The federal agency added that it's investigating the incident involving the Southwest Airlines flight that departed from Omaha, Nebraska at at 8:26 a.m. and didn't land in Chicago until 10:10 a.m., according to FlightAware.

The head of the National Transportation Safety Board (NTSB) has pinned blame on the near-collision at a Chicago airport earlier this week on the crew of the private jet that passed in front of a

National Transportation Safety Board chair Jennifer Homendy says investigations are ongoing into the near-miss between a Southwest airliner and a Flexjet in Chicago.