ID requirements for children on flights

[Anonymous]

We'll be flying domestically in a couple of days with our kids aged 3 and 5. I don't think we've ever flown within the US before and I've checked the airline website which says that no ID at all is required for children under 18. I just wanted to confirm that this is definitely true, including when flying out of DCA - I'd rather not bring the kids' passports and green cards if I don't have to because I'd rather not have to keep track of those valuable documents where we are going (but obviously will bring if necessary or if there is a possibility that ID would be required).

[Anonymous]

No ID is required. You might bring copies of their passports and birth certificates just to ease your mind. Obviously photo ID is never required for kids flying domestically (not every kid has a passport), so the most you would ever need is a birth certificate anyway (to verify the age of a lap infant, for example).

[Anonymous]

My kids are 11 & 14, and we have never brought or shown i.d. for a domestic flight.

[Anonymous]

I took a friend's DD on a domestic flight. She was 11 and didn't have a passport or any ID. No problem. We vaguely look alike so people may have assumed she was related to me.