James Anderson, 20, who is on the flight from Charles de Gaulle airport to London Heathrow said that the plane had been searched due to an apparent threat made by an individual.
Passengers were set to fly on #British Airways flight BA303 from #Paris Charles de Gaulle airport to London Heathrow airport on Sunday morning.
He said: "Everybody's been individually searched by armed officers and given all clear".
Mr Anderson told Express.co.uk: "Initially the pilot told us there were technical issues".
Upon leaving the aircraft, Anderson tweeted that all passengers underwent multiple X-ray scanning checks while security personnel searched baggage and sniffer dogs walked through the plane.
British Airways wrote on its website: "We're very sorry, this flight has been delayed significantly".
'The pilot then said there had been a direct security threat involving our flight specifically.
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"They were then told the plane was to move to another part of the airport".
One passenger on the plane said it was surrounded by dozens of armed officers and firefighters.
Anderson told CNN they had no new updates from officials and passengers are re-boarding the aircraft.
The incident comes days after a bomb was detonated on a District Line Tube train at Parsons Green station in West London.
As reported by the Independent, a spokesperson for British Airways said in a statement that their top priority is always the safety and security of both their customers and the airline crew.
"Additional security checks are being carried out as a precaution".
An 18-year-old man was arrested in Dover on Saturday in connection with the attack.