Which airline's loyalty program was the first to sell miles to third-party partners (like credit card companies and hotels), creating what is now a standard industry practice worth billions?

Airline loyalty programs have revolutionized customer retention strategies across the transportation sector. These programs not only drive brand loyalty but have become sophisticated profit centers worth billions of dollars. In fact, for some airlines, their loyalty programs are valued higher than their actual flight operations! Test your knowledge about one of the most influential loyalty programs that changed how travelers interact with transportation companies.

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American Airlines' AAdvantage program
United Airlines' Mileage Plus program
British Airways' Executive Club
Delta Air Lines' SkyMiles program