Air freight: speed at a price
The right choice when a delay costs more than the shipping rate. High-value electronics, spare parts holding up a production line, samples needed this week, anything with a short shelf life. Airport customs handling is tied closely to the flight, so the paperwork has to be correct before the cargo is tendered. Cost per kilo is the highest of the main modes, and capacity is limited by what fits on the aircraft.
Typical fit: urgent, compact, high value.