The men, who were in their thirties, were led away from the Norwegian airline plane by the police.
The Boeing 737-800 which came from nearby Oslo continued its flight to Larnaca in Cyprus after nearly 30 minutes, chief detective Kjell Moberg told AFP.
“One of them was particularly agressive and under the influence of alcohol, possibly also a medical drug acccording to what he said,” Moberg added. He did not give details about the fight.
A Swedish woman, who was to get married to one of the rowdy passengers, also left the plane, police said.
“The three men will have to sober up at the police station before they will be released,” said the police.
A spokesman for low-cost Norwegian airline confirmed the unscheduled landing in Copenhagen.