Michael O'Leary, chief executive of Europe's largest airline, told a Brussels press conference that European air fares will rise 10-20% in 2027 — what he called the biggest increase in European aviation history. The driver is simple: jet fuel hedging contracts that shielded carriers through 2026 expire next year, exposing them to spot prices roughly double their locked rates. The numbers are stark. Ryanair entered the Iran conflict 80% hedged at $67 a barrel for 2026. For 2027, it holds hedging on just 15% of fuel requirements at $85 a barrel — while spot jet fuel hovers near $150+. IATA had already estimated jet fuel would average $152 a barrel across 2026, up 70% from $90 in 2025, halving industry profitability. The 2027 exposure is far worse. Ryanair is not alone in its nakedness. O'Leary said most European carriers face similar hedging cliffs. EasyJet reported a £105 million annual rise in fuel costs in July and disclosed hedging of 62% for H1 2027 and just 37% for H2 — a declining protection curve. EasyJet has already cut 700,000 seats from its winter schedule to conserve fuel. The structural picture is one of an industry that successfully bought time with hedging contracts but now faces the full weight of a geopolitical fuel shock with no buffer. O'Leary explicitly predicted airline bankruptcies and takeovers as weaker carriers fail to pass costs through to passengers or absorb them on thinner margins. The question is not whether fares rise, but whether demand survives the price level. Passenger surveys show travellers are braced for higher fares and willing to spend more — for now. But no one knows the elasticity ceiling: the point at which consumers stop flying rather than pay. Airlines are caught between cost-push inflation they cannot hedge away and demand destruction they cannot predict. O'Leary underscored the dynamic by announcing the immediate cut of 20 routes and more than one million seats from Belgium, triggered by the federal government's increase of its aviation tax from €2 to €7 in January. Even small regulatory cost additions now land on an industry with no margin for additional friction. The 2027 fare shock is a textbook extraction cascade: a geopolitical conflict raises input costs, hedging expiration concentrates the blow into a single calendar year, and passengers absorb the full pass-through. The only question is whether consolidation produces a more resilient industry afterward — or a more concentrated one with even greater pricing power.