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

Return flights

27 Sep - 04 Oct	Iberia
18 Sep - 23 Sep	easyJet
27 Sep - 11 Oct	Iberia
18 Sep - 25 Sep	easyJet
20 Sep - 28 Sep	Condor
27 Sep - 28 Sep	easyJet
19 Sep - 28 Sep	easyJet
18 Sep - 22 Sep	easyJet
22 Sep - 29 Sep	ITA Airways
20 Sep - 27 Sep	Condor
17 Sep - 25 Sep	easyJet
20 Sep - 22 Sep	Condor
29 Sep - 05 Oct	ITA Airways
22 Sep - 06 Oct	ITA Airways
21 Sep - 05 Oct	Iberia
25 Sep - 02 Oct	Lufthansa

Also check the deals for one-way flights from Milan 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 Milan to San Juan in September from 655€

Return flights