how long is the bus ride from downtown chicago to ohare airport tonight at 7pm
[IN:GET_ESTIMATED_DURATION how long is the [SL:METHOD_TRAVEL bus ] ride from [SL:SOURCE downtown chicago ] to [SL:DESTINATION [IN:GET_LOCATION [SL:POINT_ON_MAP ohare airport ] ] ] [SL:DATE_TIME_DEPARTURE tonight at 7 pm ] ]