A passenger flying from Frontier Airlines was restrained after allegedly hitting the aircraft’s window during a February flight from Denver to Houston, according to Fox 26 and ABC News.

The shocking incident was filmed by another passenger on the flight, who captured the person aggressively "banging on the windows" during the flight.

As per the reports of Fox 26, Frontier flight 4856 was en route from Denver to Houston arrived at George Bush Intercontinental Airport at 11:10 pm. 

Police stated that 20 minutes into the flight, a disruptive passenger tried to engage with a woman seated in front of him, but she kept ignoring his attempts.

Frustrated with the interaction, or lack thereof, the individual then reportedly began punching the seat in front of him as well as the plane window.

Passenger Tanner Phillips went on ABC World News Tonight with David Muir, describing the terrifying incident, "He was screaming in multiple languages, punching at the window, lying back, and trying to kick it out."

The aircraft’s window took some damage after the beating as cracks were seen on the glass with the attacker’s blood stained on it.

"It took a couple of guys to get his arms secured," Phillips added.

After being restricted from movement, the individual remained calm during the 2-hour, 30-minute flight.

After landing, the Houston Police Department questioned him while performing a thorough welfare check.