A major series of flight disruptions across European airports in April 2026, triggered by severe jet fuel shortages from the Middle East crisis—particularly the Iran war closing the Strait of Hormuz—alongside strikes in countries like Spain, Germany, Poland, and the UK, leading to thousands of delays and cancellations.

The event highlighted Europe's vulnerability to global supply chains, with warnings of ongoing cancellations into summer as airlines like Lufthansa, easyJet, Ryanair, and SAS slashed schedules amid rocketing fuel prices and limited reserves.