Cheapest return flights from Washington to Frankfurt in September from $620

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

Return flights

22 Sep - 17 Oct Scandinavian Airlines
29 Sep - 02 Oct Scandinavian Airlines
30 Sep - 07 Oct Scandinavian Airlines
28 Sep - 10 Oct Turkish Airlines
22 Sep - 30 Sep Turkish Airlines
30 Sep - 25 Oct Turkish Airlines
23 Sep - 18 Oct Turkish Airlines
29 Sep - 14 Oct TAP
30 Sep - 14 Oct Turkish Airlines
27 Sep - 11 Oct Turkish Airlines
26 Sep - 03 Oct Turkish Airlines
23 Sep - 28 Sep Turkish Airlines
25 Sep - 28 Sep Turkish Airlines
25 Sep - 30 Sep Turkish Airlines
17 Sep - 23 Sep Turkish Airlines
17 Sep - 29 Sep SWISS
17 Sep - 25 Sep Turkish Airlines
18 Sep - 23 Sep Turkish Airlines
20 Sep - 27 Sep Turkish Airlines
18 Sep - 27 Sep Turkish Airlines

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

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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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