People can watch "Dallas" online at Amazon Instant Video. Both the original1978 through 1991 TV series and the 2012 TV series entitled "Dallas" are available through this service.
Amazon Instant Video videos, such as "Dallas," are available to Amazon Prime members. Prime membership requires a subscription fee, and some videos, such as the 2012 "Dallas" episodes, charge an extra fee to watch ($1.99 for standard definition and $2.99 for high definition.) The original "Dallas" episodes are free for Amazon Prime members to watch, but they do include ads. As of 2015, neither "Dallas" series is available on Netflix or Hulu.