I'm a Canadian driving over the Buffalo border to the Buffalo airport flying to Tampa Florida - cont'd

I'm a Canadian driving over the Buffalo border to the Buffalo airport flying to Tampa Florida - cont'd
Seeing as it's an international domestic flight, do I require a passport?
Other - United States - 2 Answers
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1 :
It's not international, you are flying within the US
2 :
You won't need a passport to get across the border. I'd pack your birth certificate and a driver's license, just to make it easier and to avoid a potential problem.