American Airlines cancelled more than 400 flights in and out of Dallas-Fort Worth Airport on Tuesday after several tornadoes ripped through the surrounding area.
The carrier said it was cancelling 230 outbound flights and a similar number of inbound flights at the airport, the company's largest hub.
American said it also needed to inspect more than 100 planes that were on the ground during the storm for possible damage.
"We are going to have to do hail inspections on lots and lots of aircraft before we do any flying with them," said Tim Smith, the company's spokesman.
"Before we do that, we're pretty well not doing any flying this evening."
Dallas-Fort Worth is the eighth busiest airport in the world in terms of passengers.