Travelling from most locations, it is best to book your flight to Porto Alegre during the month of September for the best deal, although there are other times of the year which offer great deals as well.
Most flyers found that booking flight tickets 60 days in advance of their planned departure date is, on average, the best time to get cheap flights to Porto Alegre.
Most of our users find that booking their departure to Porto Alegre on a Tuesday is the cheapest. Conversely, departing on a Sunday seems to be the most expensive.
In general, when looking for the cheapest flight to Porto Alegre, our data indicates that evening flights are the most cost-effective. afternoon flights tend to be the most expensive.