Ryanair's net profit more than doubled in its April-June quarter on higher-than-expected last-minute fares and the timing of the Easter holidays, while bookings for rest of the summer are "robust", Europe's largest low-cost carrier said on Monday.

Ryanair, Boeing's biggest European customer, said it could delay deliveries of some 737 MAX aircraft as it holds out for a trade deal between the U.S. and the European Union. The airline, Europe's biggest by passenger numbers,