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

Return flights

28 Sep - 07 Oct	Air Canada
10 Sep - 24 Sep	Air Canada
08 Sep - 14 Oct	Lufthansa
02 Sep - 08 Oct	Lufthansa
06 Sep - 20 Sep	Air Canada
24 Sep - 29 Sep	Air Canada
05 Sep - 27 Sep	Air Canada
05 Sep - 19 Oct	Air Canada
05 Sep - 31 Oct	Air Canada
03 Sep - 11 Oct	Lufthansa
04 Sep - 01 Oct	Lufthansa
01 Sep - 04 Sep	Air France
04 Sep - 08 Sep	Air France
02 Sep - 05 Sep	Air France
04 Sep - 27 Sep	Air France
03 Sep - 06 Sep	Air France
05 Sep - 07 Sep	Delta

Also check the deals for one-way flights from Boston 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 Boston to Casablanca in September from $443

Return flights