Booking another flight
If your flight is cancelled but you need to get to your destination, then re-booking your flight is likely the only option.
If you have access to the internet, you can go online and check to see if your airline can transfer you onto another flight, or check your e-mail if you booked online as the airline may have already done so. Calling through to the airlines' 1-800 number may be a better choice than facing the endless airport kiosk lines. In many cases, the agents on the phone have more information than those in the airport.
Cancel or postpone
Wait out the storm in comfort
Keep your luggage in check