The rise comes as Heathrow Airport has been given the green light to charge airlines more to recover costs already spent planning its third runway. As these charges are usually passed on to passengers, flights could cost an extra 15p from 2028, with the increase expected to double in later years. Tom Vaughan, travel insurance expert at Confused.com, said: "Heathrow being allowed to charge airlines more means flight prices could creep up over the next few years. He suggested comparing different airports, checking ticket inclusions, and paying by credit card for better value and extra protection. Heathrow has already spent money planning its third runway.