You can also specify
certain fare classes when searching for airfare, since the fare class is a big factor in determining your rank in the upgrade hierarchy and the amount of the cash co-pay, if any, that you must provide in addition to the miles.
In particular I know that I'll have trouble using the systemwide upgrades that come with higher status because they are restricted to
certain fare classes on international flights.
Holders of certain Delta Air Lines - affiliated cards receive annual certificates for a companion to fly for free in coach,
in certain fare classes.
The free companion ticket alone can benefit cardholders immensely, but keep in mind that
certain fare classes are restricted.
The free companion ticket alone can benefit cardholders immensely, but keep in mind that
certain fare classes are restricted.
Unfortunately, international flight upgrades are quite steep, restricted to
certain fare classes, and only available to Velocity Gold and Platinum members.
This discount only applies to
certain fare classes, and travel must be booked through a Delta Private Jets representative.
Complimentary elite upgrades are available close to departure, and
certain fares classes can be upgraded further in advance.
These rules are much more straightforward than companion tickets offered by other airlines, which often restrict eligibility to
certain fare classes.
Certain fare classes are ineligible for accrual.
It doesn't confer the ability to create award space when
certain fare classes are available, but it does offer some excellent perks including full Admirals Club membership and a dedicated customer service team.