Originally Posted by makfan
I think this is either a computer glitch or some sort of irregular operations. if you look at the scheduled times, they don't make any sense.
Departure Arrival
From Scheduled Actual To Scheduled Actual
Seattle 8:55 AM 8:55 AM Tampa 5:40 PM Canceled
Tampa 6:10 PM Canceled Newark-Newark Intl. 5:07 PM 6:31 PM
The normal schedule is 08:55 to 17:07. According to this, the plane left SEA on time at 8:55 AM but didn't arrive at EWR until 6:31 PM, nearly 90 minutes late. On the other hand, I really don't think they could have diverted to TPA and returned to EWR in just 90 minutes, so I am puzzled.

There was probably an ATC delay of some sort enroute to EWR (90 minutes isn't that long). Someone probably mistyped the delay into the computer (and accidentally added a TPA stop) and later corrected their error (thus showing the TPA stop cancelled).