The 10 Busiest Airports in the United States. Hopper has compiled a list of the United States' 10 busiest airports based on passenger traffic.
Fly from Sydney to Hong Kong on a Qantas Airbus A380 and you'll find the 180-degree fully flat beds, but a Qantas Boeing 747 on the same route has angled lie-flat beds. To make things worse, both Qantas products are called Skybeds â- but only the A380's second-generation Skybed is a fully-flat seat.
Seat width. Again, the seat width is similar across most airlines. Emirates, Qantas and United offer the smallest option at 17 inches (a touch over 43 cm) while Singapore Airlines has the biggest economy seats (on some planes) at 19 inches, or just over 48 cm.