Minneapolis-St. Paul to Atlanta

Nonstop Frontier flights from MSP to Atlanta are running about $80 round trip, versus the roughly $488 this route usually commands, an 84 percent drop. It is a single travel date rather than a flexible window, so it rewards travelers who can move fast, and Atlanta works well as an easy weekend trip or a jumping-off point for the Southeast. Pricing this far under the usual floor means it could vanish or reprice at any time.