Ryanair has renewed its call for urgent reform to Europe’s air traffic control (ATC) systems as strikes by French ATC staff extend into a fourth consecutive day. The budget airline says more than 400 of its flights have been cancelled this week, which has affected over 70,000 passengers during the height of the summer travel season.

A strike by French air traffic controllers entered its second day on Friday, leaving many passengers stranded at the start of Europe's peak travel season.Civil aviation agency DGAC told airlines to cancel 40% of flights at the three main Paris airports on Friday because of the strike,

Airlines across Europe have canceled hundreds of flights on the second day of an air traffic controllers’ strike in France that’s causing chaos just as the busiest travel season of the year gets underway.