Elevated jet fuel prices, driven by Middle East supply disruptions, represent the dominant catalyst pressuring U.S. and European carriers as of mid-2026. The industry halved its 2026 net profit forecast to roughly $23 billion amid costs near $4.20–$4.30 per gallon, with ultra-low-cost carriers facing the sharpest margin compression. JetBlue carries approximately $9 billion in debt and faces analyst-assessed bankruptcy odds above 75 percent by 2027, while Frontier contends with $800 million in annual leases plus $1.4 billion in aircraft commitments. Spirit Airlines already entered liquidation in May after earlier Chapter 11 proceedings. Legacy carriers such as American, United, and Delta continue reporting record quarterly revenues and positive adjusted earnings despite fuel headwinds, supported by stronger balance sheets and pricing power. Key near-term resolution factors include third-quarter fuel hedging outcomes, traffic data, and any additional regulatory or financing developments before year-end.