Cheapest return CUN–SJO flights, September

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

Return flights

21 Sep - 26 Sep Viva
21 Sep - 06 Oct Viva
21 Sep - 10 Oct Viva
28 Sep - 06 Oct Viva
28 Sep - 10 Oct Viva
19 Sep - 26 Sep Avianca
11 Sep - 13 Sep Aeromexico
20 Sep - 26 Sep Viva
20 Sep - 06 Oct Viva
20 Sep - 10 Oct Viva
13 Sep - 26 Sep Viva
24 Sep - 06 Oct Viva
24 Sep - 10 Oct Viva
03 Sep - 08 Sep Viva
03 Sep - 12 Sep Viva

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

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