It's the first test of the airport's "use-it-or-lose-it" formula adopted in the lease deal that ushered in the $6.1 billion terminal project.

The time that passed was not good to Spirit. The airline was bleeding money and shrinking, and it was barreling toward bankruptcy. Apparently last summer, Frontier saw this and decided to take another ...

Frontier Airlines will have to compete with American Airlines and United Airlines on two out of the three routes.