The ranking of the busiest continental airports in sees three airports exceeding the threshold of 60 mil lion passengers (Heathrow, Paris CDG and Frankfurt), followed by Amsterdam, which is poised to do so in 2016 and Madrid, which recorded the best absolute growth in volume for the year, increasing its lead (near ly 47 million passengers) from the set of airports that hover around 40 million (Monaco, Fiumicino, Gatwick and Barcelona).