" ... I ran down to the gate to check. It still shows on-time ... I can see the airplane is at the gate. Wondering who is right? "

You are at the gate, see the plane, and still don't believe your eyes - shows late on the website, so it must be right!

... Reminds me of when you batteries on your tv remote fade ... you get closer and closer to the tv, pushing buttons again and again, because that's how you are supposed to change channels - just can't make that stretch for 2" to touch the tv button manually