And they aren't the only cities with hot deals, either. Here's a rundown of the comparable round-trip flights in early February from North American cities and their prices via Priceline.
The advantage of Priceline is that you can cancel a flight within 24 hours of booking it. (We'd also recommend doing a bit of digging through other sites like Google Flights, Momondo, and CheapFlights.com before you book, too, just to do your due diligence.) Keep in mind too that most of these aren't budget airlines, but full-service carriers like JetBlue, Avianca, LATAM, and more.
If you've always considered a vacation in Peru, you should definitely take advantage of this. And if Machu Picchu and Peruvian cuisine aren't enticing-enough draws, there's also this.