eight daily flights to and from Chicago Midway and Baltimore–Washington International Airport. Southwest's last day in Dayton was June 3, 2017. Today the airport covers , and has of runway. It is served by six passenger airlines and has sixteen non-stop destinations. The airport has an estimated $1 billion economic impact on the Dayton area economy. Construction projects In 2011, Dayton International Airport completed a new air traffic control tower. The tower is about high with a base building of office and operational space for FAA personnel. The switchover to the new tower was at midnight on June 4, 2011. Construction cost $21 million (the tower project's total cost was $30.6 million including equipment) and will eventually reduce the current staff of 38 controllers in Dayton to 12. The airport broke ground in April 2009 for a new multi-level parking garage, which opened in the summer of 2010. A parking lot improvement project began in October 2008 and provided for: (1) the construction of a new entrance/exit for a new "red" long term parking lot and economy parking lot; (2) reconfiguration and restriping of the existing credit card parking lot; (3) installation of revenue control equipment for the overflow parking lot; (4) upgrade of electrical and lighting within various parking lots. These improvements are to be completed in May 2009. The access road to the terminal has been undergoing several upgrades since October 2007 which involves the rehabilitation of Terminal Drive pavement, drainage system upgrades, installation of underground utilities and erection of new signage and other related roadway improvements. The airport began a multi-year project in October 2006 to the perimeter roadway network to provide access around the airfield and to enhance safety by eliminating vehicle crossing of runways and taxiways. The project was completed in November 2009. In June 2009, the airport completed a project to enhance safety by improving the 06R/24L runway safety area. Runway 6R pavement was extended by to connect to the taxiway pavement. In addition, a high-pressure gas transmission main and an service main were relocated from under the footprint of the runway extension. The installation of wildlife fencing, completed in May 2009, enhances airport safety by reducing the movement of wild animals on the airfield. In January 2018 the airport began another expansion focusing on the end of the airport with the ticketing counters and the parking garage. This work was completed in August