AirHint found the following cheapest return flights from Rosario (ROS) to Sao Paulo (GRU) in January 2026 (see full year).

Return flights

08 Jan - 15 Jan	Aerolíneas Argentinas
04 Jan - 24 Jan	LATAM Airlines Group
31 Jan - 15 Feb	Aerolíneas Argentinas
24 Jan - 31 Jan	Aerolíneas Argentinas
31 Jan - 15 Feb	GOL Linhas Aéreas	direct
31 Jan - 14 Feb	Aerolíneas Argentinas

Also check the deals for one-way flights from Rosario to Sao Paulo in January.

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 Rosario to Sao Paulo in January from 291€

Return flights