The first bout of snow and we're already seeing delays and cancellations at PDX. For specific delay information you can check out the PDX Flight Information System at http://www.flypdx.com/flights.aspx.
PDX also has travel tips on its website at http://www.flypdx.com/Travel_InclementWthr.aspx.
The big cause of delays during snowy and icy weather: de-icing the planes. Each plane has to be meticulously sprayed with de-icing fluid, to clean its wings and control surfaces. So if it does snow, expect an extra 15 to 30 minutes per plane to get it done.
