US airlines have the world's four largest fleets. Here's how the Boeing and Airbus planes operated by Delta, United, American ...

For frequent flyers and aviation enthusiasts alike, the question of which airline boasts the biggest or oldest fleet often ...

In a head-to-head comparison with Frontier ... those are a direct result of each carrier's number of aircraft in-fleet. Southwest takes the win here by boasting a significant number of planes ...

The Max 8s make up just a fraction of Southwest's fleet of 750 aircraft, but 34 fewer planes — which seat 175 passengers and make multiple flights a day — mean fewer flights. Southwest said ...

United and Southwest prefer Boeing planes ... to show how the Big Four airlines' fleets compare. With 1,023 planes, United Airlines has the largest fleet in the world, according to data from ...

United and Southwest ... compare. United Airlines United Airlines is the only carrier with over 1,000 planes.Gary Hershorn/Getty Images With 1,023 planes, United Airlines has the largest fleet ...