Flying over Canada VFR

I have a question regarding flying over Canada VFR without landing in
Canada. For instance, if I takeoff from Saginaw, MI and fly VFR to
upstate NY, I would fly in Canadian airspace. If I don't land in
Canada, and since my flight originated in the US, what requirements, if
any, are there for doing this? Is a VFR flight plan required, do you
need a FCC radio license for your aircraft since you would be
transmitting in Canadian airspace, and are there any ATC fees to pay for
using Canadian airspace?

The last question is, what would be the difference if I did this same
flight IFR?

Thanks,

BJ