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

Return flights

01 May - 16 May	TAP
13 May - 17 May	TAP
13 May - 21 May	TAP
13 May - 06 Jun	TAP
18 May - 27 May	British Airways
19 May - 26 May	British Airways
14 May - 06 Jun	Icelandair
18 May - 25 May	British Airways
15 May - 18 May	Scandinavian Airlines
20 May - 27 May	Aer Lingus
17 May - 23 May	Icelandair
17 May - 25 May	Iberia
21 May - 04 Jun	Aer Lingus
18 May - 13 Jun	Finnair
30 May - 06 Jun	TAP
27 May - 03 Jun	Aer Lingus
21 May - 06 Jun	Aer Lingus
21 May - 13 Jun	Aer Lingus
31 May - 07 Jun	TAP
29 May - 05 Jun	Icelandair

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 331€

Return flights