United Airlines currently has 24 Boeing 747-400 in service.
Southwest airlines only has Boeing 737s. Nothing else.
No.
the planes usually used by airlines are the Boeing 747 to 787 or airbus a300-380
The First in the World is Tiger Airways And, The First Airlines in Asia is Philippine Airlines
The Maximum Take-Off Weight for a Boeing 747-100 is 333, 390kg; a Boeing 747-200 and 747-300 is 377,842kg; a Boeing 747-400 is 396,890kg; a Boeing 747-400ER is 412,775kg and the Boeing 747-8I is 442,253kg.
The primary users of 737's are Southwest Airlines Continental Airlines Ryanair Alaska Airlines
747
They have a few Airbus A320 NEO's on order, but no signs of a 747. They are getting 777-300ER's though
Qantas are the only airline that fly the 747 400er
Boeing created the Boeing 747.
Boeing 747's are manufactured by Boeing Commercial Aeroplanes.