According to the BBC, the study, published in Nature Climate Change, suggests that by mid-century passengers will be bounced around more frequently and more strongly.
The zone in the North Atlantic affected by turbulence could also increase.
Reading's Dr Paul Williams said that it was certain that if flights get diverted more to fly around turbulence rather than through it then the amount of fuel that needs to be burnt will increase.
He said that fuel costs money, which airlines have to pay, and ultimately it could of course be passengers buying their tickets who see the prices go up.
Dr Williams was presenting his research in Vienna at the European Union Geosciences (EGU) General Assembly.
The scientists concentrated their investigation on the North Atlantic corridor, which some 600 flights cross each day to go between the Americas and Europe.
Currently, pilots rely a lot on reports from planes that have already made the journey across the Atlantic earlier in the day for information about probable flight conditions, the report added.