Cheapest return flights from Washington to Frankfurt in September from $635

Best time to book flights for Washington (IAD) to Frankfurt (FRA) flights at AirHint

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

Return flights

16 Sep - 30 Sep Scandinavian Airlines
17 Sep - 29 Sep Scandinavian Airlines
19 Sep - 03 Oct Turkish Airlines
25 Sep - 05 Oct Scandinavian Airlines
16 Sep - 30 Sep Lufthansa direct
19 Sep - 03 Oct Lufthansa direct
17 Sep - 29 Sep Lufthansa direct
21 Sep - 28 Sep United direct
25 Sep - 05 Oct Lufthansa direct

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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