Featuring the largest number of aircraft of any airline,  and one of the newest fleets in the industry with a new airplane being added every 3 days on average in 2015, American Airlines takes to the skies of the 21st century as the world’s largest airline. As a member of the oneworld alliance, AA debuted the new A321T aircraft on LAX-JFK and SFO-JFK  and the new B777-300  on LAX-LHR featuring full-flat seats in both First and Business Class on every flight.