About half of scheduled air traffic in Europe is expected to operate on Tuesday because of the spread of volcanic ash from Iceland, an increase on previous days, European aviation control agency Eurocontrol said. Eurocontrol said in a statement it expected 14,000 flights to take place, compared with 27,000 to 28,000 that would normally be expected. On Monday, 67 percent of flights did not run, Reuters reported. "By the end of today, we expect that more than 95,000 flights in total will have been cancelled since Thursday," Eurocontrol said.