Hello. Last night (9/23) I landed at LAX and as I was taxing to my gate I saw a United A320 parked at the Tom Bradley International Terminal. I was surprised to discover this aircraft there because United has an international customs facility in Terminal 6 where most of its international flights come in to. I looked up on their website and it shows flight 978 from MEX-LAX with an arrival gate at TBIT. I searched other international arrivals for United (Guatemala, San Salvador, Sydney, Tokyo, London) and they all arrived at terminal 6.
I checked again today and the flight is scheduled to go in to that same gate again today and tomorrow. Why does this flight land there? Is it too expensive to keep the terminal 6 customs facility open for this one, afternoon, international arrival? Any thoughts/ideas/answers?