The main Avatar movies are all around 2¾–3¼ hours long, with extended cuts running even longer.

Core runtimes

  • Avatar (2009) theatrical cut: about 2 hours 42 minutes (162 minutes).
  • Avatar: The Way of Water (2022): about 3 hours 12–15 minutes (often listed as 192–195 minutes, commonly rounded to 185–192 in press).
  • Avatar: Fire and Ash (2025): about 3 hours 17 minutes (197 minutes), currently the longest in the series.

Extended and special editions

  • Avatar (2009) special edition (theatrical re‑release): about 2 hours 50 minutes (170 minutes).
  • Avatar (2009) collector’s extended cut (home release): about 2 hours 58 minutes (178 minutes).

Information gathered from public forums or data available on the internet and portrayed here.

TL;DR: Expect roughly 2¾ hours for the first Avatar and just over 3 hours for the sequels, with extended cuts of the original pushing close to 3 hours.