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

Return flights

09 Sep - 20 Sep	Air France
12 Sep - 20 Sep	Air France
09 Sep - 15 Sep	Air France
02 Sep - 15 Sep	Air France
01 Sep - 15 Sep	Air France
06 Sep - 22 Sep	Air France
08 Sep - 24 Sep	Air France
01 Sep - 24 Sep	Air France
19 Sep - 25 Sep	Air France
03 Sep - 19 Sep	Air France
28 Sep - 18 Oct	KLM
17 Sep - 01 Oct	Delta
17 Sep - 01 Oct	Iberojet	direct
21 Sep - 03 Oct	KLM
28 Sep - 18 Oct	Iberia	direct
21 Sep - 03 Oct	Iberia	direct
26 Sep - 10 Oct	Iberojet	direct

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 548€

Return flights