Santa Maria Airport (RIA) is a smaller airport in Brazil. The one and only destination from here is Porto Alegre (POA) with Azul where you can fly 3 days a week.
From RIA, you have 1 airline to 1 different destinations

If you are in need of a rental car, there are several options at RIA.
If you are arriving at Santa Maria Airport and want to go to the city, you have several options. You can take a bus, a taxi, or a rental car. The bus is the cheapest and most convenient option, as it runs frequently. The taxi is more expensive and may take longer depending on the traffic. The rental car gives you more flexibility, but you have to pay for parking and fuel.