AirHint found the following cheapest return flights from Paris (PAR) to San Jose (SJO) in September 2026 (see full year).

Return flights

11 Sep - 25 Sep	Air Transat
11 Sep - 18 Sep	Air Transat
28 Sep - 04 Oct	Delta
02 Sep - 16 Sep	Avianca
01 Sep - 16 Sep	Avianca
09 Sep - 19 Sep	Avianca
03 Sep - 21 Sep	Avianca
01 Sep - 30 Sep	Avianca
19 Sep - 27 Sep	Avianca
21 Sep - 30 Sep	Avianca
10 Sep - 17 Sep	Avianca
21 Sep - 03 Oct	Avianca
21 Sep - 03 Oct	Air France	direct
28 Sep - 04 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 744€

Return flights