Heathrow Airport in London, forecast that passenger numbers would plunge by over 90% in April, as coronavirus restrictions stop most people from travelling.
The remaining 10%, or around 680,000 people, still using Heathrow this month will be either people returning home after being stuck abroad or foreign citizens repatriating, as well as medical experts traveling to help with the crisis.
Heathrow also said its passenger numbers were down 52% in March compared with the same month last year, as the 6.5 million who went on holiday or traveled for work last March shrunk to 3.1 million this year.
The airport, which is owned by a group of investors including Spain's Ferrovial FER.MC, the Qatar Investment Authority and China Investment Corp, said it was now only using one of its two runways.
Heathrow has for more than a decade been trying to build a third runway because it was operating at full capacity before the crisis.