South Alabama Regional Airport at Bill Benton Field (FAA LID: 79J), formerly known as Andalusia-Opp Airport, is a public use airport in Covington County, Alabama, United States. It is located four nautical miles (5 mi, 7 km) east of the central business district of Andalusia and about 9 miles (14 km) west of Opp. The airport is governed by the South Alabama Regional Airport Authority, with members appointed by the Andalusia City Council, the Opp Council, and the Covington County Commission.

This airport is included in the FAA's National Plan of Integrated Airport Systems for 2011–2015 and 2009–2013, both of which categorized it as a general aviation facility.

The Andalusia-Opp Airport Authority voted in May 2007 to change the name of the airport to South Alabama Regional Airport. It was also announced the same month that the airport had received a grant from the U.S. Department of Transportation to extend the runway from 5,000 to 6,000 feet (1,800 m).