Which airline revolutionized transportation loyalty programs by introducing the first frequent flyer program that allowed miles to be earned based on distance flown rather than just number of flights?

In the competitive transportation industry, brand loyalty can make or break a company's success. Airlines, rideshare services, and automobile manufacturers all invest heavily in loyalty programs and marketing strategies to retain customers. This trivia question explores a revolutionary approach that transformed customer retention in the transportation sector through innovative loyalty program design. Test your knowledge about this game-changing strategy!

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American Airlines (AAdvantage program, 1981)
Delta Air Lines (SkyMiles program, 1983)
United Airlines (Mileage Plus program, 1982)
Pan American World Airways (WorldPass program, 1980)