Wednesday marked the first day that those looking to board domestic flights needed to present a Real ID​, passport, or military ID — or go through longer screening times.

After weeks of long lines at DMV offices across Illinois and the rest of the country, Real ID requirements are officially in effect at airports beginning Wednesday. Travelers are now required to have Real ID-compliant identification to board domestic flights,

Real ID enforcement began smoothly at O’Hare Airport Wednesday, with prepared travelers and trained TSA staff helping avoid major delays.