i travel with the stroller that can be folded and can be put in overhead luggage compartment.
sometimes they ask me to do that, but most times they will check it for me.

also, travelling with a stroller/baby/small toddler usually have priority to board first, a different queue at ticketing, at boarding, at other queues etc. almost first class/VIP treatment. haha

based on experience when i travelled overseas. dont know if domestic is the same, shud be the same i guess.

i would avoid travelling with babies at all. but toddler so far no issue for me.
the youngest age of kid i ever brought on the plane was 1 and a half years old. he was so excited to be on the plane, then slept most of the time. hahaha.
i kinda OK to do it because it was a short flight.


long flights and transits....around 4 year old. no issue at all. really appreciate the VIP/First class treatment (on queues etc )
kids also gets special airplane kits/goody bags to help them get occupied.

i think to each their own. if well behaved and well adapted kids i think no prob.