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

Return flights

09 Dec - 30 Dec	United
09 Dec - 30 Dec	Air France	direct
25 Dec - 16 Jan	Avianca
25 Dec - 16 Jan	Air France	direct
24 Dec - 05 Jan	United
19 Dec - 18 Jan	Iberia
21 Dec - 27 Dec	Avianca
25 Dec - 05 Jan	United
01 Dec - 31 Dec	KLM
18 Dec - 09 Jan	United
29 Dec - 04 Jan	Avianca
25 Dec - 05 Jan	Air France	direct
18 Dec - 09 Jan	Air France	direct
26 Dec - 04 Jan	Avianca
21 Dec - 27 Dec	Air France	direct
20 Dec - 29 Dec	Iberia
20 Dec - 29 Dec	Air France	direct

Also check the deals for one-way flights from Paris 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 Paris to San Jose in December from 836€

Return flights