AirHint found the following cheapest return flights from Chicago (ORD) to Warsaw (WAW) in May 2026 (see full year).

Return flights

04 May - 28 May	Air France
04 May - 29 May	Air France
04 May - 25 May	Air France
03 May - 26 May	Lufthansa
03 May - 25 May	SWISS
10 May - 03 Jun	United
06 May - 16 May	Delta
06 May - 31 May	United
18 May - 12 Jun	Finnair
10 May - 31 May	Lufthansa
07 May - 17 May	Turkish Airlines
04 May - 29 May	LOT	direct
27 May - 16 Jun	Finnair
27 May - 15 Jun	Scandinavian Airlines
27 May - 30 Jun	Finnair
29 May - 16 Jun	Finnair
23 May - 06 Jun	TAP
25 May - 09 Jun	Brussels Airlines
30 May - 13 Jun	TAP
20 May - 10 Jun	Spirit Airlines

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

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 May from 436€

Return flights