The Globe and Mail reports in its Friday, Aug. 11, edition that almost half of Air Canada's flights arrived late in July, the poorest showing of the 10 largest airlines in North America. The Globe's Eric Atkins writes that 51 per cent of Air Canada's flights arrived at the gate within 15 minutes of the scheduled hour, according to aviation data company Cirium. WestJet Airlines Ltd. placed seventh in Cirium's monthly report scheduled to be released on Thursday. U.S. carriers Alaska Airlines and Delta Air Lines lead the list, arriving as scheduled 82 and 79 per cent of the time. Cirium ranks the 10 biggest airlines in a given region, based on flights and capacity. Of the 751,000 North American flights tracked in July, just 66 per cent arrived on time. This compares with 82 per cent globally, 74 per cent in Europe, 76 per cent in Asia-Pacific and 81 per cent in Latin America. Chile's LATAM Airlines leads the global list, with an on-time score of 85 per cent. The lagging performance in North America comes after prolonged shortages of air traffic controllers, baggage handlers and pilots. Air Canada finished at the bottom of Cirium's North American list in June, as well.