Is the "FirstOntario Centre" "in Toronto"? [closed]

No, Hamilton is not considered part of "Toronto". It is not even part of the Greater Toronto Area, which I would use as the limit of areas that are not Toronto but that people might refer to as Toronto nonetheless. If I lived in Hamilton and wanted to explain it to someone in Japan, I might say that I lived "near Toronto".

I live in Toronto and did not even know there was a FirstOntario Centre, let alone where it is.

Hamilton has its own airport with several commercial passenger carriers. The main Toronto airport is relatively close, but Niagara Falls Airport, Buffalo, and London, ON airports are close enough that you might consider them. (Which you probably wouldn't from Toronto.)

I live in Hamilton. I usually tell people "I live in Hamilton, that's near Toronto".

Assuming you're coming from outside of North America (Australia?), I would recommend flying into Pearson Airport in Toronto (YYZ). It's a global airport with lots of flights. Public transportation to downtown Hamilton is cheap and fairly easy (coach, travel time about 1 hour, about $13 CAD one-way, runs hourly for most of the day [e.g. maybe not between 3 and 6 AM]).

Other options:

• Buffalo Airport (BUF) may indeed be cheaper (although not necessarily from outside North America), but travel time is about 1.5 hour [plus a US/Canada land border crossing, which could add significant time if you're unlucky], and last time I checked there weren't good public transport/shuttle options.
• The Hamilton airport (YHM) is unlikely to be a good option from outside Canada; they handle mostly domestic flights, and taxi to downtown might cost more than the bus from Toronto.
• Billy Bishop airport (YTZ) is a small airport in Toronto that serves North American routes only.
• I've never heard of anyone flying into the London (Ontario) airport to get to Hamilton (I've flown out of or into all of YYZ/YHM/YTZ/BUF in the last 8 years). I'd be surprised if they had any flights from outside North America.

If you were coming for a longer visit and wanted to sightsee etc. in Toronto, it wouldn't be insane to stay in Toronto and travel back and forth to Hamilton (about 1 hour by bus or train, although as others have commented it would probably be more expensive). You could take taxis back and forth from Hamilton to Toronto but it would be very expensive (certainly more than $50 CAD).