Work out aircraft utilisation hours instantly with clear inputs, formula shown and shareable results.
Utilisation is block hours divided by days in service. It drives unit cost directly: ownership, insurance and much of the maintenance bill are time-based, so spreading them over 12 hours a day instead of 6 halves those cost elements per block hour.
Utilisation
Daily utilisation = block hours / (aircraft x days in service)
Roughly 9-12 hours a day for short-haul narrowbodies and 13-16 for long-haul widebodies. Regional and business aircraft are much lower.
There is little slack to recover from a delay or a technical problem, so disruption propagates through the day.