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

Return flights

03 May - 10 May	Icelandair
10 May - 20 May	Icelandair
01 May - 06 May	Icelandair
01 May - 08 May	Icelandair
16 May - 24 May	Icelandair
08 May - 13 May	TAP
13 May - 26 May	TAP
09 May - 18 May	Icelandair
10 May - 15 May	Icelandair
20 May - 27 May	Icelandair
19 May - 09 Jun	Air Canada
19 May - 03 Jun	Air Canada
21 May - 04 Jun	Aer Lingus
30 May - 06 Jun	TAP
25 May - 08 Jun	Air Canada
28 May - 04 Jun	Spirit Airlines
28 May - 04 Jun	Finnair	direct
25 May - 08 Jun	Lufthansa	direct
24 May - 01 Jun	Lufthansa
25 May - 01 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 $472

Return flights