In general, when booking your flight to Porto Alegre, March is the cheapest month on average.
From most locations, to find the best deals on airfare, our data shows that users booking 52 days before flying found the cheapest flight to Porto Alegre.
Most of our users find that booking their departure to Porto Alegre on a Monday is the cheapest. Conversely, departing on a Sunday seems to be the most expensive.
Generally, when visiting Porto Alegre, midday flights represent the best value. afternoon flights are likely to have higher prices.