Last modified on 16 June 2013, at 21:55

available seat mile



available seat mile (plural available seat miles)

  1. (aviation) A measure of an airline flight's passenger carrying capacity. It is equal to the number of seats onboard an aircraft multiplied by the distance flown in miles. Seats that are not available for sale to revenue-paying passengers (e.g., seats reserved for crew rest, etc.) are excluded from this calculation.