PARIS (AP) — Air France has warned about potential last-minute flight cancellations and delays due to a seven-day strike by cabin crew.

The company has cancelled 5 percent of its long-distance flights Monday, less than in previous days.

Air France plans to operate 80 percent of domestic flights and European flights to and from Paris Charles-de-Gaulle airport.

Cabin crew unions have called for a strike from July 27 to Aug. 2 —a period of high traffic due to summer vacation— to protest against further decreases in the number of crew members.