AirHint found the following cheapest return flights from Milan (LIN) to San Jose (SJO) in September 2026 (see full year).

Return flights

12 Sep - 26 Sep	Iberia
04 Sep - 18 Sep	Air France
19 Sep - 03 Oct	Air France
23 Sep - 30 Sep	KLM
02 Sep - 07 Oct	Delta
05 Sep - 19 Sep	Air France
01 Sep - 10 Sep	Delta
05 Sep - 15 Sep	Lufthansa
01 Sep - 15 Sep	Delta
26 Sep - 10 Oct	Iberia
07 Sep - 20 Sep	ITA Airways
23 Sep - 23 Sep	Air France

Also check the deals for one-way flights from Milan to San Jose 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 Jose in September from $815

Return flights