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

Return flights

07 May - 30 May	Porter Airlines (Canada) Ltd
08 May - 11 May	Porter Airlines (Canada) Ltd
06 May - 27 May	Delta
23 May - 29 May	Porter Airlines (Canada) Ltd
10 May - 20 May	Virgin Atlantic
07 May - 13 May	Virgin Atlantic
13 May - 20 May	Virgin Atlantic

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 766€

Return flights