Flying with Delta

Amy • Mommy to my 4 year old baby girl 👩🏽‍🦱, and pregnant with baby #2 🌈 due Feb 2024

Has anyone flown Delta with baby? I’ll be flying with my 5 months old in a couple weeks and I’m trying to prepare myself. I called the airline to see if they require her to have her birth certificate and the woman literally said “ oh, I don’t know but it would be a good idea to bring it.” Lol okay, I can’t find anything online either. I’d rather not bring it, maybe a copy would be allowed? Thanks in advance!