Glasgow Airport , also unofficially Glasgow International Airport, , formerly 'Abbotsinch Airport', then 'Renfrew Airport', is an international airport in Scotland, located west of Glasgow city centre. In 2014 the airport handled over 7.7 million passengers, a 4.8% annual increase, making it the second busiest in Scotland, after Edinburgh Airport, and the eighth busiest airport in the United Kingdom. It is the primary airport serving the west of Scotland and is the principal transatlantic and direct long-haul entry airport into Scotland.