Originally Posted by
ethernal
You have to track the inbound flight. If the inbound flight is not going to get to your gate until 9:30 AM and your flight is at 9:00 AM, you know it is going to be delayed. This does, of course, introduce the risk of a plane swap which I mentioned earlier.
That's what I was doing and how I knew there was no way we would be leaving on time despite the optimism of DL.