The supplier remains the operating airline
The wet lessor generally provides the aircraft under its own air operator certificate and is responsible for the flight crew and operational control defined by the contract.
ACMI describes the core package
The abbreviation refers to aircraft, crew, maintenance and insurance. Fuel, airport handling and commercial costs are commonly handled separately by the customer, depending on the agreement.
Airlines use wet leases for flexibility
They can cover seasonal peaks, delayed aircraft deliveries, maintenance shortages or sudden network needs without permanently expanding their own fleet.
Passengers may see another airline's aircraft
The flight can be marketed by one airline but operated by a wet-lease provider, sometimes with mixed branding and crew uniforms.
Regulators can restrict or approve the arrangement
Authorities may require specific approvals, especially for long-term wet leases or when the operating airline is based outside the customer's jurisdiction.
Cost depends on utilization and contract terms
Wet leasing can be expensive per hour, but it may still be cheaper than leaving a schedule uncovered or owning surplus aircraft for short periods of demand.
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