By Everett Potter

If you gear up for a delay each time you fly, you’re savvy indeed. Flight delays have become so common that more than 20 percent of all flights in the U.S. run late year after year. So the savviest travelers leave equipped with fully charged and programmed e-readers, snacks, and the patience to weather possible delays.

But which airlines should you fly — and which ones should you avoid?

Read my new Travel + Leisure story …