You generally cannot "transfer" miles directly from one Star Alliance frequent flyer program to another (e.g., moving miles from United MileagePlus to Lufthansa Miles & More). Each airline's loyalty program is an independent financial entity, and they do not allow the direct 1:1 migration of balances between accounts. However, the true power of the Star Alliance network lies in redemption and earning across partners. You can use your miles from one airline to book award seats on any of the 26 member airlines, provided there is "Partner Award" availability. Furthermore, you can earn miles on your preferred "home" program whenever you fly with any other Star Alliance partner by simply providing your frequent flyer number at booking. In 2026, some newer "Star Alliance Rewards" initiatives in specific regions (like Australia) have experimented with more flexible points conversion models, but the standard rule remains: miles stay in the program where they were earned, but they can be spent to fly on any airline within the global alliance.