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

Return flights

02 Sep - 15 Sep	Air France
15 Sep - 29 Sep	Iberojet	direct
08 Sep - 19 Sep	Iberojet	direct
01 Sep - 15 Sep	Iberojet	direct
09 Sep - 19 Sep	Air France
13 Sep - 04 Oct	Air France
04 Sep - 21 Sep	Delta
07 Sep - 21 Sep	Delta
01 Sep - 13 Sep	Air France
05 Sep - 18 Sep	Air France
03 Sep - 12 Sep	Iberojet	direct
13 Sep - 04 Oct	Iberia	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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from Madrid to San Jose in September from $663

Return flights