International & Domestic Travel Question

Okay, so we all know Canadians (and Americans, I believe) need passports FOR INTERNTATIONAL FLIGHTS into and out of the USA.

However, if, as a Canuck, I cross any land border I only need my driver's licence and birth certificate. Once in the USA, can I fly from, say, New York to Las Vegas without a passport because it's a US domestic flight?

Anyone know?

 

This answer is essentially worthless because I don't know for sure, but I'd be very surprised if you needed to have a passport for that.

 

You don't need a passport for a domestic flight once you're in the country.

 

Correct -- you don't need a passport for intra-U.S. travel, but you will need a form of government issued photo ID to get through security. That could be a passport, a driver's license or something like that.