AirHint found the following cheapest return flights from Washington (DCA) to Casablanca (CMN) in September 2025 (see full year).

Return flights

15 Sep - 22 Oct	Air Canada
05 Sep - 12 Sep	Delta
05 Sep - 03 Oct	KLM
03 Sep - 14 Sep	Delta
02 Sep - 09 Sep	KLM
26 Sep - 05 Oct	KLM
18 Sep - 20 Oct	jetBlue
19 Sep - 05 Oct	jetBlue
10 Sep - 17 Sep	British Airways
25 Sep - 10 Oct	Royal Air Maroc
01 Sep - 05 Oct	Royal Air Maroc
24 Sep - 01 Oct	Royal Air Maroc
01 Sep - 10 Sep	Royal Air Maroc
07 Sep - 28 Sep	Royal Air Maroc
05 Sep - 14 Sep	Royal Air Maroc
02 Sep - 29 Oct	Royal Air Maroc
01 Sep - 24 Oct	Royal Air Maroc
01 Sep - 21 Sep	Royal Air Maroc
17 Sep - 28 Sep	Royal Air Maroc
13 Sep - 28 Sep	Royal Air Maroc

Also check the deals for one-way flights from Washington to Casablanca 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 Washington to Casablanca in September from $760

Return flights