Over a thousand flights are delayed and 33 are canceled going into and out of Denver International Airport on Sunday as thunderstorms threaten the area.

As of 6:30 p.m., 1,001 flights were delayed, according to airline tracker Flight Aware .

Impacted airlines include Southwest Airlines, which has experienced 339 delays. United was at 299 delays while SkyWest saw 180 delays, according to Flight Aware.

The National Weather Service has issued a severe thunderstorm watch in Denver until 8 p.m.

See Full Page