I posted on the baby gear board about a recommendation for a car seat travel bag, as I thought something with wheels would help with getting the car seat to the gate, but I was informed that checking the car seat, even at the gate, can severely compromise the integrity of the car seat. I'm pretty sure DS will be able to sit in the car seat on the plane, although I am taking him as a lap child and not a paid passenger so it isn't guaranteed.
Have you flown with the car seat? Did you gate check it? Did you have any kind of travel bag/wheels to transport it? I am taking the stroller system but DS much prefers the stroller to the car seat.
Second, did you take the base with you? If so, how did you travel with that?
Thanks in advance for the advice!