Currently, the outlook has changed. One of the most famous airlines United and Delta said they could stop bleeding cash this month. Delta Air Lines announced the company's bookings began to increase five or six weeks ago as people began making plans in the spring and summer. The outlook did not improve until March, as January and February were weaker than expected due to the high number of infected, new coronavirus mutations, leading to new restrictions, and Covid-19 testing requirements for passengers.

Performance of NYSE Arca airline index (Tradingview.com)