Cheapest return DTW–BCN flights, September

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

Return flights

29 Sep - 06 Oct American Airlines
10 Sep - 17 Sep Turkish Airlines
16 Sep - 23 Sep Turkish Airlines
17 Sep - 24 Sep Turkish Airlines
28 Sep - 05 Oct Air Canada
15 Sep - 22 Sep Turkish Airlines
18 Sep - 25 Sep Air Canada
14 Sep - 21 Sep Turkish Airlines
27 Sep - 04 Oct Air Canada
19 Sep - 26 Sep Iberia
20 Sep - 27 Sep Air Canada
08 Sep - 15 Sep American Airlines
13 Sep - 20 Sep Turkish Airlines

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

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