In December, passenger numbers plummeted 83 per cent when compared to 2019, as fears about the new strain of Covid-19 meant countries shut their borders to the UK.
As Heathrow prepares for a much-needed boost in the form of the Christmas getaway and the capital moves into tier three, passengers are being reminded of guidelines at the airport.
The long-delayed, much-debated scheme was previously blocked by the Appeal Court, which had argued an airport strategy from the government did not meet up-to-date UK climate targets.
Passenger numbers at Heathrow fell by 88 per cent in November, as travel restrictions and a second lockdown took their toll. Just 747,000 travellers passed through the airport.
The results of pre-departure testing trials carried out by four transatlantic carriers at Heathrow will be brought together by a study commissioned by the airport.
American Airlines, British Airways and oneworld have launched an optional Covid-19 medical-based testing trial on selected flights from the United States to London Heathrow.
Passenger figures at Heathrow were down 82 per cent in October when compared to last year, as the Covid-19 pandemic continue to take a toll on global aviation.
Paris Charles de Gaulle has overtaken Heathrow as the largest airport in Europe for the first time, with Amsterdam Schiphol and Frankfurt close behind.
The testing facilities, a UK first, are described by officials at the airport as a critical step in the recovery of the aviation sector, restoring traveller confidence and re-opening routes.
Heathrow saw passenger numbers fall by 82 per cent during September, as the Covid-19 pandemic continued to take a huge toll on the aviation sector.
The UK must introduce a testing on arrival regime if it wishes to maintain a leading position in global aviation, Heathrow chief executive John Holland-Kaye has argued.