This unit measures the total capacity of a transit system or airline by multiplying the number of available seats by the number of miles traveled. It serves as the baseline denominator for calculating revenue and operating costs. Analysts use available seat-miles to determine how efficiently a carrier is deploying its fleet and pricing its routes.
Heard on the job
Our cost per available seat-mile jumped this quarter due to the sudden spike in aviation fuel prices.
Also heard as
- ASM
- available seat-mile