Car seats for air travel

[Lala]

I know there have been numerous car seat-related posts on here, and I read through some of them, but I'm hoping someone can recommend a good convertible car seat for use on an airplane that would also fit in small rental cars. I have the Britax Advocate, but it's way too wide to bring on a plane, so I'm looking for something narrower. I'd also like one that rear-faces for a long time. Any recommendations? Thank you!

[scrub-jay]

We love the Sunshine Kids Radian. Very narrow & tall, but we used it rear facing and have flown with it. It has a stainless steel frame, so it is ridiculously heavy.

[alison]

We used a Coccoro.

http://www.combiusa.com/products/item.aspx?item=12

It's awesome, because it's just 11 pounds. We attached it to a Go Go Kidz, and off we went. It even fits through airplane aisles, so you don't have to detach the car seat (nor your kid from the car seat, for that matter) until you get to your row. Same for getting off the plane. It was GREAT!

[spotty_dog]

We flew with a Cosco Scenera. Lightweight and narrow and fairly easy to install securely -- albeit tougher RF than FF -- and the new one goes to 40 pounds RF (and I think it has good longevity in the height too.) Also, cheap was a good thing for us when choosing a backup seat!

[Pollyanna]

We have the Britax Boulevard and it fits perfectly on a plane even though its a large seat. The Britax Roundabout is more narrow so easier to manage in the airport and on the plane.

[Michele]

I've only flown with a Radian but it was great.

[alison]

We tried out a friend's Scenera, and my dd hated it. Super light and a steal. If you can, try them out before heading out on a long flight.