Can you fly without a Real ID after the May deadline?

Related <i>Flying somewhere? You may finally need that Real ID</i> (23 points, 3 days ago, 72 comments) <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=43643877">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=43643877</a>