The collapse of the US-based Spirit Airlines may mark the end of an era for travelers with a certain financial sensibility. But if you’ve been snagged in their now-defunct flight schedule, here are some things to know on how to get home, and get whole. Many airlines that used to compete with Spirit are now parachuting in with deals to save their travelers. Airlines including American Airlines, United Airlines, Delta Air Lines, JetBlue Airways, Frontier Airlines and Southwest Airlines are capping or reducing ticket prices for people to book new flights.