Electric trains on the branch operate between Penn Station and Huntington, providing local service on the branch; additional weekday service operates between Penn Station and Hicksville. Trains to the Ronkonkoma Branch provide supplemental service; these usually run express, stopping only at Mineola and/or Hicksville. Additional service to Mineola is provided by Oyster Bay Branch trains, and a handful of Montauk Branch trains also stop at Mineola and Hicksville on weekdays; one Montauk-bound train makes a stop at Hicksville overnight, though the vast majority of Montauk Branch trains that run on the branch do not stop. Service on the unelectrified portion of the branch between Port Jefferson and Huntington is usually provided by diesel shuttles running between Port Jefferson and either Huntington or Hicksville, where customers transfer to electric trains for service to New York City. During rush hours, the branch sees extra service, including direct electric service to Atlantic Terminal, service to Penn Station that bypasses Jamaica, and direct service to Hunterspoint Avenue, Long Island City, or Penn Station from stations east of Huntington.