There was a slight drop of 0.9% in passengers at BAA’s six UK airports in November compared with the same month last year.
The company said 7.8m passengers used its airports at Heathrow, Stansted, Southampton, Edinburgh, Glasgow and Aberdeen during the month.
The figures included a slight drop at Heathrow with 5.2m passengers passing through the airport, 0.5% down on the same month in 2010.
BAA said it had expected a drop in figures because of bad weather and the UK Border Agency strike at the end of the month.
But BAA reported growth in some areas with the number of passengers travelling to and from the North Atlantic region rising by 3.6%
But BAA said the b number of domestic travelers using its airport continued to decline.
There was a fall of 12.3% compared with November 2010, mainly due to a cut in the number of flights.
BAA noted: “This sustained domestic decline reflects the UK regions being progressively cut off from the UK’s only hub airport by a lack of capacity at Heathrow.”
But BAA said passenger numbers at its three Scottish hubs were boosted by a 10.8% rise in travellers flying to European hubs like Amsterdam, Paris and Frankfurt.
It said these airports had seen “particular growth, with passengers increasingly having to now connect through an overseas country to make their journey. This more than offset the decline in numbers to Heathrow.
Edinburgh reported a 3.2% increase in passengers overall, with gains of 5.4% in European scheduled traffic and 9.1% on North Atlantic services. Aberdeen’s recent strong performance continued with an increase in passenger numbers of 16.1%, BAA said.
A recent runway extension at Aberdeen had enabled the airport to open new routes and a new service to Frankfurt which had helped drive a growth of 21.6% in its European scheduled traffic.