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

Return flights

22 Sep - 29 Sep	Iberia
25 Sep - 30 Sep	Wizz Air Malta
20 Sep - 27 Sep	Wizz Air Malta
20 Sep - 25 Sep	Wizz Air Malta
15 Sep - 21 Sep	Iberia
04 Sep - 08 Sep	Wizz Air Malta
10 Sep - 30 Sep	Wizz Air Malta
26 Sep - 05 Oct	Air France
30 Sep - 11 Oct	Air Dolomiti
09 Sep - 15 Sep	KLM
01 Sep - 09 Sep	Wizz Air Malta
01 Sep - 07 Sep	Air France

Also check the deals for one-way flights from Milano to San Juan 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 Milano to San Juan in September from $629

Return flights