American Airlines from 11JUN14 to 18AUG14 plans to operate Airbus A319 aircraft on Miami – Chicago service, as per 08JAN14 GDS timetable/inventory display. However, currently the A319 aircraft is scheduled to operate on one-way basis, replacing Boeing 767-300ER. Planned operational schedule as follow.
AA040 MIA1155 – 1405ORD 319 D
Further changes to planned operations remain highly possible.