United upgrading seats, bins, adding Wi-Fi

United Airlines plans to invest more than $500 million to improve seating on its planes and to create the same look and feel across its fleet in the wake of United and Continental's merger last year.

The airline will be adding flat-bed seats to first and business class cabins on long-haul aircraft, increasing overhead bin space on some jets and adding Wi-Fi to other planes. Former Continental planes will get Economy Plus seating a coach section with more legroom - and Channel 9, which allows passengers to listen to air traffic control conversations with pilots. AP