There was a 0.3 percent decline in air traffic movements in the UK in September compared to the same month last year.
This is according to figures from National Air Traffic Services (NATS), with the percentage the smallest year-on-year decline since the onset of the international aviation downturn in July 2008.
Despite the decline, there was a four percent growth in transatlantic arrivals and departures, while transatlantic overflights increased by 6.3 percent.
Traffic at NATS airports fell by 1.3 percent between September and the same month in 2009, although growth was recorded at Heathrow, Southampton, Bristol and Aberdeen.
Aside from the uncertain state of the global economy, European air traffic was affected by industrial action in France, Belgium and Spain.
NATS said last month that it had saved 50,000 tonnes of CO2 emissions last year, with the industry as a whole aiming to reduce CO2 emissions by ten percent by 2020.