CHICAGO (CBS)– Chicago airports have canceled over 700 flights amid the snowy weather conditions.

As of 10:15 p.m. Saturday, 597 flights have been canceled at O’Hare International Airport, and 135 flights have been canceled at Midway International Airport.

Delays at O’Hare and Midway are averaging 15 minutes.

A winter weather advisory is in effect on Saturday for northern Chicago areas as a mix of snow and rain continues into the evening.

According to CBS 2 meteorologist Ed Curran, northern areas, including Cook, DuPage and Kane Counties, can expect the highest snow totals with up to 8 inches of snow. Southern Cook County may only see a coating with a possible 1 to 4 inches.