United Airlines is one of the major American airlines, known for its extensive domestic and international network, high-quality service, and a range of travel options for all types of passengers. Headquartered in Chicago, Illinois, United operates over 4,500 flights daily, serving more than 350 destinations across the globe. The airline offers a variety of booking and reservation options to make the travel experience as smooth as possible for passengers. Customers can easily book flights through United’s website, mobile app, or by calling their customer service center. On the website, travelers can search for flights by entering their departure and arrival cities, dates, and passenger details. United offers several classes of service, including Economy, Economy Plus (which provides extra legroom), Business, and First Class.