The Emirates Business Class Upgrade Cost is often based on a predetermined pricing differential and is ultimately decided by the fare class and route the traveler is taking. The length of the flight frequently causes the fare differentials to increase; in general, the greater the distance, the greater the fare differential. So, upgrading on a brief flight can be less expensive than upgrading on a longer one.
https://airlinespolicy.com/blo....g/how-to-upgrade-emi
