American: Normal schedule days away — chicagotribune.com The number of canceled American flights stands at more than 3,000 since late Tuesday, wreaking havoc at the airline’s hubs in Chicago and Dallas and eroding its profits at a time the industry is hurting because of high oil prices and economic worries. Chief Executive Gerard Arpey said the costs to the airline will run into the “tens of millions of dollars” from the disruption of service, but he said American can withstand the loss. The American terminal at O’Hare International Airport was calmer Thursday, despite 124 cancellations, as passengers had more notice…