Heated or cooled seats. Ultra-high-definition TV screens. Benches. Convertible beds. All-aisle access. And of course, the coveted privacy door. Ever-more luxurious first- and business-class cabins ...

United's 737-800 fleet operates on various routes from Dulles, with San Francisco being the longest route at 2,419 miles.

The Boeing 737 aircraft was delivered this week, making the carrier the first airline worldwide to operate ... LEAP-1B engines and features 20 seats in United First and 159 in economy, split ...

Supply chain issues and certification of new first- and business-class seat models have delayed deliveries to airlines.

"It's getting the seats certified, and it's not actually the butt part of the seat," Ortberg continued. "It's the cabinet and the doors ... for first class and business class. These are pretty ...

Boeing and Airbus say installations of new seats are holding up aircraft deliveries. Supply chain issues and certification of new first- and business-class seat models have delayed deliveries to ...