United Airlines says it will notify 36,000 frontline employees that they could be laid off on October 1 as US carriers fight for survival amid the coronavirus crisis.

The big US airline said it does not expect everyone who receives the notice to be furloughed, but emphasised that it must cut costs due to a severe drop in demand.

United does not expect travel to normalise “until there is a widely available treatment or vaccine”, according to a memo released by the company.