A poll of 10 of the UK's main airports has shown that parking a car at an airport for 24 hours can be more expensive than parking a small plane.
The study highlights Heathrow Terminal 5 as the costliest place to leave a car, with drivers paying almost £52 to park 24 hours in the short-stay car park - while a Telegraph Travel information request discovered that the long-stay car park is cheaper at £17.90 if pre-booked.
Manchester Airport's short-stay car park costs £35 for 24 hours while a six-person light aircraft can be parked for £21 for the same number of hours.
Liverpool's John Lennon Airport costs motorists around four times the amount that a light aircraft owner would pay, at £39.99 per car and £10.72 for a small plane.
Luton was the only airport where cars are cheaper than planes, at £36 for a car compared to £38.88 for a plane.
Russell Craig of Manchester airport told the Independent, which conducted the study: "Years ago airports made all their money from the planes. Now at Manchester, aviation income makes up less than half of our revenues.
"To be able to keep investing, you've got to find new revenue streams and some of that is car parking. But pre-booking is the way to save money. The turn-up prices are what they are."
Copyright Press Association 2012