Air Passenger Load Factor (LF)

As defined by MIT (2020), adapted to the metric system, Load Factor (LF) is the Number of Revenue Passenger Kilometer (RPK) expressed as a percentage of ASK, either on a particular flight or for the entire system. Load factor represents the proportion of airline output that is actually consumed as shown in Fig.1.

Fig. 1 – Aicraft showing seats ocupied by passengers

To calculate this figure, divide RPK by ASKs. Load factor for a single flight can also be calculated by dividing the number of Revenue Passengers (RP) by the number of Available Seats (AS).

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