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

Return flights

30 Sep - 14 Oct	Iberia
14 Sep - 14 Oct	Iberia
09 Sep - 25 Sep	Iberia
23 Sep - 30 Sep	Iberia
04 Sep - 24 Sep	Iberia
01 Sep - 08 Sep	Icelandair
22 Sep - 29 Sep	Iberia For Level
25 Sep - 30 Sep	Iberia
02 Sep - 08 Sep	Iberia For Level
15 Sep - 25 Sep	Icelandair
01 Sep - 10 Sep	Iberia For Level
03 Sep - 09 Sep	Iberia For Level
14 Sep - 14 Oct	Delta	direct
29 Sep - 06 Oct	United

Also check the deals for one-way flights from Boston to Milano 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 Milano in September from 275€

Return flights