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

Return flights

11 Aug - 27 Aug	Delta
17 Aug - 03 Sep	Delta
18 Aug - 25 Aug	Delta
24 Aug - 09 Sep	Delta
17 Aug - 25 Aug	Delta
13 Aug - 31 Aug	Delta
10 Aug - 31 Aug	Delta
17 Aug - 24 Aug	Delta
25 Aug - 01 Sep	Delta
30 Aug - 13 Sep	Delta
22 Aug - 15 Sep	Delta
11 Aug - 26 Aug	Delta
02 Aug - 18 Aug	Delta
12 Aug - 28 Aug	Delta
01 Aug - 18 Aug	Delta

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 479€

Return flights