Last time we flew, we had two 4 yr olds and did not use carseats on the airplane. This time we will have a 5, 2 and 1 yr old. This is only our 2 nd time flying. What are the rules and recommendations for carseats? How do we get kids, bags and carseats through the airport?
I would definitely have carseats for the 2 and 1 y/o. As long as your carseats are FAA approved, you can use them on the plane. We have a Britax Marathon, and we use the
Britax Travel Cart to wheel the car seat through the airport. There are other off-brand versions of the same thing that may be cheaper.
I only have one DD (almost 2), but when we fly I usually wear her in a carrier (a Beco Gemini, like an Ergo) on my back. This way my hands are free to do whatever I need, DD is safe and sound and close, and we don't have to bring the stroller through the airport. (We generally rent a City Mini from an offsite company when we go to Disney).
As for dealing with luggage - we use curbside check-in. With DD being worn, I can help roll the luggage over to curbside and wait with it there while DH gets the rest of the bags over. The skycaps take our checked luggage from there - so it's dealt with pretty quickly.
As for carry-on luggage, we try to limit ourselves as much as possible. On previous trips, I was EPing, so to fit what we needed, we brought 1 rolling suitcase, 1 laptop bag (that fit over the handle of the rolling suitcase, so they could be rolled together by 1 person), and the diaper bag (which was a backpack that DH wore). The diaper bag has also been put into the car seat on the travel cart on past trips. On our last trip, DH rolled the car seat and the diaper bag (it's a bit more unwieldy) while I rolled the rolling suitcase/laptop bag combo and wore DD in a back carry.
Also, with boarding the plane, we always made sure DH boarded before DD and I (with as much of the carry-on luggage as he was allowed to take). This allowed him to get the luggage stowed and the car seat installed before DD and I were on the plane. Then when DD and I got on the plane, she could go in the car seat immediately and I could get situated without impeding the flow of other boarding passengers.
Another tip for flying - try to plan flights around naptime, and have something for your youngest 2 to drink/suck on while taking off. We've done this each time, and DD has always slept on the plane (almost the whole flight!). The sucking/drinking also helps keep her ears from popping/feeling painful.