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."
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Events are taking place in Cambridge, Norwich, Colchester, Southend and Lowestoft today, to mark Holocaust Memorial Day.
Cloud will increase through the day with rain arriving by dawn.
A mostly dry night with some clear skies allowing a touch of frost to form in places. Increasing cloud from the west tomorrow.