Sea vs. Air Freight: When to Choose Which

A simple decision framework for shippers weighing cost, transit time, cargo value and inventory risk.

Air freight is roughly 5–8× more expensive per kilogram than sea, but 4–6× faster. That trade-off is easy to model: if the value of holding inventory longer (cash tied up, lost sales, seasonality) is higher than the freight delta, fly it.

A good rule of thumb we share with customers: if your cargo is worth more than $15/kg, or has less than 30 days of shelf/sales window, air is usually the right call. Everything else moves better by sea.

Hybrid strategies work too — air-freight the first batch to hit a launch date, then top up by sea for the ongoing run. Shipboxy books both under one reference so the paperwork stays clean.