Douglas DC-2 and DC-3 service introduced. Flight attendants, called "stewardesses," added to flight crews.
Delta headquarters moves from Monroe to Atlanta.
Delta contributes to the war effort. Modifies 1,000+ aircraft, over-hauls engines/instruments, trains Army pilots and mechanics.
First converted DC-3 cargo ship, Delta No. 43.
Official corporate name becomes Delta Air Lines, Inc. Company recognized by National Safety Council for more than 300 million passenger miles and 10 years of flight without a passenger or crew fatality. C. E. Woolman is President and General Manger. Delta is the first airline to fly living vegetable plants (160,000 tomato plants).
Delta starts regularly scheduled cargo service. The one-millionth passenger boards. First airline with nonstop Chicago-Miami flights.
Delta's fleet totals 644 available seats. Receives National Safety Award for more than one-half billion passenger miles without a fatality.
First U.S. interchange service with TWA personnel flying Delta planes from Cincinnati to Detroit and Delta crews flying TWA ships south to Atlanta, Miami and Dallas.
Delta’s first coach service starts: discounted-fare night flights between Chicago and Miami.
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