My wife and I found this compact car seat transporter to be very handy, and easy to manage and store

The Brica Smart Move Car Seat Transporter is a nice accessory for traveling with your little one and their carseat

We'll be able to wheel him around the airport and then use his car seat on the plane and in any rental vehicles, and this transporter is very compact when not in use (although still heavy).We tried 2 convertible style car seats in

the dolly costs the same as my cheap-o travel car seat