Passenger traffic at airports operated by BAA increased 2.5% during February this year to 7.3 million compared to 7.1 million during the corresponding month in 2011.
Heathrow Airport served 4.8 million passengers reporting a rise of 3.8% over the same month last year boosted by surge in demand for flights to Brazil.
Since February was a leap year an extra day was added which added to the traffic compared to last year.
After adjusting the effect of the leap year, the UK airport operator, majority owned by Spanish company Ferrovial said that the passenger figure dropped 0.9% while Heathrow airport reported 4.6 million passengers with a rise of 0.3%.
BAA chief executive, Colin Matthews, said: "BAA's airports have continued to demonstrate their resilience in the weak economic environment we currently face."
Passenger traffic at Glasgow rose 3.2%, Edinburgh traffic rose 0.1%, Southampton rose 4.5% and Aberdeen a maximum of 18.7% while Stansted reported 4.9% drop in traffic during the month.
During the month, the group airports reported a strong demand for all destinations except the UK and Ireland, BAA said.
Passenger traffic from North Atlantic region increased 7.4%, with other long haul destinations increasing 1.3%, while passenger numbers on European scheduled routes rose 2.8%.
Heathrow reported surge in passenger traffic from South American region which saw passenger numbers rise 51.5%, with traffic from Brazil showing an increase of 89.0% while North Atlantic passenger numbers increased 7.5% at the airport.
Domestic passenger traffic dropped 2.8% year-on-year, becoming the worst performer market.
Air traffic movement at BAA airports rose 2.1% to 69,446 while Heathrow airport reported 1.6% rise in passenger traffic during the month.
Image: Heathrow airport reported 3.8% rise in passenger traffic to 4.8 million during February this year led by surge in demand for flights to Brazil. Photo: Warren Rohner