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

Return flights

11 Aug - 22 Aug	Scandinavian Airlines
09 Aug - 24 Aug	Scandinavian Airlines
26 Aug - 08 Sep	Austrian Airlines
31 Aug - 16 Sep	SWISS
09 Aug - 23 Aug	Scandinavian Airlines
07 Aug - 26 Aug	Lufthansa
31 Aug - 16 Sep	LOT	direct
13 Aug - 20 Aug	Air Canada
24 Aug - 31 Aug	United
17 Aug - 18 Sep	Icelandair
18 Aug - 15 Sep	Turkish Airlines
18 Aug - 27 Aug	Finnair
05 Aug - 21 Aug	United
07 Aug - 21 Aug	United
19 Aug - 01 Sep	Icelandair
28 Aug - 25 Sep	Finnair
07 Aug - 27 Aug	TAP
21 Aug - 01 Sep	Icelandair
17 Aug - 18 Sep	LOT	direct
28 Aug - 04 Sep	LOT	direct

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 428€

Return flights