Car seat on the plane

olivia_eve

I feel like all I'm asking lately is stuff about traveling, sorry! We've flown a lot with Rosie, but we've never brought a car seat with us before. We're bringing Thomas's car seat but he is flying on my lap, so we won't be able to install the seat on the plane. What's the best way to fly with the infant seat- check it at the counter, check it at the gate, or bring it on the plane?