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“We went to the airport yesterday evening and we wanted to go to Amsterdam and we waited here about five hours,” he told Associated Press Television News. “We had to sleep at the airport because … hotels were full. “

Blandine Sabadie also found herself sleeping at the airport. She said passengers were escorted to an “improvised” area with portable beds, blankets and warm drinks.

Mr. Mariani, the French transport minister, said on France-Info radio that it is “unacceptable” that some 3,000 people were blocked at Charles de Gaulle airport over the weekend and called a meeting this week of airlines to find ways to improve communication with passengers.

The minister, explaining multiple delays around Europe, said that when a runway is closed for an hour the lost time cannot be reclaimed. “For each hour lost, it is some 70 to 80 flights that you can’t recover during the day,” he said.

Authorities in parts of western Germany banned trucks weighing more than 7.5 tons from highways as a safety measure.

In the Czech Republic eight regional railways were shut because of the weather but the international airport at Prague remained open. Schipol Airport in Amsterdam was also fully operational Monday after several days of delays.

Geir Moulson and Juergen Baetz in Berlin, Gabriele Steinhauser in Brussels, Elaine Ganley and Jeff Schaeffer in Paris contributed to this report.