"Frequent flyers" are individuals who travel by air often, typically for business or leisure. Airlines often reward these travelers with loyalty programs that offer benefits such as priority boarding, free upgrades, and access to exclusive lounges. These programs encourage customers to choose the same airline repeatedly. To qualify as a frequent flyer, travelers usually need to accumulate a certain number of miles or flights within a specific timeframe. Many airlines, like Delta or American Airlines, have tiered membership levels, allowing frequent flyers to enjoy increasing perks as they reach higher status.