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

Return flights

02 Sep - 16 Sep	Lufthansa
02 Sep - 01 Oct	Lufthansa
09 Sep - 16 Sep	Lufthansa
03 Sep - 17 Sep	SWISS
02 Sep - 12 Sep	Lufthansa
08 Sep - 15 Sep	Lufthansa
03 Sep - 30 Sep	SWISS
22 Sep - 19 Oct	Turkish Airlines
12 Sep - 20 Sep	Icelandair
24 Sep - 19 Oct	Turkish Airlines
17 Sep - 02 Oct	Turkish Airlines
17 Sep - 01 Oct	Turkish Airlines
11 Sep - 19 Sep	Lufthansa
12 Sep - 19 Sep	Icelandair
11 Sep - 23 Sep	Lufthansa
26 Sep - 06 Oct	Spirit Airlines
05 Sep - 11 Oct	Austrian Airlines
12 Sep - 09 Oct	Delta

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

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 Krakow in September from 431€

Return flights