United Airlines today announced its winter flight schedule to five Colorado ski destinations from Denver and seven other airports nationwide, and said it will add nonstop service between San Francisco and Eagle/Vail.

The carrier — Denver International Airport’s busiest — said it is increasing flight frequency to Aspen, Vail, Crested Butte and Steamboat Springs from previous years; United also will serve Telluride this winter.

From DIA, United said that this winter it will fly:

Up to 9 times…