Global Premier Upgrades on Lufthansa-operated flights are valid for one-segment, one-cabin upgrades on any multi-cabin international flight operated by Lufthansa. You may request Global Premier Upgrades as early as time of ticketing in order to upgrade from Lufthansa Economy or Business Class to the next higher cabin. Upgrades are subject to availability and valid for paid, published fares only. The following Lufthansa fare classes are eligible for Global Premier Upgrades: B, C, D, E, G, H, J, M, Q, U and Y. U.S. government fares are also not eligible for electronic Global Premier Upgrades on Lufthansa-operated flights. Please see the terms and conditions below for specific eligibility rules.