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

Return flights

01 Dec - 10 Dec	SWISS
02 Dec - 09 Dec	United
09 Dec - 23 Dec	KLM
02 Dec - 09 Dec	Iberojet	direct
08 Dec - 18 Dec	KLM
02 Dec - 13 Dec	Iberia	direct
06 Dec - 30 Dec	Iberia	direct
05 Dec - 09 Dec	TAP
16 Dec - 20 Jan	TAP
11 Dec - 27 Dec	KLM
05 Dec - 13 Dec	Iberia	direct
16 Dec - 13 Jan	TAP
30 Dec - 17 Jan	United
30 Dec - 16 Jan	United
28 Dec - 10 Jan	TAP
31 Dec - 10 Jan	TAP
29 Dec - 10 Jan	TAP
16 Dec - 10 Jan	TAP
28 Dec - 16 Jan	TAP
28 Dec - 11 Jan	TAP

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 548€

Return flights