Cheapest one-way flights from Chicago to Athens in September from 188€

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

One-Way flights

10 Sep Spirit Airlines
14 Sep Frontier Airlines
27 Sep Frontier Airlines
28 Sep Frontier Airlines
22 Sep Frontier Airlines
29 Sep Spirit Airlines
25 Sep Spirit Airlines
18 Sep Spirit Airlines
16 Sep Spirit Airlines
30 Sep Spirit Airlines

Also check the deals for return flights from Chicago to Athens in September.

Skyscanner

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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