Skytrax Airline Quality Website (www.airlinequality.com) is the most reliable source for airline quality, as it consists of airline quality opinions contributed by both passengers and the experts.

Its 'Star Ranking' is the industry standard for airline quality, and reflects the quality of an airline well. Many USA carriers, like United, Continental, Delta, have their ranking dropped from 4 stars to 3 stars recently. Aeroflot, on the other hand, has its ranking risen from 2 stars to 3 stars.

Cathay Pacific, Singapore Airlines and British Airways are the only 3 airlines in the world received 5 star status.

Many news for the airline industry are also provided in the website, providing most up to date information for each airline.