American Airlines said it canceled hundreds of flights this weekend due to staffing shortages, maintenance and other issues, challenges facing the carrier as travel demand surges toward pre-pandemic levels.

The airline said that equaled about three percent of its total flights, including those operated by regional carriers.

American said in a filing earlier this month that it expects its second-quarter capacity to be down 20 percent to 25 percent from 2019, while United Airlines said it expects its capacity to be down about 46 percent and Delta forecast a 32 percent decline versus 2019

Meanwhile, Southwest Airlines forecast its July capacity to be off just three percent from 2019, down from a seven percent decline this month