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

Return flights

05 Dec - 16 Dec	Viva	direct
01 Dec - 16 Dec	Viva	direct
08 Dec - 16 Dec	Viva	direct
05 Dec - 13 Dec	Viva	direct
05 Dec - 20 Dec	Viva	direct
01 Dec - 13 Dec	Viva	direct
01 Dec - 20 Dec	Viva	direct
01 Dec - 06 Dec	Viva	direct
08 Dec - 13 Dec	Viva	direct
08 Dec - 20 Dec	Viva	direct
22 Dec - 10 Jan	Viva	direct
28 Dec - 03 Jan	Aeromexico
26 Dec - 02 Jan	Copa

Also check the deals for one-way flights from Monterrey 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 Monterrey to San Jose in December from 203€

Return flights