Other than the rare nickel slot machines (which only exists in old school Las Vegas casinos), the best payout comes from the $5 slot machine, according to the Las Vegas Review-Journal. Casinos had a 5.46% win percentage in 2024. In comparison, the $25 slot machines had a 5.86% average when it came to casinos winning.
Most people don't expect to play an airport slot machine and win big but Brittany, a lucky woman who hails from Texas, won $643,435 at a Wheel of Fortune slot machine in Las Vegas' Harry Reid International Airport. The winning machine is located in Terminal 1, Gate A.