The secret to saving on your next flight is this on-sale app

TL;DR: Get a lifetime of flight savings with a Matt's Flights Premium Plan, on sale for $79.97 until July 21.

Planning a getaway? You probably started looking up flights and immediately slammed your laptop closed. But fear not, your secret weapon to saving on airfare has arrived: Matt's Flights.

Matt's Flights is an alert service that sends flight deals straight to your inbox based on the airports of your choosing. Through July 21, a lifetime subscription (only pay once!) to Premium...