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

Return flights

08 Dec - 14 Dec	easyJet
10 Dec - 24 Dec	Delta
06 Dec - 27 Dec	Delta
28 Dec - 18 Jan	Delta
01 Dec - 08 Dec	Air Canada
07 Dec - 15 Dec	Avianca
06 Dec - 15 Dec	Avianca
01 Dec - 14 Dec	United
05 Dec - 13 Dec	United
10 Dec - 08 Jan	United
04 Dec - 13 Dec	United
03 Dec - 17 Dec	SWISS
01 Dec - 10 Jan	United
26 Dec - 16 Jan	United
25 Dec - 12 Jan	United
28 Dec - 11 Jan	Delta
29 Dec - 11 Jan	British Airways
26 Dec - 08 Jan	United
26 Dec - 07 Jan	United
27 Dec - 10 Jan	United

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 $798

Return flights