Holidaymakers faced a lengthy delay after a technical issue forced their aircraft to return to Manchester Airport less than an hour after departure.
The Tul flight 2536 to Funchal on the Portuguese island of Madeira took off just before 3pm and climbed out normally.
But as it approached Chester the aircraft began circling over the Dee Estuary and spend more than 45 minutes flying between Chester and Prestatyn at about 6,000 feet before it turned and made its way back to Manchester.
It landed safely at 4pm and taxied to a stand near Terminal 2.
Airport sources said a technical issue forced the aircraft to return.
Later a passenger wrote on social media that the crew had explained a bee had got stuck in the air speed indicator. This is located close to the nose of the aircraft.
The part was exchanged by technicians while the passengers remained on board.
They were served with glasses of water while they waited.
Earlier the plane had made an uneventful flight to Venice and return.
The six-year-old plane was delivered new to TUI, previously known as Thomson Airways, in November 2012.
It can carry 198 passengers and carries a crew of six. It is not known how many people were aboard the plane on this flight.
The aircraft resumed its flight to Funchal later.
The plane took off from Manchester at 6.20pm and flew along the North Wales coast towards Anglesey where it turned left and flew south west.