian Airlines
16 Sep - 26 Sep Scandinavian Airlines
25 Sep - 05 Oct Scandinavian Airlines
01 Sep - 26 Sep Scandinavian Airlines
01 Sep - 21 Sep Scandinavian Airlines
27 Sep - 11 Oct Scandinavian Airlines
15 Sep - 25 Sep Spirit Airlines
03 Sep - 17 Sep Turkish Airlines
04 Sep - 17 Sep Scandinavian Airlines
25 Sep - 09 Oct Turkish Airlines
10 Sep - 01 Oct Turkish Airlines
24 Sep - 15 Oct Turkish Airlines
24 Sep - 08 Oct Turkish Airlines
12 Sep - 06 Oct Turkish Airlines
28 Sep - 19 Oct Scandinavian Airlines

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

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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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