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

Return flights

13 May - 20 May	Virgin Atlantic
09 May - 16 May	Virgin Atlantic
12 May - 19 May	Virgin Atlantic
15 May - 22 May	Virgin Atlantic
17 May - 06 Jun	Virgin Atlantic
11 May - 18 May	Virgin Atlantic
14 May - 21 May	Virgin Atlantic
16 May - 23 May	Delta
11 May - 30 Jun	Virgin Atlantic
08 May - 17 May	Delta
10 May - 17 May	Virgin Atlantic
14 May - 06 Jun	Porter Airlines (Canada) Ltd
29 May - 20 Jun	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 $690

Return flights