Mile Yield —The amount of passenger revenue earned per RPM during a reporting period.

RASM —(Operating or Passenger) Revenue per ASM. The amount of operating or passenger revenue earned per ASM during a reporting period. Passenger RASM is also referred to as “unit revenue.”

RPM —Revenue Passenger Mile. One revenue-paying passenger transported one mile. RPMs equal the number of revenue passengers during a reporting period multiplied by the number of miles flown by those passengers during that period, RPMs are also referred to as “traffic”.