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

Return flights

29 Sep - 20 Oct	Scandinavian Airlines
05 Sep - 21 Sep	TAP
12 Sep - 28 Sep	TAP
15 Sep - 23 Sep	TAP
18 Sep - 05 Oct	TAP
19 Sep - 05 Oct	TAP
17 Sep - 05 Oct	TAP
17 Sep - 24 Sep	Lufthansa
01 Sep - 28 Sep	Lufthansa
21 Sep - 04 Oct	Lufthansa
25 Sep - 26 Oct	Lufthansa
14 Sep - 24 Sep	Lufthansa
15 Sep - 24 Sep	Lufthansa
22 Sep - 29 Sep	Austrian Airlines
22 Sep - 10 Oct	Austrian Airlines
10 Sep - 18 Sep	Lufthansa
16 Sep - 30 Sep	British Airways

Also check the deals for one-way flights from Berlin to Washington 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 Berlin to Washington in September from $465

Return flights