Thanks for asking! The Ravenna does put out a lot of sound for its size, but unfortunately it is too big for most airplane overhead compartments. You can find dimensions on this page under the Specifications tab, and you can see what it looks like in relation to a person on our Harp Finder page.
There is an option to order the Ravenna 26 with burgundy or green lacquer, but because of the way it is constructed, we can't make it out of a solid wood like bubinga. The body is made of laminated birch with a wood-grained vinyl veneer on the outside, and the material allows us to basically fold a harp body out of a single sheet. It is a huge time savings in the building process, and that is the main reason the Ravenna costs so much less than our Allegro 26 or FH26 harps. Building harps out of solid wood is much more labor-intensive, and therefore those harps cost more.
Have you considered getting a flight case made to travel with your harp? It's not as easy or cost-effective as being able to carry the harp on to the plane, but it might be a worthwhile compromise if you're looking for the deeper tone that comes with having a larger harp body.