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

Return flights

23 Sep - 23 Oct	Iberojet	direct
25 Sep - 23 Oct	Iberojet	direct
23 Sep - 14 Oct	Iberojet	direct
25 Sep - 14 Oct	Iberojet	direct
19 Sep - 27 Oct	Avianca
19 Sep - 21 Oct	Avianca
30 Sep - 21 Oct	Iberojet	direct
30 Sep - 13 Oct	Air Canada
30 Sep - 22 Oct	Air Canada
25 Sep - 28 Sep	Air Canada
26 Sep - 28 Sep	Air Canada
30 Sep - 15 Oct	Air Canada
16 Sep - 23 Sep	Air France
18 Sep - 29 Sep	Iberojet
20 Sep - 28 Sep	Vueling Airlines
22 Sep - 28 Sep	TAP
26 Sep - 29 Sep	Iberojet
20 Sep - 27 Sep	Vueling Airlines
18 Sep - 25 Sep	Air Europa
16 Sep - 22 Sep	Iberojet

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 $587

Return flights