Most Economical Jet

Emirates and Cathay Pacific are among the clients (see the history here).

Over 50 percent of the aircraft in this range are made from light composites, resulting in reduced weights and increased efficiencies. While the A350-800, the smallest in the A350 series, will consume 8 percent less propellant than the Boeing B777, the A350-1000 will consume up to 25 percent less.

Although the double-decker has been in use since 2007, it is still the most fuel-efficient plane in the sky due to its large dimensions and cruising distance and compared to the B747 - the largest until now. Today, a fleet of 57 Airbus A380s is in use with six airlines - Singapore Airlines, Qantas, Emirates, Lufthansa, Air France, Korean Air and China Southern.

In comparison to the B747, the Super Jumbo delivers 20 per cent less consumption thanks to a mix of better engine performance and the use of light composites. As the first Boeing airplane to be developed since the B777 almost 16 years ago, it features many innovative features such as electrochromic "auto-dimming" window and a gas filter system for better quality flying atmosphere.

American Airlines, Qatar Airways and British Airways will all be receiving their jet services over the next few years. It consumes 20 per cent  less propellant than a similarly large B767, while providing more on-board convenience with 60 per et  less jet noises, a system to eliminate turbulence and enhanced aerodynamic performance.

Upgraded from the latest B737 airplanes, this release of the B737 range is a true B737 model. This engine, which is competing with the A320neo, currently has nearly 500 orders for American Airlines and Lion Air (see history here), with delivery planned for 2017. It will be up to 12 percent more economical per seated passenger than the B737s currently in use.

At 3 metres, it is the longest airliner in the can. In comparison with its 747-400 counterpart, the 747-8 emits 16 percent less CO2 per kilometer of seats.