Saturday’s shutdown of Spirit — the pioneering budget airline that reshaped low-cost travel — has stranded thousands of passengers nationwide.

Spirit Airlines, the pioneering discount airline that shook up the budget travel business, is shutting down its operations.

Now that the low-cost U.S. carrier has ceased operations and will begin liquidating its assets, here's what passengers can expect.

The budget-friendly carrier's sudden suspension of all operations marks the first time in 25 years a major U.S. airline has ...