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

Return flights

22 Aug - 30 Aug	TAP
07 Aug - 14 Aug	Finnair
30 Aug - 15 Sep	Lufthansa
27 Aug - 03 Sep	Lufthansa
21 Aug - 24 Aug	United
22 Aug - 24 Aug	SWISS
20 Aug - 31 Aug	SWISS
24 Aug - 31 Aug	United
24 Aug - 15 Sep	Lufthansa
19 Aug - 03 Sep	United
21 Aug - 26 Aug	Lufthansa
24 Aug - 06 Sep	United
25 Aug - 02 Sep	Lufthansa
21 Aug - 27 Aug	United
12 Aug - 03 Sep	Brussels Airlines
18 Aug - 02 Sep	United
14 Aug - 01 Sep	KLM
15 Aug - 22 Aug	Lufthansa
14 Aug - 18 Aug	KLM
24 Aug - 06 Sep	LOT	direct

Also check the deals for one-way flights from Warsaw to Chicago 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 Warsaw to Chicago in August from 442€

Return flights