Today, 03:03 PM
As far as the airlines go, there are no restrictions to the age your baby can fly with you. Personally, I think traveling with a baby that is 3 months old is perfect- you don't have to pay for a seat, you can nurse them for take offs and landings to ease the ears popping, you can carry them around in a wrap or sling while at the wedding, and they are not old enough to get antsy if you hold them the whole flight. Also, having your mom there with you is so perfect! And of course Grandma loves to help in any way she can!
I agree with mommal- being forbidden to travel with your children is a big deal. You mentioned in your original post that she is your only real friend, so correct me if I'm mistaken, you want to go to her wedding, but you feel like you don't want to rock the boat at home with your husband? I'm probably the wrong person to ask, because I don't let my husband dictate my comings and goings unless it directly affects him, i.e., if it was a financial issue, but if I were you, I would take the baby and go to the wedding. It has been so special to me to attend all of my closest friends' weddings and to share those special moments with them. Hopefully, she only gets married once, and wouldn't you hate to miss it? Plus, how fun will it be to get to show off your beautiful new baby? Taking the baby will be far easier than leaving it with DH and pumping the whole time you are gone and leading up to leaving.