Which airline has the biggest or oldest fleet? Here's how Delta, United, American and Southwest compare.
Briefly

The article highlights that US airlines dominate the global aviation market, with the largest fleets belonging to United, Delta, American, and Southwest. United Airlines leads in fleet size with over 1,000 planes but has the oldest average fleet age. Delta operates a diverse fleet of both Boeing and Airbus aircraft, including unique wide-body Airbus jets, while American Airlines balances between the two manufacturers. Southwest, as a budget airline, relies solely on Boeing 737s. Business Insider provides comparative charts and data to illustrate the specific differences in the fleets of these major airlines.
While United extensively utilizes Boeing planes, Delta is unique in its operation of wide-body Airbus jets, showcasing differences in fleet preference among major US airlines.
United Airlines boasts the largest fleet worldwide, exceeding 1,000 planes, yet it also has the oldest fleet on average among US carriers.
Read at Business Insider
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