NEW : About 46 million flights delayed and More than 3,000 canceled . Reporter measures line more than a mile long at Midway airport . More than 3,000 people were expected to travel for Thanksgiving , the Chicago Tribune 's says . ` There was a period of time earlier this morning , between 6 a.m. Ninety percent of travelers were expected to go by road .
NEW : About 46 million flights delayed and More than 3,000 canceled . Reporter measures line more than a mile long at Midway airport . More than 3,000 people were expected to travel for Thanksgiving , the Chicago Tribune 's says . Ninety percent of travelers were expected to go by road .