Here is a bulletin from Alaska Airlines:
While Alaska Airlines has not canceled any flights in advance of tomorrow’s
expected snow storm, the carrier urges travelers booked on flights in to and
out of Seattle tomorrow to check alaskaair.com before leaving for the airport.
In the meantime, the airline has posted the following travel advisory on
alaskaair.com:
Seattle and Portland passengers booked on flights in to or out of Seattle and
Portland, between Jan. 17 – 19, may rebook prior to Jan. 22 without change fees
or apply for a full refund of the unused portion of their ticket. Tickets must
be exchanged and travel completed by Jan. 22, 2012. Passengers may change their
travel dates online at alaskaair.com or by calling Alaska Airlines at
1-800-ALASKAAIR (1-800-252-7522).