Luton Airport has the most expensive parking according to a new investigation.
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The Bedfordshire airport's parking costs three times more than the cheapest, Exeter Airport.
Research by Admiral Insurance found that parking at Luton costs passengers £191 for two weeks, compared to just £65 at Exeter.
The comparison of 30 UK airports found that London City was the second most expensive at £181, followed by Gatwick, which charges £175.
Meanwhile, the most extortionate drop-off short-stay charges were found at Luton, Doncaster and Stansted, where just 15 minutes in the car park costs £8.50.
Admiral spokesman Alistair Hargreaves said: "We all know that an overseas holiday in the summer time can be costly, but our investigation has revealed that holidaymakers can end up feeling short-changed before they've even boarded the plane.
"This study demonstrates that airport parking prices are a postcode lottery with extortionate price discrepancies for the same 2.4 metre-wide car parking space, depending on where you are flying from.