Spirit Airlines, known for its bare-bones fares and bright yellow planes, has abruptly ended operations after failing to secure a last-minute $500 million bailout following years of financial difficulties and rising fuel costs. Major U.S. airlines are offering reduced fares and flexible travel options for stranded passengers and employees, while major U.s. carriers are capping or cutting ticket prices to help customers rebook flights canceled by Spirit's abrupt shutdown. The airline's demise could reshape the US airline industry, particularly in the budget travel segment, with analysts predicting that without Spirit's low pricing, fares on leisure-heavy routes may rise as competition diminishes. Other airlines are assisting in the relief efforts, including American Airlines, United, Southwest, and JetBlue.