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

Return flights

24 Sep - 28 Sep	Copa
18 Sep - 22 Sep	Copa
24 Sep - 03 Oct	Copa
25 Sep - 05 Oct	Copa
29 Sep - 03 Oct	Copa
18 Sep - 22 Sep	Avianca	direct
26 Sep - 27 Sep	Avianca	direct
21 Sep - 28 Sep	Avianca	direct
24 Sep - 28 Sep	Avianca	direct
28 Sep - 08 Oct	Avianca	direct
29 Sep - 03 Oct	Avianca	direct
24 Sep - 03 Oct	Avianca	direct
27 Sep - 07 Oct	Avianca
26 Sep - 02 Oct	Copa

Also check the deals for one-way flights from Cartagena 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 Cartagena to San Jose in September from $294

Return flights