"This flight from London Stansted Airport to Lisbon returned to Stansted shortly after take-off after a number of passengers became disruptive inflight," a Ryanair spokesman said.
According to media reports, as soon as the flight had landed, armed police came on board to remove passengers from the plane.
"We established there had been an argument between two passengers. After speaking to both individuals, one was removed from the flight and reported for a public order offence," a spokesman for Essex police said as quoted by the Daily Star.