Which airline was the first to introduce a loyalty program that allowed customers to earn miles through credit card spending rather than just flying?

The transportation industry has seen significant evolution in customer loyalty programs over the years, particularly in the airline sector. These programs have transformed from simple frequent flyer miles to sophisticated ecosystems that leverage data analytics and strategic partnerships. Test your knowledge about one groundbreaking loyalty program innovation that changed how airlines retain customers and create brand loyalty.

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American Airlines with AAdvantage in partnership with Citibank (1987)
British Airways with Executive Club in partnership with Barclays (1991)
United Airlines with Mileage Plus in partnership with Chase (1985)
Delta Air Lines with SkyMiles in partnership with American Express (1989)