AirHint found the following cheapest return flights from Chicago (ORD) to Warsaw (WAW) in August 2025 (see full year).

Return flights

15 Aug - 22 Aug	Scandinavian Airlines
15 Aug - 25 Aug	Scandinavian Airlines
14 Aug - 25 Aug	Scandinavian Airlines
17 Aug - 02 Sep	Scandinavian Airlines
10 Aug - 31 Aug	Scandinavian Airlines
10 Aug - 25 Aug	Scandinavian Airlines
10 Aug - 24 Aug	Scandinavian Airlines
10 Aug - 26 Aug	SWISS
13 Aug - 25 Aug	SWISS
20 Aug - 27 Aug	United
26 Aug - 02 Sep	United
08 Aug - 22 Aug	Finnair
27 Aug - 10 Sep	Delta
07 Aug - 02 Sep	SWISS
21 Aug - 01 Sep	Scandinavian Airlines
28 Aug - 04 Sep	United
29 Aug - 12 Sep	United
31 Aug - 07 Sep	United
16 Aug - 01 Sep	KLM
22 Aug - 20 Sep	TAP

Also check the deals for one-way flights from Chicago to Warsaw in August.

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 Warsaw in August from 384€

Return flights