Published: Feb 02, 2011 6:48 PM EST
Updated: Feb 02, 2011 3:13 PM EST

LEE COUNTY, Fla.-- By midday Wednesday, more than 5,300 hundred flights had been grounded across the country, according to tracking service Flight Aware.

At Southwest Florida International Airport, there were nearly 50 delays before noon.

More than 6,700 flights across the US were cancelled Tuesday, stranding thousands of passengers.

Operations at both Midway and O'Hare airports in Chicago were shut down Wednesday, but aviation officials say they can be back up and running in a limited capacity as early as this afternoon.

JFK, LaGuardia and Newark are already operating on limited schedules. As of Wednesday morning, more than 15-hundred flights had already been grounded.

Be sure to call your airline ahead of time before heading to the airport.