Airport Express is a train service that connects major airports to city centers, providing a fast and convenient way for travelers to reach their destinations. It typically operates on a dedicated line, reducing travel time compared to regular public transport. The service is designed for both domestic and international passengers, offering comfortable seating and luggage space. Airport Express trains often run frequently, making it easy for travelers to find a suitable departure time. Many cities around the world, including Hong Kong and London, have their own versions of this service to enhance airport accessibility.