The government shutdown entered its 38th day Friday, grounding nearly 1,000 flights and delaying about 3,000 more across the United States, according to federal aviation officials.

Flights are delayed at Orlando International Airport due to an issue with staffing air traffic controllers, and a federal advisory says at some point Thursday night, there will be no certified air traffic controllers at all.

"The reduction in flights is likely to impact passengers, and we ask travelers to check directly with their airlines regarding delays and cancellations," MCO said. "Orlando International Airport will be fully staffed to assist passengers as much as possible during this time."

The FAA will reduce air traffic by 10% across 40 major markets starting Friday due to staffing shortages during the government shutdown.

MCO (Orlando International Airport) shares live security wait times for TSA lines and parking. CHECK OUT WESH:Stay in the know with the latest Orlando, Florida, news, weather and sports. Get the top stories and all the scores from the team at WESH.

The Greater Orlando Aviation Authority is organizing a donation drive from Nov. 4 to Nov. 7 to support federal airport partners affected by the government shutdown.

Flights to Orlando International Airport (MCO) were delayed for hours on Thursday night due to FAA staffing issues, according to the FAA's National Airspace System website.

Here’s what travelers should know as the cancellations begin taking effect Nov. 7. The Department of Transportation and Federal Aviation Administration directed a 10% reduction in flights at 40 airports.