Those who still lack an identification that complies with the new federal law “may be diverted to a different line, have an extra step,” Kristi Noem says.

New leeway around the May 7 deadline ensures you can still board a domestic flight, but you'll be subject to additional security measures.

State government offices that issue driver’s licenses and state IDs have seen a significant increase in demand for REAL ID and some have extended their office hours to meet the demand. Some officials have recommended people wait for a while to get REAL ID compliant licenses and cards if they don’t have flight planned in the next few months.