Investors across the aviation sector have been spooked by Ryanair's profit warning.
Easyjet is down 5.7%, while British Airways-owner IAG is down more than 3%. Wizzair fell 4.8%, Air France 3.5% and Lufthansa 2.2%.
Ryanair has blamed strikes for lowering its profit guidance and outlook for future trading.
But it seems investors fear there could be more than industrial action behind Ryanair's weaker forecasts, possibly indicating a drop in business across the sector.