Even though we made it through the 495th day of January, the winter won't end. That's as good a reason as any to break up the interminable cold and misery by getting out of town.
This sale might help. Southwest has a three-day sale with one-way tickets starting at $49. Eight routes sport the $49 price tag, while loads of others carry discounted prices. You'll find some of the cheapest tickets on shorter routes, like the $97.96 round-trip flight highlighted below. Nonetheless, there are cheap flights all across the United States in the sale.
The availability varies by city, but the travel window on domestic flights is from February 20 through May 23, as long as you book before 11:59pm in the respective time zone of your origin city on Thursday, February 1. For international flights, that window is between April 3 and May 17.