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

Return flights

21 May - 30 Jun	Finnair
28 May - 30 Jun	Finnair
18 May - 31 May	British Airways
01 May - 05 May	Lufthansa
01 May - 25 May	United
05 May - 11 May	United
19 May - 01 Jun	Lufthansa
17 May - 01 Jun	Lufthansa
18 May - 01 Jun	Lufthansa
20 May - 01 Jun	Lufthansa
21 May - 01 Jun	Lufthansa
22 May - 01 Jun	Lufthansa
23 May - 01 Jun	Lufthansa
24 May - 01 Jun	Lufthansa
04 May - 10 May	United
01 May - 07 May	Lufthansa
05 May - 13 May	Lufthansa
01 May - 12 May	United
01 May - 08 May	KLM
02 May - 23 May	Finnair

Also check the deals for one-way flights from Warsaw to Chicago 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 Warsaw to Chicago in May from $562

Return flights