Seattle to Laem Chabang shipping route.
7,221 nautical miles direct, about 21.5 days of steaming at 14 knots.
Sea Distance Between Ports: Seattle and Laem Chabang
Port to Port Distance on the map, along real shipping lanes.
Shipping time from Seattle to Laem Chabang
| Route | Distance | 12 kn | 14 kn | 18 kn |
|---|---|---|---|---|
| direct (shortest) | 7,221 nm | 25.1 d | 21.5 d | 16.7 d |
Sea Route Distance Calculator
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Reverse: Laem Chabang to SeattleShip Seattle to Laem Chabang with Navo
Live numbers for this lane from Navo apps, updated 2026-10-31.
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About the Seattle to Laem Chabang shipping route
Seattle to Laem Chabang is a 7,221 nautical mile shipping route on a direct course, heading north west from the United States to Thailand. That is 13,373 km of water against 12,026 km as the crow flies. No canals or major straits on this leg, the ship stays close to the direct line.
Shipping time depends on speed. At 14 knots, a common container ship service speed, the passage takes 21.5 days at sea. Slow steaming at 12 knots stretches it to 25.1 days, while 18 knots brings it down to 16.7. Liner schedules on the lane quote 28 days port to port, because the services call at other ports and some transship. Over the last 30 days we counted 2 sailings by 1 carrier (CMA CGM).
548 nm of the route, 8% 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.
Recent freight rates for USSEA to THLCH start at $6,990 for a 20GP and $9,700 for a 40GP. These are spot market prices from carriers that sail the lane; your quote will also include terminal handling, documentation and any bunker surcharge. At Laem Chabang (THLCH) carriers give about 5 free days before demurrage and detention charges start, so plan the truck or rail pickup before the box lands.
Of the 64 port to port routes from Seattle in this directory, Laem Chabang is the 29th shortest. Closer destinations include Singapore (7,171 nm), Sydney (6,897 nm) and Ho Chi Minh City (6,683 nm).
FAQ
How many nautical miles from Seattle to Laem Chabang?
The port to port distance from Seattle to Laem Chabang is 7,221 nautical miles (13,373 km), direct.
What is the shipping time from Seattle to Laem Chabang?
About 21.5 days at 14 knots and 16.7 days at 18 knots of steaming, without port calls. Scheduled liner services on this lane quote 28 to 28 days.
What are freight rates from Seattle to Laem Chabang?
Recent spot rates for USSEA to THLCH start at $6,990 per 20GP and $9,700 per 40GP, before local charges. Rates change weekly.
How much of the route is in an emission control area?
548 nm sit inside ECA waters (North American ECA), where ships burn 0.1% sulphur fuel.
Is the return route the same?
The reverse route Laem Chabang to Seattle has its own page with the same distance and route.
More port to port distance
Seattle to
Oakland879 nm
Seattle to
Los Angeles1,214 nm
Seattle to
Manzanillo2,498 nm
Seattle to
Balboa4,188 nm
Seattle to
Yokohama4,300 nm
Seattle to
Tokyo4,311 nm
Ho Chi Minh City to
Laem Chabang602 nm
Singapore to
Laem Chabang803 nm
Port Klang to
Laem Chabang1,082 nm
Tanjung Priok to
Laem Chabang1,266 nm
Haiphong to
Laem Chabang1,319 nm
Hong Kong to
Laem Chabang1,439 nm
How we count: sea routes follow shipping lanes and canals, time is pure steaming at 14 knots without port calls. Engine navo-distance-time 0.3.0. See all sea distance between ports or the Shipping Routes Directory.