Frontier and United canceled a total of 71 flights to and from Denver on Sunday after hail damaged some of their airplanes last week.

It wasn’t immediately clear if the cancellations listed on Denver International Airport’s website were all scrubbed because of hail damage. Neither airline’s officials immediately return phone calls.

Frontier has said 18 of its 59 jets and two of its turboprops were damaged by Wednesday’s storm.

United has said it took 12 planes out of service for inspection. A United spokesman said earlier he didn’t know the extent of the damage. United has 710 planes total.

Frontier said earlier it cancelled a total of 96 flights from Saturday through Monday. It’s not clear whether the 37 cancellations posted Sunday were more or less than expected.