The listings on TVGuide's website provide the airing schedules for the 2012 "Dallas" TV show, as well as the original 1978 "Dallas" show. As of October 2015, neither series is producing new episodes or airing regularly in reruns on any channel.
After three seasons, the TNT network cancelled the 2012 "Dallas" show, airing its final episode on September 22, 2014. After that, the show stopped appearing on the channel's weekly line-up. The finale of the 1978 "Dallas" show aired in 1991. Though no stations currently show reruns for either series, TVGuide.com gives links for watching episodes online on other sites.