Paris' airport authority has warned that overnight snowfall could cause significant delays tomorrow (Friday) at airports around the French capital, according to AP. The authority has urged passengers scheduled to leave from Charles de Gaulle and Orly airports to recheck their flight times with the airlines. The authority said in a statement today that airport staff was standing by to clear runways and aircraft of falling snow. France's national weather service has said snow is expected to blanket the Paris region overnight.