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

Return flights

30 Sep - 13 Oct	TAP
17 Sep - 29 Sep	TAP
30 Sep - 07 Oct	TAP
13 Sep - 20 Sep	TAP
14 Sep - 21 Sep	TAP
18 Sep - 23 Sep	TAP
08 Sep - 20 Sep	TAP
06 Sep - 14 Sep	TAP
13 Sep - 26 Sep	TAP
15 Sep - 29 Sep	Lufthansa

Also check the deals for one-way flights from Munich 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 Munich to Washington in September from $358

Return flights