Judging which airline is 'best' is a pretty subjective task. If one is interested in passenger satisfaction, there are a number of available statistics to try to find airlines that are at the top of the heap. According to the US Department of Transportation statistics, Hawaiian Airlines had the least number of passenger complaints and the fewest number of lost bags of any airline operating in the U.S. in 2005. They also led the industry in on-time departures and had the fewest number of canceled flights. (Statistics for foreign carriers are neither readily available nor particularly reliable.) On the other hand, if one is interested in air safety as an indicator of 'best,' one needs to look at the available statistics on fatalities. While there are a number of newer carriers that have no fatalities, there are only two airlines in the world that have been in service since airlines began operating in the 1920s that have never had a fatality. One is QANTAS and the other is Hawaiian Airlines.
The answer will vary depending on who is asked. Many answers will be Nationalistic. As an example, a Frenchman may claim Air France is the best etc.
Among the frequent flier community, Singapore Airlines and Cathay Pacific are consistently rated very highly. Spirit Airlines is rated bottom.
Emirates is gaining increasing favor too. Still it comes down to opinion.
Currently the holder for the worlds best airline (as of 2010) is Cathay Pacific
He correctly points out (at the time) that Qantas has never had a fatal crash.
Delta Air Lines
The world's largest airline company in terms of the number of passengers carried is Delta Air Lines.
Asiana Airlines from Korea.
Qatar Airlines was named the best airline of the world and won the award in 2012 at the world airline awards that were held at the Farnborough air show.
Columbus is the worlds best explorer.
Delta
delta
They were just voted by 18 million travellers and Skytrax as the world's best airline, best middle east airline and best cabin crew. So yes, they are good.
airline pilots should wear loafers
The best credit card for obtaining airline miles will be dependent on which airline you prefer. Venture Reward by Capitol One is rated as the top credit card for airline miles currently.