More than half of the US airline fleet is now sitting idle, according to new numbers from the industry.
At least 3,162 planes were grounded on Sunday, representing 51% of the fleet, according to Airlines for America, which represents major air carriers.
The measure includes planes that have not flown in the last seven days.
The figure has hovered just shy of the 50% mark for several weeks. On Sunday, the group provided figures that showed 3,046 planes — or about 49% — were grounded as of Thursday.
The aircraft are not needed because airlines have removed from their schedules 73% of domestic departures and 94% of international departures, according to Airlines for America.
Taking planes out of service and cancelling flights can increase the number of passengers on a given flight. There has been a slight uptick in the number of people flying as well.