Travelers who do not present an acceptable form of ID to TSA agents will now be able to pay ahead of time or at the airport — but it doesn't mean they're guaranteed to fly.

The Transportation Security Administration is imposing a fee for travelers who try to fly without a Real ID or another acceptable form of identification.

The Transportation Security Administration still urges everyone across the nation to get their Real ID. Here's how.

Travelers without REAL ID have been allowed through airport security with extra screening and a warning. That changes now.

The TSA warns that, without a REAL ID or this new program, you could face "additional delays which may result in a missed flight."