World's largest airline upgrades fleet with 100 737 MAXs, 50 Next-Generation 737s

United Airlines has announced an order for 150 737 airplanes, including 100 of the new 737 MAX 9. The world's largest airline by traffic is the latest carrier to choose the newest member of the 737 family, which today eclipsed 10,000 orders overall.

Counting all variants, the 737 program has now logged more than 10,000 orders, further cementing the 737 as the undisputed best-selling jetliner in the world. The Next-Generation 737 is the most fuel-efficient and reliable single-aisle airplane today with an 8 percent per seat operating cost over the nearest competitor.