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

Return flights

23 Sep - 30 Sep	Condor
30 Sep - 14 Oct	Condor
22 Sep - 29 Sep	Condor
25 Sep - 06 Oct	jetBlue
22 Sep - 06 Oct	jetBlue
24 Sep - 08 Oct	jetBlue
25 Sep - 30 Sep	jetBlue
22 Sep - 24 Sep	jetBlue
23 Sep - 28 Sep	Condor
23 Sep - 01 Oct	jetBlue
20 Sep - 23 Sep	jetBlue
21 Sep - 24 Sep	jetBlue
22 Sep - 18 Oct	jetBlue
28 Sep - 10 Oct	jetBlue
20 Sep - 25 Sep	jetBlue
20 Sep - 26 Sep	jetBlue
20 Sep - 14 Oct	jetBlue
28 Sep - 04 Oct	jetBlue
29 Sep - 25 Oct	jetBlue
21 Sep - 28 Sep	jetBlue

Also check the deals for one-way flights from Washington 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 Washington to Frankfurt in September from $605

Return flights