Walton was the first person to chair the Northwest Arkansas Council and played a major role in the development of the Northwest Arkansas Regional Airport, which opened in 1998. At the time, the business and civic leaders of Northwest Arkansas Council found a need for the $109 million regional airport in their corner of the state. Walton provided $15 million in initial funding for construction. Her company, Llama Company, underwrote a $79.5 million bond. The Northwest Arkansas Regional Airport Authority recognized Walton's contributions to the creation of the airport and named the terminal the Alice L. Walton Terminal Building. She was inducted into the Arkansas Aviation Hall of Fame in 2001.
In the late 1990s, Llama Co. closed and, in 1998, Walton moved to a ranch in Millsap, Texas, named Walton's Rocking W Ranch. An avid horse-lover, she was known for having an eye for determining which 2-month-olds would grow to be champion cutters. Walton listed the farm for sale in 2015 and moved to Fort Worth, Texas, citing the need to focus on the Crystal Bridges Museum of American Art, the Bentonville, Arkansas, art museum she founded that opened in 2011.