Cheapest return flights from Chicago to Warsaw in September from 573€

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

Return flights

16 Sep - 23 Sep Delta
09 Sep - 25 Sep Delta
27 Sep - 30 Sep Frontier Airlines
07 Sep - 21 Sep Delta
23 Sep - 26 Oct Delta
19 Sep - 05 Oct Frontier Airlines
11 Sep - 16 Sep Frontier Airlines
08 Sep - 13 Sep Air France
19 Sep - 28 Sep Frontier Airlines
26 Sep - 29 Sep Frontier Airlines
13 Sep - 17 Sep Delta
07 Sep - 13 Sep Delta

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

Skyscanner

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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