The hotel provides a free shuttle service that runs 24 hours a day between Newark International Airport and the Robert Treat Hotel. The shuttle runs every 30 minutes in both directions, on the hour and the half-hour. From the airport, the shuttle departs from Station E on the monorail system. The monorail system is closed due to construction, so there is a monorail replacement bus system available. The monorail replacement bus can be boarded near the ground transportation location in each terminal of the airport, to take you to Station E to board the free hotel shuttle.