Overview
A frequent-flyer program (FFP) is a loyalty program offered by an airline, designed to encourage enrolled customers to accumulate points — also called miles, kilometres, or segments — that can later be redeemed for air travel or other rewards. Points earned may be based on fare class, distance flown, or amount paid, and in recent years, co-branded credit and debit cards have become an even larger source of earned points than actual air travel for many program members. Additional points can often be earned through spending at partner retailers, car rental companies, and hotels, reflecting how far frequent-flyer programs have expanded beyond their original airline-only scope. These programs have become a major source of airline revenue in their own right, as carriers sell miles to partner companies and banks, sometimes generating more profit from the loyalty program itself than from ticket sales.
History
American Airlines launched the first modern frequent-flyer program, AAdvantage, in 1981, followed quickly by similar programs from United and other major US carriers as airlines sought new ways to build customer loyalty following deregulation. The concept expanded rapidly through the 1980s and 1990s as computerized reservation systems made it practical to track individual passenger mileage accumulation at scale across millions of customers. Co-branded credit card partnerships, which let cardholders earn airline miles through everyday spending rather than only through flying, became an increasingly significant driver of program growth from the 1990s onward. By the 2000s and 2010s, frequent-flyer programs had become such valuable assets in their own right that several airlines restructured or sold stakes in their loyalty programs separately from their core flying business, reflecting how central these programs had become to overall airline profitability.
Design & Specifications
Loyalty programs are supported by extensive database and analytics systems tracking member activity, tier status, and redemption across partner networks.
Operations
Airlines manage frequent flyer programs continuously, adjusting earning and redemption rules and coordinating with partner airlines and companies.
See also
References

| Category | Aviation Business & Pilot Operations |
| Type | Airline loyalty program |
| First Modern Example | American AAdvantage, 1981 |
| Major Revenue Source | Co-branded credit cards |
| Status | Standard airline offering |