I was looking for a short haul-flight to do this afternoon, and ended up choosing KLAX to KSEA.
When I was deciding which airline to fly under, I discovered this little nugget on FlightAware! Is it common to see a Boeing 747 fly such a short route? Genuinely intriguing!
If they need to move an aircraft to a different destination, they’ll often do a quick hop, and do their actual flight from there. No passengers are usually found on these flight though :)
You’ll often see cargo operators fly heavy aircraft on short hauls and then eventually back to base. Just as how Tbolt explained. They pick up cargo as they land at each airport before eventually flying back to their origin.
CX2090 and CX2091 is a route that Cathay Pacific operates 748F’s on a few times a week interchanging from HKG-ANC-DFW-ATL-ANC-HKG and HKG-ANC-DFW-LAX-ANC-HKG.