A membership account identifier assigned by airways or airline alliances to people taking part of their loyalty applications. It serves as a singular file key, monitoring gathered miles or factors earned by means of journey, purchases, or different qualifying actions. For example, a passenger enrolled with United Airways’ MileagePlus program will obtain a definite alphanumeric sequence which, when introduced throughout reserving or check-in, ensures correct crediting of flight exercise to their account.
This identifier is essential for accessing program advantages, which can embody precedence boarding, complimentary upgrades, entry to airport lounges, and award journey. The proliferation of those applications started within the early Eighties, remodeling the journey business by incentivizing buyer loyalty and offering airways with priceless information for advertising and marketing and operational optimization. The systematic seize of journey information underpins personalised providers and focused promotions.