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

Return flights

12 Sep - 26 Sep	Air France
04 Sep - 25 Sep	Air France
18 Sep - 25 Sep	Air France
11 Sep - 27 Sep	Air France
18 Sep - 24 Sep	Air France
12 Sep - 25 Sep	Air France
09 Sep - 21 Sep	Air Canada
03 Sep - 24 Sep	Air France
11 Sep - 24 Sep	Air France
09 Sep - 19 Sep	Air Canada
24 Sep - 08 Oct	Air France
23 Sep - 04 Oct	Air Canada
25 Sep - 02 Oct	Air France
16 Sep - 02 Oct	SWISS
23 Sep - 14 Oct	SWISS
26 Sep - 05 Oct	Air Canada
25 Sep - 05 Oct	Air Canada
13 Sep - 11 Oct	Air Canada
04 Sep - 09 Oct	SWISS
30 Sep - 11 Oct	Air Canada

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 519€

Return flights