L'affidabilità di i calendarii tocca novi minimi: ciò chì significa per e vostre date di consegna
If your containers have been arriving later than the carrier originally promised, you are not imagining things. Global ocean carrier schedule reliability slid to some of its weakest readings of the year in 2026, and for importers, exporters, and freight buyers, that single statistic quietly reshapes everything from purchase order timing to warehouse staffing. A number that once lived in the back pages of industry newsletters is now a front-line planning input.
This article breaks down what schedule reliability actually measures, why it has been falling even as freight rates and capacity swing wildly, which trade lanes and carriers are struggling most, and — most importantly — what shippers can do about it. Along the way we will look at how a logistics partner with strong first-leg control, like Topway Shipping, can absorb some of that volatility before it ever reaches your delivery date.
What “Schedule Reliability” Actually Measures
Schedule reliability, as tracked by research firms such as Sea-Intelligence, is the percentage of vessel arrivals that occur within a defined window of the date originally published in the carrier’s sailing schedule. It is not a measure of transit speed, and it is not the same as an on-time departure rate. A vessel can leave port exactly on schedule and still miss its reliability window if it is delayed at a transshipment hub, held up by weather, or forced to skip a call because of port congestion further down the string.
For a freight buyer, the metric matters because it is the closest thing the industry has to a predictability score. A trade lane with 80 percent reliability behaves very differently from one sitting at 55 percent, even if the average transit time on paper looks identical. The lower the reliability figure, the wider the range of outcomes you should plan for, and the more buffer you need to build into your supply chain.
2026 in Numbers: A Year of Sliding Reliability
Global schedule reliability opened 2026 at a relatively strong 62.4 percent in January, itself a multi-year high for that month, before drifting downward through the first half of the year. February dipped to 59.0 percent, March and April recovered slightly into the low 60s, and by July the figure had fallen sharply to 56.4 percent — the lowest monthly reading of the year and the weakest performance since February 2025. Average delays for late arrivals climbed alongside the falling reliability score, reaching just over six days in July, the highest average delay recorded since January 2024.
The table below summarizes the monthly trend reported through the first seven months of 2026.
| Mese (2026) | Affidabilità di u calendariu globale | M/M Change | Avg. Delay (Late Arrivals) |
| Ghjinnaghju | 62.4% | - 0.4 punti | ghjorni 5.17 |
| Febbraiu | 59.0% | - 3.4 punti | ghjorni 5.24 |
| Marzu | 62.6% | + 3.6 punti | ghjorni 5.48 |
| Aprile | 62.4% | - 0.2 punti | ghjorni 5.55 |
| Maghju | Highest of 2026 | Improved M/M | ghjorni 5.65 |
| Ghjugnu | 62.6% | - 1.9 punti | ghjorni 5.31 |
| Lugliu | 56.4% | - 6.1 punti | ghjorni 6.06 |
The pattern is not a straight line down. Reliability actually improved in some months, which is part of what makes planning so difficult: shippers cannot simply assume a steady, predictable decline and adjust once. Instead, the market has become genuinely more volatile month to month, and that volatility itself is now arguably a bigger planning problem than the average reliability level.
Why Schedule Reliability Keeps Slipping
Several forces are colliding at once. Port congestion in China has been a recurring theme through the summer of 2026, with a series of typhoons disrupting operations and vessel schedules along the east coast, pushing carriers into prolonged waits at hubs such as Shanghai and Ningbo. When a major origin port backs up, the delay does not stay contained to that port — it ripples forward through every downstream call on that vessel’s rotation.
Alliance restructuring has also played a role. New alliance formations reshuffled vessel-sharing agreements and port rotations, and services built around unfamiliar partner combinations tend to take time to stabilize. Sea-Intelligence’s own analysis has pointed to a rise in what it calls service instability — weekly sailings that are either cancelled outright or delayed so severely that they effectively slide into the following week, leaving shippers with no sailing at all in the week they expected one.
Add to that the continuing diversion of much of the East-West trade away from the Suez Canal and around the Cape of Good Hope, occasional partial restorations of Suez transits by individual carriers, blank sailings used to manage capacity against soft freight rates, and the ordinary friction of peak-season demand, and it becomes clear why no single fix is on the horizon. Reliability is being squeezed from several directions simultaneously.
Peak Season 2026: What Shippers Should Expect Through Year-End
Reliability figures rarely move in isolation from the broader shipping calendar, and 2026 is unlikely to be an exception. Peak season volumes moving out of China ahead of year-end retail demand typically put extra strain on an already stretched network, and when that seasonal surge lands on top of the port congestion and typhoon disruption already seen through the summer, the combination tends to compound rather than simply add up. Carriers respond to peak demand with extra loaders and adjusted blank-sailing schedules, but those adjustments themselves introduce short-term unpredictability even when they succeed in adding capacity.
Shippers who have been through a volatile peak season before tend to build in decision points rather than a single fixed plan: a point in the booking cycle where, if reliability on their preferred lane has clearly deteriorated, they are ready to shift volume to a more stable carrier or bring forward a shipment rather than waiting and hoping the schedule holds. That kind of contingency planning is far easier to execute with a forwarder that is already tracking carrier performance on a rolling basis, rather than one that only reacts once a shipment is already late.
Not All Carriers Are Struggling Equally
One of the more striking features of the 2026 data is how wide the gap has grown between the best and worst performers. In July, Maersk led the top 13 carriers with 73.7 percent reliability, the only carrier above 70 percent, followed by Hapag-Lloyd at 69.3 percent. Several other major names sat in the 50 to 60 percent band, and the least reliable carrier in the ranking finished well below that. Earlier in the year, the Gemini Cooperation network built around Maersk and Hapag-Lloyd posted reliability scores in the high 80s and even touched 91 percent on trade-region arrivals in some months, far outpacing every other alliance.
| Carrier | July 2026 Reliability | Rank vs. Top 13 |
| Maersk | 73.7% | 1st |
| Hapag-Lloyd | 69.3% | 2nd |
| Trapani | Gamma 50-60%. | Metà tavula |
| CMA CGM | Gamma 50-60%. | Metà tavula |
| Wan Hai | Lowest of top 13 | 13th |
What this means practically is that the carrier you book with, and the specific service loop within that carrier’s network, now matters more than it used to. Two shipments leaving the same Chinese port in the same week, on different carriers, can arrive with a gap of a week or more purely because of the underlying network’s reliability profile. Freight forwarders who track this data lane by lane and carrier by carrier are in a materially better position to set realistic delivery expectations than those relying on a generic transit-time chart.
It is worth adding that reliability rankings are not fixed. A carrier sitting near the bottom of the table in one month can climb several places the next, particularly after resolving a specific operational issue such as a vessel deployment change or a port-call adjustment. That fluidity is another reason static assumptions about “our carrier is always reliable” or “that carrier is always late” tend to age poorly, and why ongoing monitoring, rather than a one-time carrier selection decision, is what actually protects a delivery date over the course of a year.
Trade Lanes Under the Most Pressure
Reliability is not uniform across trade lanes either, and the divergence has become more pronounced. Sea-Intelligence’s lane-level analysis found that Asia-Mediterranean has matured into a comparatively stable, high-reliability corridor, with a growing share of services classified as consistently punctual and low-volatility. Asia-North Europe, by contrast, has swung in the opposite direction: a lane that once had a strong share of highly reliable services saw that share shrink sharply within about six months, with the bulk of capacity settling into an unpredictable middle ground rather than either extreme.
For the China-U.S. trade specifically, the combination of Chinese port congestion, blank sailings tied to soft demand periods, and peak-season volume surges has produced a lane where average reliability tracks close to the global figure, but with sharper swings around major disruption events such as typhoon season on the Chinese coast. This is precisely the lane where a forwarder with strong first-leg visibility and flexible routing options adds the most value, because it is where the gap between the best-case and worst-case outcome is widest.
West Coast and East Coast U.S. gateways have also behaved differently within this lane. West Coast ports, closer to Asia and served by more direct strings, have generally been quicker to recover from a disruption once it clears a given origin port, while East Coast and Gulf routings, which often depend on transshipment or longer all-water strings, tend to carry any delay further down the chain before it shows up at the final port of discharge. Shippers moving time-sensitive cargo sometimes find it worth paying a modest premium for a more direct West Coast routing specifically to reduce the number of points in the journey where a delay can be introduced.
What Falling Reliability Costs Importers
The financial and operational costs of unreliable schedules rarely show up as a single line item, which is part of why they are easy to underestimate. A shipment that arrives a week later than planned can mean a retailer missing a promotional window, a manufacturer idling a production line waiting for components, or a seasonal product landing after its selling season has effectively closed. Warehouse labor gets scheduled around expected arrivals, and when those arrivals slip, either staff sit idle or a sudden cluster of late shipments creates a receiving bottleneck.
There is also a quieter cost in inventory strategy. Many importers have responded to falling reliability simply by holding more safety stock, which ties up working capital and warehouse space that could otherwise be put to better use. Others have shifted toward expedited air or premium ocean options for time-sensitive cargo, accepting a higher freight cost to protect a delivery date. Both responses are rational given the current environment, but both are also more expensive than a supply chain built around genuinely predictable transit times.
None of this is meant to suggest that ocean freight has become unusable — it remains, by a wide margin, the most cost-effective way to move containerized cargo across the Pacific. The point is that the margin for error has narrowed, and shippers who plan as if reliability were still in the 75 to 80 percent range common a few years ago are setting themselves up for repeated surprises.
It is also worth noting that the cost of unreliability is rarely distributed evenly across a business. A single missed delivery date on a routine reorder might be a minor inconvenience, absorbed quietly by existing stock. The same delay on a new product launch, a contractual retail delivery window, or a holiday-dependent seasonal item can cascade into lost sales, chargebacks from retail partners, or emergency trasportu aereu bills that erase the margin the shipment was supposed to protect. Understanding which SKUs and which shipments actually carry that kind of downside risk is a useful exercise on its own, separate from any change in carrier reliability, because it tells a business where to spend its limited buffer-stock budget.
How Experienced Shippers Are Adapting
The most effective adjustments tend to be structural rather than one-off. Building longer, more realistic lead times into purchase orders is the simplest step, and it costs nothing beyond the discipline to actually do it rather than defaulting to pre-disruption assumptions. Diversifying across more than one carrier or alliance for a given trade lane also spreads risk, since, as the data above shows, reliability performance can differ by twenty percentage points or more between networks operating the same route.
Working with a forwarder that tracks carrier and lane-level reliability data, rather than quoting a single generic transit time, gives shippers a much clearer picture of what to actually expect. It is also worth reconsidering where inventory risk sits in the supply chain: pushing some buffer stock into an overseas or U.S.-based warehouse close to the point of sale can decouple your customer-facing delivery promise from the variability of any single ocean voyage, even if the underlying vessel schedule is still unpredictable.
Finally, communication matters more than it used to. A forwarder that proactively flags a delay the moment a vessel misses a port call, rather than waiting for the customer to ask, allows a business to adjust downstream commitments before the delay becomes a crisis rather than after.
Some importers have also begun treating customs clearance as part of the reliability equation rather than a separate step that only starts once cargo arrives. A shipment that clears an ocean voyage on time but then sits waiting on documentation or a customs query loses the benefit of that punctual sailing. Pairing carrier selection with a customs process that is already prepared — accurate documentation filed in advance, classification questions resolved before arrival — closes one of the more avoidable gaps between a vessel’s arrival date and a cargo’s actual availability date.
How Topway Shipping Helps You Stay on Schedule Despite Industry Volatility
Since 2010, Topway Shipping has been headquartered in Shenzhen, China, building cross-border e-commerce logistics solutions with a founding team bringing more than 15 years of international logistics and customs clearance experience, and a particular depth of expertise on the China-U.S. corridor discussed throughout this article. That focus matters directly here: a forwarder that lives inside one trade lane day after day develops a working sense of which carriers, ports, and service loops are holding up under pressure and which are not, well before the next monthly reliability report is published.
Topway’s service line covers the full logistics chain rather than a single leg of it — first-leg transportation from the factory or supplier, overseas magazzinu, customs clearance on both ends, and last-mile delivery to the final destination. Because Topway also arranges flexible full-container-load and less-than-container-load ocean freight from China to major ports around the world, shipments can be routed around a specific carrier’s weak spot on a given lane rather than being locked into a single booking regardless of how that service is performing that month.
For businesses that have felt the sting of a schedule that quietly slipped from the promised date, that end-to-end visibility, combined with overseas warehousing that can buffer against ocean-side volatility, is often the difference between a delay that stays invisible to the end customer and one that does not.
This also extends to how bookings are structured in the first place. Because Topway works across both FCL and LCL options, smaller shippers are not forced to choose between waiting to fill a full container, which can add days or weeks to a shipment’s origin timeline, and paying a premium for space on a less reliable service. Matching shipment size and urgency to the right freight mode, on a lane and carrier that is actually performing well that month, is a quieter but equally important part of protecting a delivery date than any single warehousing or customs improvement on its own.
cunchiusioni
Global ocean schedule reliability spent much of 2026 oscillating in a range that would have been considered unacceptably low just a few years ago, dipping as far as 56.4 percent in July before any sign of a durable recovery. Behind that headline number sits a market fractured by carrier, by alliance, and by trade lane, where the difference between booking with the most reliable network and the least reliable one can mean a week or more of unplanned delay.
That volatility is unlikely to disappear on its own, which makes the shipper’s own planning discipline, carrier selection, and choice of logistics partner more consequential than they were in calmer years. Working with a forwarder that understands the current reliability landscape lane by lane, and that can flex routing and warehousing around it, remains one of the most practical levers available for keeping delivery dates believable in an unpredictable year.
S & P
Q: What counts as a good schedule reliability score in 2026?
A: Anything above roughly 70 percent is currently considered strong, since the global average has spent most of 2026 in the high 50s to low 60s. A handful of top networks, notably Gemini Cooperation, have posted scores in the high 80s to low 90s on some routes, but that level remains the exception rather than the norm across the industry.
Q: Why do two shipments on the same route sometimes arrive with very different delays?
A: Reliability varies significantly by carrier, alliance, and specific service loop, not just by trade lane. Two containers leaving the same origin port in the same week can end up on vessels with very different on-time performance, which is why the carrier and service selected for a booking matters as much as the route itself.
Q: How can a freight forwarder improve delivery predictability if carrier schedules themselves are unreliable?
A: A forwarder can build in buffer through overseas warehousing, choose among multiple carriers or service loops for a given lane, and communicate delays as soon as they are detected rather than after the fact. These steps do not change a carrier’s underlying reliability, but they reduce how much of that unpredictability reaches the end customer.
Q: Does Topway Shipping only handle ocean freight?
A: No. Topway Shipping covers the full logistics chain, including first-leg transportation, overseas warehousing, customs clearance, and last-mile delivery, in addition to flexible full-container-load and less-than-container-load ocean freight services from China to major ports worldwide.
Q: Should I switch carriers if my current one has low reliability?
A: Not necessarily on its own, since price, capacity, and routing options all matter alongside reliability. It is more useful to review reliability data alongside those factors for your specific lane and season, ideally with a forwarder that can compare options across multiple carriers rather than being tied to just one.
