The new jet, Boeing 777X, delivers next level passenger comfort and could even bring lower fares on long-haul flights. Your next fly-cruise vacation just got closer.

Boeing claims it to be the largest and most efficient twin-engine plane on the planet.

Its revolutionary design promises a significant increase in fuel efficiency that can reduce operation cost by up to 18 per cent, a portion of which should translate into a fall in fares for long-haul flights.

The interior also features comforts such as dimmable windows, higher ceilings, and an anti-dry, jetlag-beating ventilation system.

The first flight of 777X is scheduled for spring 2019 and first delivery is slated for 2020.

The 777X family has two sisters, the 777-8, which has a smaller capacity, and the 777-9, which has the opposite trade-offs.

Currently, seven airlines: Emirates, Qatar, Etihad, Lufthansa, SIA, Cathay and ANA have placed orders for the 777-9 which can carry up to 414 passengers in a two-class service.

Emirates boasts the largest fleet of the 777-9 and also has orders placed for the 777-8, along with Qatar and Etihad.

Meanwhile, Qantas remains undecided between Airbus and Boeing to service their project to link any city in Australia with anywhere else in the world with a direct flight by 2020.

Many airlines are planning to refresh their fleet on long haul routes with the delivery of the 777X.

Singapore Airlines for example, will be replacing the 777-300ER which is near their retirement age, when the 777-9s enter service in 2021/22.

The new aircraft with its massive wing-span of 71.8 metres will be hard to miss.

It will be one of the first commercial aircrafts to feature folding wing tips just so it can fit into most modern airports.