Deadline reports that the Supergirl TV series will end with its upcoming sixth season. Despite production delays and an early 2021 premiere, season six is expected to have 20 episodes.
Production on the sixth (and now, final) has been delayed due to the ongoing pandemic but is expected to begin next week in Vancouver. Benoist is currently expecting so the actress will be joining the cast and crew at a later point. The production will film around her until she returns.
Between the production delays and the show’s decline in the ratings (Supergirl ranked seventh of 16 scripted CW series for the 2019-20 season), the producers, the studio, the network, and Benoist decided to wrap up the series with a full season of episodes. It seems likely that the changes in Benoist’s personal life may also have impacted the decision.