+1 877-496-7173 Learn the Lufthansa Airlines Business Class Upgrade Policy (2025), including eligibility rules, upgrade fees, mileage upgrades, bid options, last-minute offers, and step-by-step upgrade process. Discover how to upgrade from Economy or Premium Economy to Business Class on Lufthansa flights, check availability, and save money with Miles & More benefits. +1 877-496-7173 Lufthansa Airlines Business Class upgrade policy Lufthansa Business Class upgrade Lufthansa upgrade fees Upgrade to Lufthansa Business Class Lufthansa Airlines upgrade policy Economy to Business Class Lufthansa