There is a shuttle bus that runs between Terminals A and C at Newark Liberty. It looks like the shuttle closed down sometime after 11 PM. Does anyone know what time it reopens?
While at the airport overnight I noticed there was a "closed" sign placed near the C71 shuttle door around 11 PM. I made it over to Terminal A around 4:30 AM and noticed people arriving through the A28 shuttle door around 5 AM. So I believe the shuttle runs daily from 5 AM - 11 PM.