Half of that funding was intended to pay employees through September, provided airlines refrained from cutting pay or laying off staff.
United on Wednesday reversed a plan that would have made thousands of full-time workers into part-timers.
A union representing thousands of United employees sued the airline over the plan on Tuesday.
The company said the lawsuit was “meritless.”Executives from United and other airlines did not take part in the hearing.
The airlines were represented by the chief executive of the trade group Airlines for America, Nicholas E. Calio.