This is on the USAirways site so I would imagine other airlines will be doing the same thing. Orlando isn't mentioned yet so keep watching your airline website.
Before heading to the airport I would call the airlines 800 number and make arrangements for new flights before you go to the airport.
You should always have the phone number of your airline programmed into your cell phone when traveling.
Operations Alert
Due to emergency conditions affecting the airport listed below, US Airways will allow passengers traveling to or from the these locations to change their flights. Please check flight information for latest details.
Airports Affected
October 11 - 23, 2005 - Re-accomodation Procedures for Guatemala
Guatemala
October 18 - 21, 2005 - Re-accomodation Procedures for Hurricane Wilma
Belize City, Belize
Cancun, Mexico
Cozumel, Mexico
October 18 - 23, 2005 - Re-accomodation Procedures for Hurricane Wilma
Fort Lauderdale, Florida
Fort Myers, Florida
Key West, Florida
Miami, Florida
West Palm Beach, Florida