Last week I quoted a shipment: Shenzhen to Riyadh, 1.2 tons, 4.5 cbm. Pure air came in at 38 RMB/kg, 5 to 7 days. Pure ocean was cheaper but 30-plus days door to door. The client needed stock for an October promo, so we went sea-air: ocean to Jebel Ali, customs there, then air into Riyadh. 21 RMB/kg, 16 days total.
Sea-air is just buying time with money. Full air is fast and expensive, full ocean is cheap and slow, and the middle lane runs 18 to 22 days at roughly 40% less than air. When peak capacity tightens, it is often the only space you can still book.
The traps live right there.
Invoices come first. Sea-air crosses customs twice, Dubai and then Saudi Arabia. If the commercial invoice going into Dubai does not match the one filed in Riyadh, Saudi customs reads it as under-declaration. My rule: same invoice, same HS code, same declared value on both legs. Change nothing.
Transit time is second. Do not believe the "16 days guaranteed" line. At Jebel Ali, waiting 3 to 5 days for a berth in September is normal, plus 2 to 3 more in the transit warehouse. Quote your buyer 25 days and you look good when it lands early.
Cargo type is third. Batteries, liquids and cosmetics need fresh screening before the air leg, and Saber certificates have to be re-linked to the new entry. Plain general cargo moves cleanest. Half the work at 8ship's Jebel Ali transit desk is cleaning up exactly this mess.
Lock space before October. From late September into mid-October, the Jebel Ali to Riyadh leg is effectively full. So are you routing sea-air this year, or just pushing inventory into a Saudi warehouse back in August?