Ocean transit from Asia to the United States runs roughly two to three weeks to the West Coast on direct services from the main North Asian origins, and commonly four to six weeks or more to the East Coast via the Panama Canal. The exact figure depends on the origin, the coast, and whether the routing is direct or connected, and door-to-door adds inland time at both ends. India is the exception that proves the pattern, since its fast route runs westward to the East Coast rather than across the Pacific. Atlantic Pacific Lines, an FMC-licensed NVOCC, commits to guaranteed vessel space allocation across these lanes so cargo holds its sailings and its schedule, through tight weeks.
Transit time is the first question every importer asks about an Asian lane, and the honest answer is that there is no single number, only a set of numbers that depend on where the cargo starts, which United States coast it is bound for, and whether it sails direct or connects through a hub. This guide sets out the verified transit ranges for the major Asian origins, explains why the coasts differ by weeks rather than days, covers the gap between port-to-port and door-to-door time, and shows why the published transit is a best case to plan around rather than a promise. Every figure here is the healthy-conditions range, with the longer end the one to plan against.
Asia to United States transit times at a glance
The table below gives the port-to-port ocean transit ranges for the major Asian origins to each United States coast, on direct services in healthy conditions. Read them as planning baselines, not guarantees, because events that lengthen transit, congestion, blank sailings, equipment shortages, and canal conditions all push the real number toward the higher end.
| Origin | To the US West Coast | To the US East Coast |
|---|---|---|
| China | Roughly 14 to 21 days on direct services | Commonly about 28 to 40 days or more via the Panama Canal |
| Taiwan | Roughly 14 to 20 days on direct services | Commonly around five to six weeks or more |
| South Korea (Busan) | Roughly 12 to 18 days on direct services | Commonly around 28 to 38 days or more |
| Japan (Kanto ports) | Roughly 12 to 18 days on direct services | Commonly around 28 to 38 days or more |
| Vietnam and Southeast Asia | Around three weeks direct from Cai Mep; connected routings add a feeder and hub leg | Longer than the West Coast, with the connection deciding how much |
| India | Around eight to nine weeks, largely over Southeast Asian hubs (a specialist route) | Usually 40 to 45 days on direct services via the Suez Canal (the primary artery) |
Two patterns stand out immediately. The North Asian origins- China, Taiwan, South Korea, and Japan- all reach the West Coast in roughly two to three weeks because the Pacific crossing from North Asia is short, and all reach the East Coast in a month or more because that routing adds the length of the Pacific, the Panama Canal, and the run up the Atlantic seaboard. India breaks the pattern because it sits on the other side of Asia: its fast, high-frequency route runs westward through the Suez Canal to the East Coast in 40 to 45 days, while reaching the United States West Coast from India means a long eastward haul, largely over Southeast Asian hubs, of eight to nine weeks. The lesson is that the fast coast depends on which side of the world the cargo starts.
Why the two coasts differ by weeks, not days
The gap between the coasts is the single biggest driver of Asian transit time, and it is a matter of distance and routing rather than service quality. For the Pacific origins, the West Coast is the natural first landfall: the shortest ocean distance, the deepest choice of direct services, and the highest sailing frequency, which is why the great majority of transpacific loops call there. Reaching the East Coast from the same origins means either transiting the Panama Canal or routing the long way around, and either path adds thousands of miles and a week or more of sailing, plus the variable of canal conditions, which have tightened at times and can lengthen schedules when they do.
The trade-off is not simply speed, though, which is why the coast choice is a planning decision rather than a race. West Coast arrival is faster to the port but often requires a transcontinental rail or truck move to reach eastern and central markets, and that inland leg can give back the ocean-time advantage while adding cost and handling. East Coast arrival is slower on the water but lands the cargo closer to eastern destinations with no inland leg. The full comparison, including the rail landbridge option, is set out in our guide to choosing between the US East Coast and West Coast for China cargo, and the same logic applies across the Pacific origins.
Direct versus connected: the hidden weeks
Not all Asian cargo sails direct, and whether it does is the second big driver of transit time. The major North Asian ports, and the deep-water complex at Cai Mep in Vietnam, host direct transpacific services that cross without an intermediate stop. Much of the rest of Southeast Asia, and a share of cargo from every origin, moves on connected routings: a feeder vessel to a regional transhipment hub, then a wait for a deep-sea connection, then the ocean crossing. Each connection adds the feeder time and the hub dwell, and it adds risk, because a missed connection at the hub rolls the cargo to the next sailing. The structure of connected shipping, and why it needs committed space on the connecting leg, is covered in our guide to guaranteed vessel space from Vietnam and Southeast Asia. For planning, the rule is simple: a direct service transit is the baseline, and every connection in the routing adds days and uncertainty on top of it.
Port to port is not door to door
The single most common transit-time mistake is treating the ocean figure as the whole journey. The ranges in the table are port-to-port, the vessel leg alone. Door-to-door adds several things at each end: origin cartage and export clearance in Asia, any time the container waits for its booked sailing, customs clearance in the United States, and the final inland move to the delivery point. Added up, door-to-door commonly runs a week to two longer than the ocean figure at each end, so a China West Coast shipment that sails in 16 days can easily be a 30-to-40-day journey from factory to final door, and an East Coast shipment proportionally longer.
Less-than-container-load cargo adds more still, typically several days, because it must be consolidated at origin and deconsolidated at destination before and after the ocean leg. And the arrival side has its own delays that do not show in any transit table, above all the terminal and equipment time that generates demurrage and detention when a container cannot be collected promptly. Planning to the ocean number alone is how importers end up explaining a delay that was, in truth, entirely predictable.
Why the published transit is a best case, not a promise
Every number in this guide is a healthy-conditions figure, and the honest way to use it is as the best case around which to build buffer. Real lanes are lengthened by events that arrive on their own schedule: port congestion at either end, blank sailings that remove a week of capacity and bunch cargo onto later vessels, equipment shortages that delay loading, customs holds, and, on the East Coast routings, Panama Canal conditions. In a peak season, these compound, and the cargo most exposed is the cargo that did not secure its space, because an oversubscribed sailing rolls uncommitted bookings first, turning a published three-week transit into a five-week reality through no change in the schedule itself.
This is where transit planning and capacity planning meet. A committed booking does not make the ocean faster, but it protects the transit a shipper planned, because committed cargo holds its sailing when space is short rather than rolling to a later one. Atlantic Pacific Lines books against direct service contracts with major ocean carriers and commits space across these Asian lanes, with the equipment planned into the commitment, so the transit a customer plans is the transit the cargo is far more likely to get. The seasonal version of this dynamic, and why committed cargo holds through the peak, is covered in our guide to guaranteed vessel space from China to the United States in peak season.
How to plan against real transit times
A short set of habits turns transit ranges into reliable delivery dates.
- Plan against the longer end of the range, treating the published transit as a best case and adding buffer for congestion, peak periods, and canal conditions.
- Choose the coast by delivered time and cost to the final door, counting the inland leg fully rather than comparing ocean transit alone.
- Add the connection time for any connected routing, and the consolidation time for less-than-container-load cargo, on top of the direct baseline.
- Work backward from the required arrival through door-to-door time, remembering that origin cartage, clearance, and final delivery sit outside the ocean figure.
- Secure committed space ahead of the peak, since the surest way to protect a planned transit is to hold the sailing rather than risk a roll.
Importers who plan this way hit their dates because they planned the journey that actually happens rather than the one on the schedule. It is the basis on which Atlantic Pacific Lines structures committed allocation across the Asian lanes, matched to each shipper's origins, coasts, and calendars.
