KLAS-TV initially broadcast a test pattern for two weeks, beginning on July 8, 1953. The station went on-air on the evening of July 22, 1953, becoming Nevada's first television station on VHF channel 8. The station was originally owned by Las Vegas Television Inc., run by Hank Greenspun, owner of the Las Vegas Sun. Channel 8 has always been a CBS affiliate, but maintained a secondary affiliation with ABC, which it would share with KLRJ/KORK-TV (VHF channel 3, now KSNV) from that station's sign on in January 1955, until KSHO-TV (VHF channel 13, now KTNV-TV) debuted in May 1956.
Greenspun sold the station to Hughes Tool Company on March 30, 1968. After Hughes' death in 1976, the station was held in an outside trust for another two years until 1978, when it was sold to Landmark Communications (Landmark Communications renamed itself to Landmark Media Enterprises in September 2008).
1Nexstar operates these stations owned by Mission Broadcasting. 2Nexstar operates this station owned by Cunningham Broadcasting. 3Nexstar operates this station owned by White Knight Broadcasting through an SSA. 4Nexstar operates this station owned by Vaughan Media. 5Predecessor company of LIN Media. 6Currently a repeater for WWLP. 7Joint venture with Discovery, Inc., in which Nexstar owns 31% while Discovery owns the remaining 69%.