SkyWest Airlines Inc. plans to eliminate 1 of its roundtrip flights between Gillette and Denver, starting May 2. The airport in Rock Springs also will lose an early morning departure to Denver and late evening arrival from Denver. SkyWest operates flights to Denver for United Airlines. SkyWest needs to cut the number of flights so it can meet the overall sleep network requirements and to clear time to paint of some of its aircraft. SkyWest is seeking an increase in subsidies from local governments to continue serving Rock Springs and Gillette.