Cheapest return ORD–BCN flights, September

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

Return flights

17 Sep - 24 Sep Turkish Airlines
01 Sep - 30 Sep Turkish Airlines
25 Sep - 08 Oct Turkish Airlines
01 Sep - 14 Sep Turkish Airlines
02 Sep - 09 Sep Turkish Airlines
10 Sep - 14 Sep Turkish Airlines
12 Sep - 19 Sep Turkish Airlines
24 Sep - 01 Oct SWISS
06 Sep - 18 Sep Iberia direct
24 Sep - 01 Oct Finnair direct
29 Sep - 07 Oct Spirit Airlines
03 Sep - 07 Sep SWISS
01 Sep - 30 Sep Iberia direct
25 Sep - 08 Oct Iberia direct
17 Sep - 24 Sep Iberia direct

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

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