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

Return flights

10 Mar - 17 Mar	Delta
11 Mar - 18 Mar	Delta
09 Mar - 16 Mar	Delta
12 Mar - 19 Mar	Delta
10 Mar - 16 Mar	Delta
09 Mar - 14 Mar	Delta
13 Mar - 20 Mar	Air France
22 Mar - 10 Apr	Frontier Airlines
29 Mar - 05 Apr	Porter Airlines (Canada) Ltd
26 Mar - 02 Apr	Porter Airlines (Canada) Ltd
19 Mar - 27 Mar	Frontier Airlines
20 Mar - 28 Mar	Frontier Airlines
19 Mar - 28 Mar	Frontier Airlines
27 Mar - 06 Apr	Porter Airlines (Canada) Ltd
26 Mar - 04 Apr	Porter Airlines (Canada) Ltd
28 Mar - 12 Apr	Delta
28 Mar - 11 Apr	Delta
28 Mar - 04 Apr	Delta
30 Mar - 06 Apr	Virgin Atlantic

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

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 March from 390€

Return flights