Chief executive John Holland-Kaye made the comments as the airport posted record third quarter passenger numbers on Friday (October 26).
In total, 60.5 million passengers have transited through Heathrow in the nine months to September 30, up 2.5% from 59.1 million this time last year.
The airport has also reported retail revenue per passenger up 3.1% from £8.33 to £8.59.
However, while revenue is up 2.3% from £2.161 billion to £2.211 billion and adjusted Ebitda up 1.9% from £1.347 billion to £1.372 billion, pre-tax profits fell 7.4% from £229 million to £212 million.
