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Which airline has the biggest or oldest fleet? Here's how Delta, United, American and Southwest compare
businessinsider.com/airline-fleets-compared-delta-united-american-southwest-boeing-airbus-age-2025-5
American Airlines, Southwest Airlines, and United Airlines planes at San Francisco International Airport.
Tayfun Coskun/Anadolu via Getty Images
United, Delta, American, and Southwest operate the world's largest airline fleets.
Business Insider compared the age, size, and makeup of the…
This story appeared on businessinsider.com, 2025-05-24 08:37:01.