Half of the busiest 50 airlines at Heathrow are missing landing noise targets, the airport revealed today.
Heathrow's chief executive John Holland-Kaye said he has written to the carriers to warn them amid continued problems with noise pollution.
Landing noise test scores were revealed by the airport in a 'Fly Quiet' table after monitoring between July and September this year.
Airlines receive a red, amber or green rating for six noise-related categories, with green indicating the quietest performance and red the noisiest.
Among the categories measured is the continuous descent approach (CDA), which sees planes maintain a steady angle of approach when landing.
The method reduces noise compared to long periods of level flight because it requires less engine thrust and keeps aircraft higher for longer.
But Heathrow's study found 25 out of the 50 main airlines missed out on green CDA scores between July and September. That figure marks an increase by five from a study for the previous three months.
The airport said in a statement: "Improvements in quiet approaches is a vital part of Heathrow's new blueprint for noise reduction, which outlines 10 steps to reduce noise impacts from the airport by summer 2015."
Heathrow also said that while all airlines had adhered to night-time operation limits in April-June 2014, there had been three unscheduled arrivals by airlines before 6am in July-September 2014.
The "noisiest" carrier was Israel's El Al in 50th place. Polish airline LOT was in 49th place, Middle East Airlines 48th, Thai Airways 47th and Aeroflot short-haul 46th.
The top five in the latest table had also been in the same positions in the table for April-June 2014.
British Airways was revealed as the least noisy for short haul flights. Aer Lingus was second quietest, Virgin Atlantic's domestic service Little Red third, Virgin Atlantic's international services fourth and American Airlines fifth.
Heathrow's sustainability director Matt Gorman said: "We believe it is only by working proactively with our partners that Heathrow airport can be a better, quieter neighbour to local residents."