The deal was completed in July and since then the parking site has been redeveloped and relaunched in August, a move which has led to “thousands” of bookings being made.
It is hoped the site will now prove as successful for sunshine.co.uk as the acquisition of airporttransfers.co.uk six years ago which is now performing well.
The OTA also operates a number of other specialised travel domains.
Chris Clarkson, managing director of sunshine.co.uk, said: "We’ve had our eye on airportparking.co.uk for a number of years.
“We’ve already expanded our offering on sunshine.co.uk to incorporate car hire, insurance, lounge bookings and such like and we own a number of other sites such as airporttransfers.co.uk which performs incredibly well.
"Sunshine.co.uk has had a hugely successful year to date and so we want to expand the business further by looking for further acquisitions that we could make.
“Following the re-development of the site, airportparking.co.uk is off to a flying start and is showing no signs of slowing down."