Is it the vanda in the pic in your gallery? If so, it would depend on the parentage of the plant, how quickly it grows, and how well you take care of it. Some Vandas stay compact and bloom at a small size (I.E. V. insignis), but others probably take longer.
If I had to give you a general guess, though, I'd say it's still a good 3-5 years away from its first bloom.
EDIT: I didn't see that pic before LOL.
Actually, depending on what species or hybrid it is, it could bloom within a year or two at that size.