South Point Casino owner Michael Gaughan has operated the slot machine concession at Harry Reid International Airport for 36 years under a contract with the Clark County Department of Aviation.

As the airport expanded over the past three decades, Gaughan has added both games and staff.

Today, the 1,430 slot machines throughout the airport rival the gaming at small Strip resorts. The owner of the South Point Hotel and Casino employs 245 workers at Reid Airport.

This year, the slot operations passed a milestone, generating $1 billion in revenue over the life of the contract. Reid Airport sees an average of $34.4 million in annual revenue from the machines, which is directed toward operating costs.

Reid International Assistant Director Scott Kichline said in a statement the airport slots set the tone as an “only Vegas experience” for arriving passengers.

“On their way out, many also enjoy the opportunity to pursue one last jackpot,” he said.

Patricia Ross, general manager of the slot machine concession for Gaughan, said the games provide a respite for visitors while they await their flights.

Reid International Airport and Reno-Tahoe International Airport are the only two airports in the U.S. with slot machines. Next year, Chicago’s two airports, O’Hare International and Midway International, are expected to add slot machines as part of a gaming expansion plan for the city.