Heathrow Airport in London will continue to cap daily passenger numbers until the end of October.
The London transport hub, which is one of the busiest in Europe, will limit traveller departures to 100,000 per day until October 29 as a way to deal with an increasing demand for air travel alongside staff shortages.
The cap was imposed in July, during peak summer travel season and was expected to be lifted on September 11. Instead, it will continue until the end of October.
Airlines were told to stop selling tickets during this time as airport ground staff would not be able to facilitate the projected amount of passenger traffic.
So far, the cap has been working. The airport said it had resulted in "fewer last-minute cancellations" and "shorter waits for bags."