After losing nearly $35 billion in 2020, U.S. carriers are confident of a demand rebound. They are just unsure about the timing.

As U.S. airlines wait for the country’s Centers for Disease Control and Prevention to make a firm decision on requiring domestic travelers to test negative for COVID-19 prior to travel, Hawaiian Airlines’ unique experience has resulted in the operator building up an exclusive testing network.

The LCC will bring the aircraft back to service gradually.