Flight Tracking in iOS 9 Stopped Working

I was surprised to be able to automatically track flights in iOS9 a few weeks ago. The text of a calendar event was highlighted, similar to an address in a calendar event, and when tapped, it went to a flight status page (on time, delayed, ETA, etc).

I tried to enter a flight now in an event and the functionality is gone. Example "Delta #1111"

Any news on this?