Baby is a year old but will be 14 month when we travel internationally for long hours to Asia & back. I currently use Britax Boulevard G4 Convertible Car Seat( http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1) in my sedan and my baby has been riding in it for few months now and fits him fine when front facing.
My boy is not a short and thin. I think the car seat we have now will be too snug & heavy to take to airport and in plane.

What kinda of light & easy to travel car/plane seat you suggest for my boy for our travel?

Thanks a lot.