There's no safest airline as such.Judging it safe or not depends on us...public.Many of us come across various infos about airlines....accidents or mishaps...some personal and some through news etc..When we come across such infos we consider that airline which was in a mishap to be unsafe.But yes there are many airlines that haven't been in mishap at all till date but it doesn't mean that they are the safest.But according to us...public's perception is that they're safe.According to the fatalities we judge the airlines to be safe or unsafe.But actually it depends on many other factors too.....such as the management of the airline company,maintenance,aircraft's age,training standards and also if the airlines adhere to all the rules of the standard operating procedures and also there are many factors that are not in the hands of the airline company such as weather....natural calamities.So airline fatalities can be a combination of many factors.
There are some airlines that are not
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Clearly there are some major airlines such as Southwest of the USA which have not had a passenger die in an accident and others such as United Airlines and Korean Air which have had several fatal events. Those facts don't make one airline automatically safer than the other although it does affect the public's perception of safety. The most important indicator of the overall safety of an airline is how it is regulated by its nation's civil aviation authority. Airlines operating large capacity passenger aircraft in the major industrialized countries have to follow the strictest safety regulations. While the airlines operating smaller capacity aircraft have the choice of operating under the same rules, these smaller aircraft are not certified to the same standards as larger ones. Just as importantly, the airports and air traffic control system have to adhere to similarly high standards. Beyond that, use your good common sense. If an airline is notorious for poor on time performance, lo