Southwest Airlines Co. today announced a new daily nonstop route between Des Moines and Las Vegas. The service is scheduled to begin on Sept. 29, when flights are scheduled to leave Des Moines at 11:55 a.m. and arrive in Las Vegas at 1:05 p.m., and scheduled to leave Las Vegas at 12:25 p.m. and arrive in Des Moines at 5:20 p.m. Don Smithey, executive director of Des Moines International Airport, said the connection is positive for Des Moines because Las Vegas connects passengers to 17 other cities, including Seattle, Portland and Los Angeles. It's also an encouraging sign for the Des Moines market, he said, as the airport continues to work with Southwest to add future destinations.