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

Return flights

20 Sep - 04 Oct	FrenchBee
06 Sep - 20 Sep	Ryanair
12 Sep - 27 Sep	Ryanair
05 Sep - 13 Sep	Fly Play
18 Sep - 01 Oct	Norse Atlantic Airways
22 Sep - 02 Oct	Ryanair
03 Sep - 19 Sep	Ryanair
13 Sep - 21 Sep	Ryanair
09 Sep - 02 Oct	easyJet
11 Sep - 20 Sep	Ryanair
05 Sep - 22 Sep	FrenchBee
10 Sep - 24 Sep	Wizz Air Malta
01 Sep - 30 Sep	Transavia France
13 Sep - 26 Sep	Ryanair
25 Sep - 19 Oct	Norse Atlantic Airways
26 Sep - 20 Oct	Icelandair
22 Sep - 02 Oct	Air France	direct
18 Sep - 01 Oct	Air France	direct
26 Sep - 20 Oct	Air France	direct

Also check the deals for one-way flights from Paris to San Jose in September.

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 September from $694

Return flights