AirHint found the following cheapest return flights from Boston (BOS) to Casablanca (CMN) in May 2026 (see full year).

Return flights

10 May - 10 Jun	American Airlines
09 May - 22 May	Air Canada
12 May - 25 May	Air Canada
13 May - 25 May	Air Canada
13 May - 20 Jun	Air Canada
13 May - 13 Jun	Iberia
27 May - 04 Jun	Air Canada
14 May - 04 Jun	Air Canada
27 May - 03 Jun	Air Canada
22 May - 05 Jun	Air Canada
26 May - 08 Jun	Iberia
18 May - 10 Jun	Lufthansa
14 May - 20 Jun	Air Canada
22 May - 29 May	Air Canada

Also check the deals for one-way flights from Boston to Casablanca in May.

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 May from $417

Return flights