Well, at least using my experience with one trip, it works.
In my previous post, “In theory: how to survive when on travel without a car – the folding bike”, I discussed this idea for staying in a city without a car. I showed a picture of the bike and a picture of the bike folded in a suitcase.
Here is a photo of the bike, unpacked from the suitcase, after a trip of 2,329 miles via airplane: