A 2.2 per cent decrease in passenger figures for Ronaldway Airport last month is being blamed on the reduction of capacity on services to London and the Northwest of England, following the collapse of Euromanx in May.
But the fall of 1,500 passengers is described as a better result than the figure of almost 2,000 predicted by the airport.
The numbers of passengers flying to and from Liverpool, Manchester and Blackpool were all down two per cent compared with September 2007.
On the London routes there was a fall of one point three per cent.
Some of the routes which performed well in September were the Manx2.com links with Gloucester, Belfast and Blackpool.
Transport Minister David Anderson (pictured) is predicting a tough winter for airlines but says overall the route network remains strong.