The 16-episode first season of the television series (released as two half-seasons) is based on the first novel in the series, Outlander (known as Cross Stitch in the United Kingdom). The second season of 13 episodes, based on Dragonfly in Amber, aired from April to July 2016.

The 13-episode third season, based on Voyager, aired from September to December 2017. The 13-episode fourth season, based on Drums of Autumn, aired from November 2018 to January 2019. The fifth season of 12 episodes, based on The Fiery Cross, aired from February to May 2020.

The series has been renewed for an 8-episode sixth season and a 16-episode seventh season to be based on A Breath of Snow and Ashes and An Echo in the Bone, respectively. The sixth season is scheduled to premiere on March 6, 2022