CMPD is continuing to investigate the incident, and no arrests have been made yet.
“Luckily, these kinds of incidents are extremely rare,” American spokeswoman Michelle Mohr said.
She said the incident involved Flight 2005, which was headed to Fort Lauderdale, Fla.
The plane had just pushed away from the gate but was not yet in the air when two male attendants were assaulted, Mohr said.
Police were called at 6:16 p.m. Tuesday to Gate 19 of Concourse C about an “irate passenger assaulting the flight attendants on the plane,” a CMPD report stated. Police did not say what set off the passenger.
A 58-year-old flight attendant was hospitalized with possible internal injuries, police said. They said the other victim, 34, was taken to a local hospital with minor injuries.
Authorities are investigating the case as an aggravated assault and a simple assault.
The plane returned to the gate after the assault, Mohr said, and eventually took off for Florida after other attendants were brought on.