Houston to Busan shipping route.

Ships leaving Houston for Busan head north west and cover a sea distance of 9,737 nautical miles (18,034 km), via Panama Canal. The straight line between the ports is 11,440 km; coastlines and shipping lanes add the rest. On the way the vessel passes Panama Canal, so canal transit fees and waiting time at the canal are part of every voyage.

Shipping time depends on speed. At 14 knots, a common container ship service speed, the passage takes 29.0 days at sea. Slow steaming at 12 knots stretches it to 33.8 days, while 18 knots brings it down to 22.5. Container transit time on a liner service is longer than the steaming time: ships call at other ports on the rotation, and cargo may transship at a hub. Add terminal time at Houston and Busan to plan the full ocean transit time.

The next option is via Suez Canal, 14,296 nautical miles, 4,559 nm longer than the main route. Carriers pick it when Suez Canal is congested or closed.

352 nm of the route, 4% of it, lies inside North American ECA. In an emission control area ships must burn fuel with no more than 0.1% sulphur or clean the exhaust with scrubbers. That fuel costs more, and carriers add it to the ocean freight bill as a low sulphur or ECA surcharge.

Container freight rates on Houston to Busan move with fuel prices, ship capacity and the season. Compare several carriers before booking: the cheapest sailing is often the slowest one. At Busan (KRPUS) carriers give about 10 free days before demurrage and detention charges start, so plan the truck or rail pickup before the box lands.

Of the 65 port to port routes from Houston in this directory, Busan is the 45th shortest. Closer destinations include Melbourne (9,695 nm), Jebel Ali (9,663 nm) and Karachi (9,589 nm).