In Chicago, area interstates may not only see one of the worst traffic jams over the holidays, the city also may come in second place for longest commute times to a major airport, analysts predict. The absolute worst time to take the Kennedy Expressway between downtown and O’Hare International Airport is 4:30 p.m. to 5:30 p.m Tuesday, when it could take an hour and 14 minutes, the analysis shows. Only a trip to New York’s Kennedy International Airport — the same day and around the same time of day — is longer at nearly two hours.