My son is flying alone he's 15yrs. Not as a unacompany child. Can I walk him up to TSA? This is his first trip solo.

Mike is 100% right

Yes

Yes you can walk with your son up to the point of entering the TSA check point. Only ticked passengers are allowed from that point on.

You. An ask them if you can make sure he gets to the gate for your comfort I actually seen a couple wait with some teens till they boarded there plane and stay to watch it depart . So I would ask the tsa

My daughter flew to Miami yesterday and we stayed just near the tsa, clear glassway, until we couldn't see her anymore. You'll be fine. Their very understanding.