To a lot of people, $40 might be the cost of a nice meal, or an aggressive night at the local bar.
But today only, Frontier is offering $20 one-way flights on a number of their routes (and generally cheap fares on their other routes)…if you leave Tuesday, Wednesday, or Thursday.
For example, you can fly $40 roundtrip between San Francisco and Phoenix (though remember that Frontier has a number of fees that they add on, including for checked bags).
Naturally, given that Frontier is headquartered in Denver, you’ll have the widest variety of cheap flights to choose from if you’re flying to or from Denver:
And while people in the Western United States will benefit more from this deal, there are a few great East Coast fares, such as the following between New York and Denver for $168:
This sale goes until midnight tonight, but it’s likely that many of these routes will be sold out well in advance (some already are), so get on it soon, if you have that kind of flexibility!
If you found a great fare, feel free to post about it in the comments.