AirHint found the following cheapest return flights from Sao Paulo (GRU) to Montevideo (MVD) in September 2025 (see full year).

Return flights

12 Sep - 14 Sep	LATAM Airlines Group
04 Sep - 14 Sep	Aerolineas Argentinas
04 Sep - 10 Sep	Aerolineas Argentinas
01 Sep - 05 Sep	Aerolineas Argentinas
05 Sep - 08 Sep	Aerolineas Argentinas
04 Sep - 07 Sep	Aerolineas Argentinas
04 Sep - 12 Sep	Aerolineas Argentinas
04 Sep - 08 Sep	Aerolineas Argentinas
03 Sep - 08 Sep	Aerolineas Argentinas
01 Sep - 08 Sep	Aerolineas Argentinas
26 Sep - 03 Oct	Aerolineas Argentinas

Also check the deals for one-way flights from Sao Paulo to Montevideo 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 Sao Paulo to Montevideo in September from $293

Return flights