Thomson Airways said a Dreamliner flying to Florida returned to Manchester after a "technical issue".
A spokeswoman said: "Thomson Airways can confirm that flight TOM126 travelling from Manchester to Sanford, Florida experienced a technical issue and the aircraft returned to Manchester Airport, as a precautionary measure.
"Passengers have disembarked and our dedicated team of engineers are now inspecting the aircraft.
"The safety of our customers and crew is of paramount importance and we would like to apologise for the delay caused."
More top news
Govia Thameslink Railway (GTR) has been fined £1 million after a passenger was killed when he put his head out of a carriage window.
The attack by Salih Khater was caught on dramatic CCTV footage which was played in court.
Edward Cairney and Avril Jones were found guilty of her murder by a majority verdict last month following a seven-week trial.