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

Return flights

06 Dec - 10 Dec	Delta
06 Dec - 24 Dec	Delta
08 Dec - 29 Dec	Delta
03 Dec - 10 Dec	Delta
16 Dec - 19 Jan	Air France
06 Dec - 14 Dec	Air Transat
04 Dec - 24 Dec	Delta
05 Dec - 13 Dec	Air Transat
16 Dec - 17 Jan	Air France
16 Dec - 13 Jan	Air France
05 Dec - 14 Dec	Air Transat
07 Dec - 16 Dec	KLM
01 Dec - 08 Dec	Air Transat
31 Dec - 26 Jan	Air Transat
16 Dec - 22 Jan	Air Canada
16 Dec - 09 Jan	Air Canada
15 Dec - 09 Jan	Air Canada
14 Dec - 09 Jan	Air Canada
15 Dec - 13 Jan	Air Canada
13 Dec - 09 Jan	easyJet

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 726€

Return flights