Twenty-one-year-old Arthur Olvera Junior of Hammond is charged with aggravated unlawful use of a weapon.
Police in Gurnee say Olvera and a woman refused to move forward in line once they approached the gate's metal detector.
The couple was then chased into the parking lot when they jumped out of line.
Gurnee police officers say they recovered a loaded .40-caliber handgun.
The woman was not charged.