MILAN (Reuters) - Shares in Ryanair fell more than 4% on Tuesday, leading the broader European airline sector lower after CEO Michael O'Leary said ticket prices were likely going rise by less this summer than previously expected.

Before O'Leary's remarks, Ryanair shares were trading up more than 2%. Stock in other airlines also turned lower, with EasyJet last down 5% and Lufthansa falling more than 2.4%.

(Reporting by Danilo Masoni and Anna Pruchnicka; Editing by Amanda Cooper)