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

Return flights

13 Sep - 07 Oct	Scandinavian Airlines
01 Sep - 12 Sep	United
07 Sep - 22 Sep	Finnair
05 Sep - 12 Sep	Icelandair
14 Sep - 26 Oct	Scandinavian Airlines
12 Sep - 20 Sep	Icelandair
03 Sep - 09 Sep	Finnair
01 Sep - 14 Sep	TAP
30 Sep - 14 Oct	United
23 Sep - 31 Oct	Finnair
14 Sep - 20 Oct	Scandinavian Airlines
12 Sep - 19 Sep	Icelandair
12 Sep - 03 Oct	United
02 Sep - 12 Sep	KLM
14 Sep - 24 Oct	Air France
13 Sep - 02 Oct	Finnair
06 Sep - 20 Sep	Scandinavian Airlines
30 Sep - 10 Oct	Turkish Airlines
28 Sep - 08 Oct	Delta
03 Sep - 14 Sep	Icelandair

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 430€

Return flights