Two men started a fight on a plane as other horrified passengers looked on and a desperate stewardess tried to pull them apart before allegedly being "choked" by one of the brawlers.
The video, filmed on a stationary Japanese ANA flight to Los Angeles, was posted online after the fight at Narita International Airport on Monday night.
It shows the men, one wearing a bright red and white Hawaiian shirt, throwing punches at each other from their seats, according to Daily Mail.
One shouted, "Someone help! This guy is crazy," as airline staff tried to break them up.
Other passengers can be heard begging the pair to "please stop" as a baby cried in the background.