Voopter

Voopter is the leading flight metasearch in Brazil, with more than 2 million users and 160 thousands transactions per month, and presents the best fares available both in airlines and online travel agencies. Available for free on the web and on iOS and Android systems, it has a unique multi-dates calendar, where you can select up to 4 days for departure and 4 more for return, and the system shows you the cheapest combination for your trip. In addition, Voopter also offers the user the possibility to create alerts, which generates notifications when the ticket of her/his interest is within the amount she/he is willing to pay.