AirHint found the following cheapest return flights from Chicago (MDW) to Barcelona (BCN) in September 2026 (see full year).
Return flights
| 30 Sep - 07 Oct | Delta | ||
| 01 Sep - 08 Sep | Virgin Atlantic | ||
| 04 Sep - 10 Sep | Delta | ||
| 11 Sep - 18 Sep | Delta | ||
| 02 Sep - 12 Sep | Porter Airlines (Canada) Ltd | ||
| 18 Sep - 25 Sep | Air France | ||
| 25 Sep - 02 Oct | Air France |
Also check the deals for one-way flights from Chicago to Barcelona in September.
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