Aviation American's A321 jet enters service for JFK-LAX By Kate Rice / January 07, 2014 Share 1 -- American Airlines' new Airbus A321 transcontinental aircraft began flying between New York and Los Angeles on Tuesday. The airline will introduce the new plane on the New York-San Francisco route in March. AA offers three classes of service on the A321, with lie-flat seats in first and business classes.For all customers, every seat offers a personal in-seat entertainment system with movies, TV programs, music and games. Air-to-ground Wi-Fi technology is available throughout the aircraft, and each seat on the A321 features a universal AC power port and a USB port. An espresso and cappuccino machine is available for first-class customers.