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

Return flights

09 May - 26 May	Virgin Atlantic
09 May - 25 May	Air Europa
09 May - 21 May	Virgin Atlantic
11 May - 18 May	Delta
09 May - 22 May	Delta
09 May - 18 May	Delta
04 May - 23 May	Delta
03 May - 19 May	Porter Airlines (Canada) Ltd
09 May - 24 May	Virgin Atlantic
09 May - 17 May	Delta
28 May - 02 Jun	Porter Airlines (Canada) Ltd
29 May - 12 Jun	Delta
31 May - 08 Jun	Condor

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 $608

Return flights