AirHint found the following cheapest return flights from Dallas (DAL) to Barcelona (BCN) in September 2025 (see full year).

Return flights

23 Sep - 01 Oct	Air France
25 Sep - 09 Oct	Delta
16 Sep - 26 Sep	Delta
06 Sep - 19 Sep	Delta
21 Sep - 07 Oct	Delta
20 Sep - 07 Oct	Delta
23 Sep - 30 Sep	Delta
21 Sep - 04 Oct	Air France
21 Sep - 30 Sep	Air France
26 Sep - 09 Oct	Delta
14 Sep - 04 Oct	Air France
08 Sep - 14 Sep	Air France
15 Sep - 21 Sep	Delta
06 Sep - 27 Sep	KLM
30 Sep - 03 Oct	Delta
12 Sep - 16 Sep	Air France
25 Sep - 03 Oct	Air France
24 Sep - 18 Oct	Air France
02 Sep - 27 Sep	Air France

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

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 Dallas to Barcelona in September from 499€

Return flights