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Load factor, RASK and CASK

Track airline unit revenue and unit cost each month.

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Finance & unit economics
Aerospace & aviation

How it's worked out

  • Load factor = RPK ÷ ASK. RASK = revenue ÷ ASK. CASK = cost ÷ ASK. Break-even LF = CASK ÷ yield
  • Same period
NoteBreak-even load factor uses average revenue per RPK, so it shifts when fares change.

Source: IATA and ICAO airline economics definitions

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