Allegiant Stadium was built between November 13, 2017, and July 31, 2020, with its official construction period running just over two and a half years.

Quick Scoop: Allegiant Stadium Timeline

  • Construction started : November 13, 2017.
  • Construction substantially completed : July 31, 2020 (this is the key “built” date most sources use).
  • Stadium inauguration / first Raiders home game : September 21, 2020, Raiders vs. New Orleans Saints.

So if you’re asking “when was Allegiant Stadium built,” the commonly accepted answer is that it was built from late 2017 to July 31, 2020, with doors opening for NFL action in September 2020.

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