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United Airlines, Inc. is a major American airline headquartered at the Willis Tower in Chicago, Illinois. United operates an extensive domestic and international route network across the United States and all six inhabited continents primarily out of its eight hubs, with Chicago–O'Hare having the largest number of daily flights and Denver carrying the most passengers in 2023.
Computer reservation systems, or central reservation systems ( CRS ), are computerized systems used to store and retrieve information and conduct transactions related to air travel, hotels, car rental, or other activities. Originally designed and operated by airlines, CRSs were later extended for use by travel agencies, and global distribution ...
Airline reservations system. Airline reservation systems ( ARS) are systems that allow an airline to sell their inventory (seats). It contains information on schedules and fares and contains a database of reservations (or passenger name records) and of tickets issued (if applicable). ARSs are part of passenger service systems (PSS), which are ...
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History of United Airlines. United Airlines is the third largest airline in the world, with 92,795 employees (which includes the entire holding company United Airlines Holdings) and 948 aircraft. It was the brainchild of William Boeing and emerged from his consolidation of numerous carriers and equipment manufacturers from 1928 to 1930.
The name of the travel reservation system is an abbreviation for "Semi-automated Business Research Environment", and was originally styled in all-capital letters as SABRE. [1] It was developed to automate the way American Airlines booked reservations. In the 1950s, American Airlines was facing a serious challenge in its ability to quickly ...