The Singapore Airlines includes many airline-related subsidiaries. SIA Engineering Company handles maintenance, repair, and overhaul (MRO) business across nine countries, with a portfolio of 27 joint ventures, including with Boeing and Rolls-Royce. Singapore Airlines Cargo operates SIA's freighter fleet and manages the cargo-hold capacity in SIA's passenger aircraft. It has two subsidiaries: SilkAir operates regional flights to secondary cities, while Scoot operates as a low-cost carrier.

Singapore Airlines was the launch customer for the Airbus A380 – the world's largest passenger aircraft – as well as the Boeing 787-10 and the long-range version of the Airbus A350-900. It ranks amongst the top 15 carriers worldwide in terms of revenue passenger kilometers, and is ranked 10th in the world for international passengers carried.

Singapore Airlines has announced it will launch the world's longest non-stop flight route in October, using an aircraft that offers no economy class.

The airline begins a once-daily journey in both directions between Singapore's Changi Airport and Newark Liberty Airport, which serves New York City.

The aircraft, an Airbus A350-900ULR, will feature 67 business class and 94 premium economy seats.

Singapore Airlines said non-stop Singapore-Los Angeles flights are also planned, with details to be announced at a later date.

With long-haul planes getting ever more efficient, CNBC takes a look at the current routes guaranteed to wear out any hardened traveler.

According to cnbc and wikipedia