If you’re flying with Delta Airlines and wondering what terminal is Delta Airlines at LHR you’ll be pleased to know that Delta operates out of Terminal 3 at London Heathrow Airport (LHR). This terminal is well-equipped with a variety of amenities and services to ensure a comfortable travel experience. Whether you’re arriving, departing, or connecting through London, Terminal 3 offers efficient facilities and a range of shopping and dining options. Make sure to check your flight details and confirm terminal information closer to your departure date for any potential changes.