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.

Travelers without a REAL ID or passport will face a new $45 TSA fee starting Feb. 1. Here’s how Confirm ID works and how to avoid it.

Those without a Real ID will have to pay a $45 fee to use a modernized alternative identity verification system.

TSA offers an online portal, TSA ConfirmID, where travelers can pay the $45 fee before arriving at the airport. Passengers ...

Anyone planning to fly needs a REAL ID or other accepted form of identification to avoid paying fees at airports starting ...

The fee is designed to recover administrative costs associated with additional screening, according to the TSA.