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

Return flights

26 Sep - 06 Oct	Copa
08 Sep - 18 Sep	LATAM Airlines Group
08 Sep - 15 Sep	LATAM Airlines Group
11 Sep - 08 Oct	Copa
28 Sep - 05 Oct	LATAM Airlines Group
26 Sep - 05 Oct	Copa
24 Sep - 05 Oct	Copa
23 Sep - 03 Oct	Copa
12 Sep - 23 Sep	LATAM Airlines Group
23 Sep - 05 Oct	LATAM Airlines Group
18 Sep - 28 Sep	LATAM Airlines Group
06 Sep - 14 Sep	Sky Airline
23 Sep - 30 Sep	LATAM Airlines Group
06 Sep - 16 Sep	Sky Airline
11 Sep - 22 Sep	Copa
13 Sep - 31 Oct	Copa
12 Sep - 04 Oct	Copa
18 Sep - 26 Sep	LATAM Airlines Group
22 Sep - 05 Oct	LATAM Airlines Group
05 Sep - 12 Sep	LATAM Airlines Group

Also check the deals for one-way flights from Montevideo 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 Montevideo to San Jose in September from $405

Return flights