Delta Air Lines has several "bests". It is the largest airline in the world (by passenger numbers), is headquartered at the world's largest airport in Atlanta, is the oldest airline in the US and the sixth oldest in the world, serves the third largest number of destinations and is one of only six airlines that fly to every continent.
Like most major US airlines, it is known for the relatively high age of its cabin crew.
Delta is one of the founders of the Sky Team alliance.
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