AirHint found the following cheapest return flights from Chicago (MDW) to Barcelona (BCN) in December 2025 (see full year).

Return flights

07 Dec - 24 Dec	Delta
08 Dec - 24 Dec	Delta
08 Dec - 25 Dec	Delta
06 Dec - 24 Dec	Delta
22 Dec - 29 Dec	Delta
21 Dec - 06 Jan	Air France
20 Dec - 18 Jan	Air France
20 Dec - 06 Jan	Air France
19 Dec - 06 Jan	Delta

Also check the deals for one-way flights from Chicago to Barcelona in December.

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 December from 434€

Return flights