AirHint found the following cheapest return flights from Madrid (MAD) to San Jose (SJO) in September 2025 (see full year).

Return flights

18 Sep - 27 Sep	Lufthansa
26 Sep - 11 Oct	Air Canada
11 Sep - 19 Sep	Air Canada
11 Sep - 24 Sep	Air Canada
03 Sep - 24 Sep	Air France
04 Sep - 25 Sep	Air France
18 Sep - 24 Sep	Air France
12 Sep - 25 Sep	Air France
10 Sep - 25 Sep	Air France
03 Sep - 10 Oct	Air France
12 Sep - 04 Oct	Air France
18 Sep - 02 Oct	Air France
18 Sep - 04 Oct	Air France
16 Sep - 27 Sep	SWISS
12 Sep - 28 Sep	Air Canada
19 Sep - 04 Oct	Air Canada
27 Sep - 04 Oct	Air Canada
29 Sep - 11 Oct	KLM
12 Sep - 02 Oct	Air France
24 Sep - 27 Oct	Avianca

Also check the deals for one-way flights from Madrid 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 Madrid to San Jose in September from 515€

Return flights