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

Return flights

08 Dec - 15 Dec	KLM
08 Dec - 23 Dec	KLM
07 Dec - 15 Dec	KLM
16 Dec - 21 Jan	Iberia	direct
07 Dec - 11 Dec	Iberia
06 Dec - 16 Dec	Iberia	direct
04 Dec - 15 Dec	Air France
04 Dec - 20 Jan	Air France
11 Dec - 20 Jan	Wizz Air Malta
11 Dec - 21 Jan	Wizz Air Malta
11 Dec - 23 Dec	KLM
06 Dec - 23 Dec	KLM
08 Dec - 16 Dec	Iberia	direct
07 Dec - 13 Dec	Iberia
16 Dec - 17 Jan	Iberia	direct
16 Dec - 15 Jan	Iberia	direct
11 Dec - 21 Jan	Iberia	direct
11 Dec - 20 Jan	Iberia	direct
30 Dec - 27 Jan	Iberia	direct
04 Dec - 20 Jan	Iberia	direct

Also check the deals for one-way flights from Madrid to San Jose in December.

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 December from $670

Return flights