Hook Field Municipal Airport is a city-owned public-use airport located two nautical miles (4 km) north of the central business district of Middletown, a city in Butler County, Ohio, United States. It has the longest runway of any non-towered airport in southwest Ohio.
In late August 2008 the airport gained some national prominence when the Republican vice presidential nominee Sarah Palin flew into Hook to later attend a Dayton campaign rally where she was announced as Senator John McCain's running mate.
For the 12-month period ending October 1, 2007, the airport had 40,050 aircraft operations, an average of 109 per day: 91% general aviation, 9% air taxi and <1% military. At that time there were 90 aircraft based at this airport: 96% single-engine, 2% multi-engine and 2% jet.