Trials of new take-off routes out of Heathrow are being temporarily halted.
The routes, being tested as part of the Government's Future Airspace Strategy, have prompted thousands of complaints from people living on the Berkshire-Surrey border.
The latest phase, affecting Ascot and Lightwater, had been due to continue until 26 January 2015.
Flights are due to return to normal on Thursday. Further trials due to start last month have also been postponed.
A statement posted on the airport's website last month said it had asked NATS to halt the trials "in light of residents' feedback".
