how many total hijackers were there on 9-11-01

There were 19 total hijackers involved in the 9/11 attacks on 09‑11‑2001.

To break it down briefly:

• 4 commercial planes were hijacked.

• Those 19 hijackers were organized into:
  • Three teams of 5 hijackers.

* One team of 4 hijackers (on United Flight 93, which crashed in Pennsylvania).

These figures come from official investigations such as the 9/11 Commission and subsequent reporting.

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