Is is Possible to Have Ear Surgery on Just One Ear?

Otoplasty is a procedure whereby the ear is outwardly displaced. It can occur because of a number of different reasons including loss of the antihelical fold, a large conchal bowl, trauma, and a conchoscaphal angle greater than 90 degrees.
Experience is important in correction of ear deformities. On initial consultation, a surgeon will measure specific measurements of the ear. A patient may think they only have one ear that is protruded but by measurement may have both ears protruding. These measurements are based on aesthetic anatomic criteria and should be adhered to so as not to undercorrect or overcorrect.
The four different surgeries in otoplasty should be performed by a plastic and reconstructive surgeon. These are the most effective treatments:

Scaphoconchal sutures
Conchomastoid sutures
Conchal excision
Excision of posterior skin

Yes, otoplasty can be performed on only one ear. Many patient have prominence of both ears that they would like corrected, but some patients have significant asymmetry with only one very prominent ear. In these cases, surgery to reduce the more prominent ear is indicated. It is important to remember that due to significant pre-operative asymmetries, some subtle asymmetries may persist even after surgery, but great improvements are definitely possible.
All the best,

In many cases correction of ear
asymmetry can be accomplished with a unilateral
procedure.  Unfortunately in some
cases it may not be possible to obtain symmetry in this manner and performing
surgery on both sides may be necessary. 
Under these circumstances, fine adjustments in both ears may be
necessary to accomplish symmetry and optimize the surgical result.

                  If
you’re considering otoplasty, it’s important to discuss this issue with your plastic
surgeon.  Under these
circumstances, most surgeons will attempt a unilateral procedure, but will want
the latitude to perform a bilateral otoplasty if necessary.