Cheapest return flights from Chicago to Athens in September from $508

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

01 Sep - 15 Sep Scandinavian Airlines
01 Sep - 08 Sep Scandinavian Airlines
22 Sep - 01 Oct Scandinavian Airlines
16 Sep - 06 Oct Scandinavian Airlines
15 Sep - 22 Sep Scandinavian Airlines
01 Sep - 10 Sep Scandinavian Airlines
30 Sep - 14 Oct SWISS
25 Sep - 06 Oct Scandinavian Airlines
06 Sep - 22 Sep Scandinavian Airlines
02 Sep - 13 Sep Scandinavian Airlines
16 Sep - 23 Sep Scandinavian Airlines
08 Sep - 29 Sep Scandinavian Airlines
29 Sep - 24 Oct Scandinavian Airlines
06 Sep - 23 Sep Scandinavian Airlines
28 Sep - 25 Oct Scandinavian Airlines
29 Sep - 25 Oct Scandinavian Airlines
09 Sep - 30 Sep Scandinavian Airlines
27 Sep - 25 Oct Scandinavian Airlines
19 Sep - 03 Oct Spirit Airlines
10 Sep - 01 Oct LOT

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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