Ryanair publicly called on the European Commission Thursday to reform EU Air Traffic Control services as strikes by French ATC employees have canceled flights for more than 30,000 people.

Further disruption to flight schedules is possible today due to another day of Air Traffic Control strikes in France and also in Finland.

A walkout by French air traffic controllers to protest against staff shortages and ageing equipment forced airlines to cancel hundreds of flights on Thursday, just as the summer season gets under way.