21 TV Shows Ending In 2021
15. Supergirl
The third show to be set within the Arrowverse, Supergirl has had a phenomenal run on The CW, running for five seasons and over 100 episodes. In September of 2020, it was announced the show would be coming to an end with its sixth and final season, to be taken over by anticipated spin-off Superman & Lois.
Superman & Lois will kick things off in February of this year, whilst Supergirl's final season is set to air in late-2021, following the titular heroine as she tackles a post-Crisis on Infinite Earths world. The season will consist of twenty episodes.