UPDATE: 4:30PM SUNDAY. 430 flights cancelled at O’Hare, remaining flights now average 3 hours late.
Average delays at O’Hare are now up to two hours, four minutes and will only grow as the afternoon progresses.
If you have a flight scheduled to go through O’Hare or Midway the rest of the day, be proactive. Arrive at your departure airport at least 30 minutes earlier than you ordinary would. See if your airline can reroute you around Chicago. For example, if you are on United and are changing planes in Chicago see if they will reroute you through their Denver or Dulles hubs. Or, put you on a different airline altogether.