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

Return flights

08 Sep - 23 Sep	Air France
01 Sep - 16 Sep	Air France
01 Sep - 17 Sep	Air France
09 Sep - 16 Sep	KLM
04 Sep - 11 Sep	Air France
04 Sep - 19 Sep	Air France
07 Sep - 27 Sep	Delta
13 Sep - 27 Sep	Delta
06 Sep - 13 Sep	Air France
17 Sep - 21 Sep	Delta
29 Sep - 25 Oct	Air France
08 Sep - 04 Oct	Air France
14 Sep - 04 Oct	Air France
27 Sep - 18 Oct	Air France
15 Sep - 11 Oct	Air France

Also check the deals for one-way flights from Dallas to Frankfurt 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 Frankfurt in September from 653€

Return flights