Spirit Airlines has shut down operations, ending the career of one of the United States' largest ultra-low-cost carriers and leaving travelers scrambling for alternative flights. CEO Dave Davis confirmed the closure, marking the end of a prolonged financial deterioration that included a bankruptcy filing and failed attempts to stabilize the airline's balance sheet.

The collapse has triggered a bipartisan blame game in Washington. Republicans and Democrats have traded accusations over which administration's policies contributed most to Spirit's failure, with the airline's fate becoming an unexpected flashpoint in broader debates about antitrust enforcement, aviation regulation, and economic stewardship.

A central point of contention is the Biden administration's Department of Justice decision to block Spirit's proposed merger with JetBlue. Supporters of the merger argue that the combination would have given Spirit the financial backing needed to survive, while critics of the deal contend it would have reduced competition and harmed consumers. The blocked merger left Spirit without a clear path to solvency.

The shutdown is having tangible effects on travelers and the broader aviation industry. Passengers holding Spirit tickets have been left without recourse in many cases, and the disappearance of a major budget carrier is expected to reduce competitive pressure on fares in certain markets, potentially driving up costs for price-sensitive fliers.

Political figures including Senator Elizabeth Warren have entered the debate, with critics accusing her of mischaracterizing her role and the policy record surrounding Spirit's collapse. The dispute underscores how the airline's failure has become a proxy for larger arguments about the proper scope of antitrust enforcement and government intervention in private industry.