That's sort of a loaded question where you have to consider a lot of things like price, musical taste, and what kind of travel.  You just looking at throwing it in a airplane bin or you backpacking with it?  Anyway, this article mentions the Composite Acoustics Cargo Travel guitar as being one of the best and you can read the Review.

Best Travel Guitars

Martin backpacker is also great, I prefer steel string version and washburn rover are also good options and a lot cheaper.