Snowpiercer season 1 spoilers follow. Snowpiercer's TV adaptation returns for its second season in the US next week, and thankfully we won't have to watch it thinking it could be the final run of episodes as it's been confirmed that a third season has already been greenlit. As reported by The Wrap, the show's US network TNT has already given it a third season order following the strong performance of the first season in 2020. Outside the US, the show airs on Netflix in multiple territories, including the UK. Snowpiercer's season 1 finale deviated from the cult classic film with the introduction of a