Denver International Airport is running as normal Thursday after severe thunderstorms and a tornado warning grounded flights Wednesday afternoon.
Flight delays were an hour or more for many travelers.
Some flights were diverted to Colorado Springs and other airports during the grounding.
At least one tornado touched down in the town of Watkins, southeast of the airport. The storms also dropped pea- and marble-sized hail that piled up like snow around the airport. Cars slid on the hail on Interstate 70 in Aurora, and snow plows cleared the hail from the main airport access road.
More thunderstorms in the DIA area are expected Thursday through Saturday.