Cheapest return flights from Washington to Frankfurt in September from $611

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

09 Sep - 23 Sep Aer Lingus
16 Sep - 07 Oct Aer Lingus
17 Sep - 08 Oct Scandinavian Airlines
16 Sep - 08 Oct Aer Lingus
16 Sep - 09 Oct Aer Lingus
17 Sep - 09 Oct Scandinavian Airlines
12 Sep - 19 Sep Aer Lingus
06 Sep - 20 Sep Icelandair
15 Sep - 22 Sep TAP
18 Sep - 22 Sep TAP
01 Sep - 18 Sep Scandinavian Airlines
19 Sep - 22 Sep Iberia
10 Sep - 18 Sep Lufthansa direct
01 Sep - 18 Sep Lufthansa direct
09 Sep - 23 Sep Lufthansa direct
17 Sep - 09 Oct Lufthansa direct
16 Sep - 09 Oct Lufthansa direct
16 Sep - 08 Oct Lufthansa direct
17 Sep - 08 Oct Lufthansa direct

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

Skyscanner

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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