Chelmsford Crown Court jurors heard neither was a "terrorist nor a political or religious extremist".
Prosecutor Brian O'Neill QC said that although neither man was capable of carrying out the threats, the claim had been made deliberately and the pilot had no option but to take it seriously.
He said the day Pakistan airlines flights PK709 took off from Lahore heading for Manchester. It never arrived at its intended destination.
As a result of the behaviour of these two defendants, especially Mr Safdar, the flight had to be diverted to Stansted and was escorted by two RAF Typhoon fighter jets.
This behaviour involved threats to kill members of the cabin crew, threats to kill passengers and threats to blow up the plane whilst it was in flight.
Such utterances, if made at ground level, may sometimes be capable of being ignored or not being taken seriously but when those threats are made in flight at 30,000 feet on a commercial jet, that's not an option."
More top news
Norwich City have been knocked out of the League Cup after losing on penalties at Leeds United.
MPs are to debate whether police animals should be given greater rights if they're hurt in the line of duty, following an attack on a dog.
There are fresh calls for expansion at airports in the East of England, after the Government revealed plans for a third runway at Heathrow.