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

Return flights

03 May - 15 May	Icelandair
02 May - 15 May	Icelandair
02 May - 09 May	Icelandair
08 May - 11 May	Icelandair
13 May - 20 May	Icelandair
06 May - 13 May	TAP
08 May - 23 May	Icelandair
09 May - 15 May	TAP
01 May - 12 May	TAP
03 May - 14 May	United	direct
18 May - 03 Jun	Finnair
01 May - 30 Jun	Turkish Airlines
18 May - 06 Jun	Air Canada
20 May - 03 Jun	TAP
27 May - 03 Jun	TAP
29 May - 05 Jun	TAP
18 May - 03 Jun	American Airlines	direct
29 May - 01 Jun	Air Canada
29 May - 08 Jun	Air Canada
26 May - 02 Jun	Scandinavian Airlines

Also check the deals for one-way flights from Chicago to Barcelona 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 Barcelona in May from $377

Return flights