Convenient parking. We have three parking lots that allow you to walk to the Passenger Terminal in less than 5 minutes. Remote parking is also available, along with convenient shuttle service. Lighted signs will direct you to remote parking when the three primary lots are full; just follow the signs. All lots are patrolled by the Mercer County Sheriffs Office. All parking is currently free. Click here for parking lot locations for Trenton-Mercer Airport.