Deductible?
It all depends on your adjusted gross income. You can deduct medical expenses over a certain amount if you itemize (no short form). However, I doubt that you'd be able to deduct the airfare. I'd definitely ask a tax specialist on that one. Here's a link to an IRS information sheet on it:
http://www.irs.gov/uac/Newsroom/Deducting-Medical-and-Dental -Expenses