Available Seat Miles

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Available Seat Miles

A measure of an airplane's ability to carry passengers. It is calculated by taking the number of seats available on the plane and multiplying by the number of miles the plane flies. Available seat miles are important because they are used to calculate the cost per available seat mile and the revenue per available seat mile, which are both used to help determine an airline's profitability.
References in periodicals archive ?
In the first stage, cost measures (cost per available seat mile; salaries, wages, and benefits per available seat mile; fuel expense per available seat mile; fuel cost; and gallons of fuel used) are inputs to the outputs of load factor and fleet size.
[yen] Operating cost per available seat mile (CASM) increased 9.9%, from 10.3 cents in 1Q11 to 11.3 cents in 1Q12.
Cost per Available Seat Mile (CASM), including interest expense but excluding fuel and the impairment charge, increased to 8.29cents for the fourth quarter of 2011, from 7.78cents for the same quarter of 2010, primarily as a result of significantly higher maintenance expenses and an increase in the unit cost of labor and benefits.
Total fourth-quarter 2018 cost per available seat mile (CASM) was USD 0.15.21, up 2.7 percent from fourth quarter 2017.
For Q4, Spirit estimates its cost per available seat mile excluding fuel, or CASM ex-fuel, will be up 5%-6% year over year.
Cost per available seat mile excluding special items and fuel ("CASM ex-fuel") for the fourth quarter 2011 was 6.08 cents, an increase of 8.2% year-over-year.
Operating cost per available seat mile (CASM) increased 4.3% from 8.6 cents in the third quarter 2017 to 9.0 cents in 3Q18, driven by a 31.6% increase in the effective price of jet fuel.
Total third-quarter 2018 cost per available seat mile was 14.54 cents, up 9.4 percent from third quarter 2017.
Total operating expenses for the fourth quarter of 2009 increased 7.1 percent year over year to USD280.9 million, resulting in an operating cost per available seat mile (CASM) of 11.79 cents, up 7.6 percent versus the same period a year ago.
Additionally, American said it now expects Q2 cost per available seat mile, or CASM, excluding fuel and other items, will be up about 2.5% year-over-year, below its previous guidance of up about 3.5%.
Total fourth-quarter cost per available seat mile, or CASM, was 14.71 cents, up 7.1 percent from fourth-quarter 2016.