United Airlines operates international departures from Terminal C at Newark Liberty International Airport (EWR). Here's a more detailed What Terminal Is United International Departures At Newark:
Terminal 
Terminal C is the central hub for United Airlines at EWR and is where the airline predominantly handles its international departures. This terminal is equipped with facilities dedicated to international travellers. Passengers departing on United's international flights, whether bound for destinations in Europe, Asia, South America, or elsewhere, will typically find their departure gates, customs and immigration facilities, and security checkpoints within Terminal C.
The terminal offers a range of services and amenities for international travelers, including duty-free shops, dining options, and United Club lounges where eligible passengers can relax before their international journeys. The presence of customs and immigration facilities within Terminal C streamlines the departure process for passengers flying abroad. Additionally, the terminal provides access to ground transportation options, such as taxis, car rentals, and the AirTrain for connections to other terminals or transit links.
Passengers connecting from a domestic flight to an international flight with United at EWR can follow clear signage and use the AirTrain system to efficiently transfer to Terminal C for their international departure.
In summary, United Airlines handles its international departures from Terminal C at Newark Liberty International Airport, ensuring that passengers have a smooth and convenient experience when flying to international destinations.