I was arriving at lax last week, and we waited 20 minutes or so for our gate (71a) to open. I was curious as to which flight was holding us up. But I couldn't find a way to look up flights by gate number.

I imagine this is NOT doable. But perhaps someone else knows a trick I don't know.

I manually plugged in a bunch of different destinations into the app until I finally learned that LAX-DEN was the culprit, showing a 1 hour delay from gate 71a.