Cheapest return flights from Chicago to Warsaw in September from 441€

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

Return flights

29 Sep - 13 Oct SWISS
23 Sep - 30 Sep Austrian Airlines
28 Sep - 12 Oct Lufthansa
22 Sep - 07 Oct SWISS
23 Sep - 18 Oct Austrian Airlines
28 Sep - 05 Oct Austrian Airlines
23 Sep - 11 Oct Austrian Airlines
23 Sep - 02 Oct British Airways
26 Sep - 18 Oct Austrian Airlines
23 Sep - 26 Oct Lufthansa
27 Sep - 13 Oct SWISS
26 Sep - 30 Sep Austrian Airlines
21 Sep - 30 Sep Spirit Airlines
17 Sep - 25 Sep British Airways
21 Sep - 28 Sep Scandinavian Airlines
18 Sep - 21 Sep Frontier Airlines
20 Sep - 27 Sep Frontier Airlines
18 Sep - 27 Sep Frontier Airlines
17 Sep - 27 Sep Delta
17 Sep - 22 Sep Lufthansa

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

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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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