What killed Sokka?

As frustrating as it is, the general consensus is that Sokka died of old age and natural causes between age 70 and 85. We first even learn about Sokka’s fate in the series sequel, The Legend of Korra (which you can watch on Amazon Prime, YouTube, and Google Play), when Katara says that he’s passed away.

Was Sokka murdered?

So, Sokka died sometime between 158 and 170 AG, and the cause of death is believed to be natural, as he would’ve been between 74-86 years old. The lack of concrete information on Sokka’s death is the direct result of his limited role in The Legend of Korra.