Frontier will again offer an annual pass for unlimited flights. From black outs to presale information, here's how it works and what to know before you buy.

Frontier Airlines is offering an all-you-can-fly pass for $299—but only a limited number. Got someone with wanderlust on their holiday wish list? Frontier Airlines is once again offering an all-you-can-fly pass for a full year—and this year,

The annual pass offers unlimited flights, but there are blackout dates and other restrictions you should know about before signing up.