United Fare Class Chart. Basic Economy tickets may be booked in various fare classes. Retroactively finding the fare class for a flight already booked.
Premier members also earn bonus award miles which are determined by the members status level when flying United and United Express. See the upgrade regions chart for full details on upgrade eligibility and fare restrictions. What has changed just a bit is the alphabet soup of fare classes used.
If you upgrade from economy to PPlus you will earn miles based on the pre-upgraded fare class.
Dan leaving just IN for Saver First Class on 2 cabin aircraft Economy BusinessFirst or for Business Class on 3. See the upgrade regions chart for full details on upgrade eligibility and fare restrictions. The co-pay is waived for Premier members. United Airlines upgrade chart.