Air freight to Saudi Arabia costs roughly $2–6 per kg from China, $2.5–5 from Europe and $1.5–4 from India, billed by chargeable weight — the greater of actual and volumetric weight (dimensions in cm ÷ 6000). Door-to-door transit is 2–5 days into Riyadh, Jeddah or Dammam.
Rates fall steeply with volume: the per-kg price above 1,000 kg is often half the sub-100 kg rate. Below about 45 kg, express couriers usually beat air freight.