The French civil aviation agency said on Tuesday it had asked airlines to reduce flights at Paris' airports by 25% on July 3 following notification of a strike by air traffic controllers. The agency said it had also asked airlines to reduce flights from Nice,

A walkout by air traffic controllers on 3 and 4 July could mean chaos at many French airports and further afield. View on euronews

Flights crossing France’s airspace, even those not destined for the country, faced delays and rerouting at the start of the summer vacation period.