Air Berlin carried almost 28 million passengers over the course of 2009, a 3.9 percent decrease from the previous year’s total.
Germany’s second-largest airline said that one of the main reasons for the decline was a reduction in passenger capacity of 2.6 percent.
Despite the challenges posed by the economic downturn, fleet capacity utilisation was marked at 77.3 percent, a fall of only one percentage point from 2008.
Over two million passengers travelled on an Air Berlin flight in December, a 0.8 percent increase on the previous month’s total.
Until December 24th, the airline allowed its passengers to check-in their Christmas tree to the aircraft’s cargo compartment free of charge.
Trees of up to two metres in height were permitted in light of a number of requests from German passengers.
Last month, Air Berlin introduced its ‘check-in at the station service’ at railway stations in Switzerland.