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

Return flights

06 May - 12 May	Air Canada
03 May - 12 May	SWISS
06 May - 19 May	Air Canada
01 May - 12 May	SWISS
06 May - 18 May	British Airways
19 May - 09 Jun	Finnair
16 May - 31 May	Scandinavian Airlines
06 May - 16 May	Air Canada
17 May - 31 May	Air Canada
01 May - 12 May	LOT	direct
03 May - 12 May	LOT	direct
30 May - 27 Jun	Scandinavian Airlines
19 May - 09 Jun	LOT	direct
29 May - 26 Jun	Scandinavian Airlines
29 May - 26 Jun	LOT	direct
30 May - 27 Jun	LOT	direct

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 $407

Return flights