Flying with an infant??

Kyla

I'm about to fly down south to visit family for a month and it's about a 5 hour flight with an hour layover. I have flown a bunch of times by myself but I'm completely new to flying with a baby. She will be about a month and a half when she flys. If you guys could give me any advice/ tips to flys with an infant it would be greatly appreciated 🙌 thank you in advance