An airport spokesman said: “Following reports of two drones flying over the Gatwick Airport airfield, we have had to suspend flights while this is investigated.
“We apologise to any affected passengers for this inconvenience but the safety of our passengers and staff is our foremost priority.”
People were tweeting their frustration at being stuck on the tarmac.
One user wrote: “Dear @British_Airways thanks for diverting our plan to stansted and now Heathrow (even though we were meant to land at Gatwick) and now you’re not even letting us off the plane.”
The airline responded: “Sorry about that, Elly. Gatwick have stopped all arrivals and departures due to a drone, we’ve been told. Something that’s not within our control. We hope the crew keeps you updated.”