Even if you're saving all your pennies for a trip to space (whenever that starts happening), your plans probably wouldn't be derailed by taking a cheap weekend away with this low-cost sale from budget carrier Frontier.
The airline is having a sale featuring $20 one-way flights, with the low fare available in both directions for lots of routes. If you're fortunate enough to be on one of those routes, your round-trip ticket could cost as little as $38.40.
Cities with $20 fares include Albuquerque, Atlanta, Austin, Cincinnati, Denver, Detroit, Grand Rapids, Long Island, Minneapolis, New Orleans, Orlando, Philadelphia, Providence, and Raleigh. You'll also find sale fares for $49 or less out of Buffalo, Charleston, Chicago, Cleveland, Colorado Springs, Indianapolis, Jacksonville, Kansas City, Las Vegas, Memphis, Miami, Milwaukee, Oklahoma City, Omaha, Reno, San Diego, San Juan, Seattle, Tampa, Trenton, Washington DC, and many other cities.