Air France-KLM said a strike by crew members forced cancellation of 20 percent of flights on Saturday.
Air France-KLM, the national carriers of France and the Netherlands respectively, said 200 flights were cancelled out of 1,000 today following announcements by three unions of flight attendants that they would stage a strike in protest of reducing the number of crews on each flight.
The company said in a statement passengers might not travel for the next five days, the period of the strike announced by the unions.
The company said it would operate 80 percent of flights tomorrow with delay of many others.
The strike was organized after Air France-KLM announced 195 million euros in losses in the first quarter with uncertain outlook for rest of the year.