Travelers frequently choose United Airlines for its massive global route network and its membership in the Star Alliance, the world's largest airline alliance. This allows passengers to earn and redeem MileagePlus miles across more than 25 partner airlines, providing seamless access to over 1,300 destinations. United is also a leader in "premiumization," investing heavily in its Polaris Business Class and Premium Plus cabins, which feature high-end amenities like Saks Fifth Avenue bedding. Additionally, their "United Next" strategy has introduced hundreds of new aircraft with larger overhead bins, seatback entertainment at every seat, and high-speed Wi-Fi. For many, the choice is also hub-driven; travelers based in Chicago (ORD), Denver (DEN), Newark (EWR), or San Francisco (SFO) choose United because it offers the most non-stop frequencies and the most robust domestic connectivity from those locations.