The collapse of Spirit Airlines is expected to raise fares, shift routes and spark competition among rivals.

Spirit Airlines' collapse will give some carriers more pricing power as they race to capture Spirit's customers.

After a government bailout fell through, Spirit made plans to close, and is expected to sell off planes and wind down operations.

The budget airline knew on Thursday it couldn't be saved, but waited until early Saturday when all its planes were on the ground to make the announcement.

Lousy service, not the Iran war, killed Spirit Airlines. Spirit was doomed to fail because of mismanagement, deep financial problems, and – crucially – its reputation for poor customer service. The spike in jet fuel prices during the war just accelerated Spirit’s inevitable demise.

Spirit Airlines shut down before dawn on Saturday ending its run as the most famous U.S. discount airline.

Although Spirit Airlines went out of business, its co-branded Free Spirit credit cards will still work to make purchases.

Loyal customers who amassed thousands of points through flight purchases and credit-card swipes might not see a penny in compensation for their accumulated rewards.