Ontario CA happens to be a major shipping hub with tons of warehouses. So it often shows up in UPS or FedEx tracking if you order a lot of stuff online.
I think you missed the joke. Ontario CA can be both a city inland from Los Angeles or the province Ontario in Canada.
No I got the joke. My in-laws happen to live near Ontario and I kept having to think of the province in Canada to remember the name at first.
But I also knew about it because of tracking info.
It has an airport roughly as large as LAX that services mostly cargo planes.
Should be possible to get a flight from Ontario, CA to Ontario, CA.