← Back to Supply Chain Review Freight & Logistics

Eastar Jet Adds Its 11th Cargo Route: Manado-Incheon Belly Freight Feeds Osaka

Source: The Asia Business Daily · 2026-10-16 · 15 min read
中文

Supply Chain Action Points

Read this first — the conclusion, and the moves to make:

  1. Get four numbers in writing before booking: Manado arrival time at Incheon, minimum connecting time, departure time of the Osaka second leg, and the cool-room duration and rate you can actually book at Incheon.
  2. Divide your weekly volume by the lane's estimated belly capacity and keep your share under 30 per cent; above that, secure a second carrier or freighter space before December load factors lift.
  3. Rerun the connection arithmetic against the winter timetable as soon as it lands in late October, and finish it before mid-November so your first-quarter contract is signed against real times.
  4. Set the cold-chain trigger: the moment the published Incheon connection exceeds your booked cool-room time, or total chilled time passes four days, pull the cargo off this lane regardless of the rate.
  5. Write the interline liability split into the contract: who pays for a late first leg, who pays for an offloaded second leg, and who produces the temperature and handling record for the time in between.
  6. Do not build a customer promise measured in hours on a single passenger rotation; keep a freighter route through Jakarta or Singapore as the backup for the volume that no longer fits the belly.
Skip to the detailed analysis ↓
Summary

Eastar Jet said on 15 October that belly-hold freight started on its Manado-Incheon passenger service from 14 October, taking the carrier to 11 cargo routes. Tuna flies to Incheon and transfers onto Incheon-Osaka flights, joining transhipment flows that move pharmaceuticals on Tokyo-Incheon-Zhengzhou and industrial materials on Tokyo-Incheon-Yantai. On lanes it does not fly it interlines, connecting Taipei-Incheon with another airline's Incheon-Americas flights, and Xiamen is due before year end.

The Analysis

Manado to Incheon is a passenger route. On 14 October it started carrying cargo in the belly, and Eastar Jet counted it as its eleventh cargo route. I have moved fish on lanes like this one, and the thing to grasp from the first sentence is that the fish is a guest. The aircraft flies because people want to go to Manado, not because tuna wants to go to Osaka. Everything that follows grows out of that single fact.

The lane works like a ferry crossing. Indonesian tuna rides the belly from Manado to Incheon, changes aircraft, and goes on to Osaka on an Incheon to Japan service. The same carrier is running other triangles through the same crossing: pharmaceuticals on Tokyo to Incheon to Zhengzhou, industrial materials on Tokyo to Incheon to Yantai. Where it does not fly itself it interlines, joining Taipei to Incheon with another airline's Incheon to Americas departures for e-commerce cargo. A Xiamen service is promised before the year is out.

Eleven routes is a good number for a balance sheet. What decides whether your cargo arrives is the crossing, and a crossing is only ever as good as the next departure.

Put the facts out first. Eastar Jet said on 15 October that belly-hold freight began on its Manado to Incheon passenger service from 14 October, taking it to eleven cargo routes. The main cargo is Indonesian tuna, flown to Incheon and transferred onto Incheon to Osaka flights into Japan. The carrier is also building transfer flows through the same point: pharmaceuticals on Tokyo to Incheon to Zhengzhou, industrial materials on Tokyo to Incheon to Yantai. On lanes it does not fly itself it interlines, connecting Taipei to Incheon with another airline's Incheon to Americas services for e-commerce cargo. Xiamen is due before the end of the year.

Now what is missing. No frequency for Manado. No aircraft type. No figure for how much belly space is left over after passengers and bags. No minimum connecting time at Incheon. No description of how the cold chain is handed over. No name for the interline partner. No cut-off time on the second leg. Eleven is a count of routes, and a count of routes cannot tell you what time any single box arrives.

Why now, and who is pushing. A passenger service opens and the belly is free marginal revenue: every kilo carried is a kilo that was going to fly anyway, so the airline has no reason to say no. On the cargo side, chilled fish moving from eastern Indonesia into the Japanese market has been growing, and Osaka's unloading and auction rhythm is set by the clock in the early morning. There is a seasonal push too. The fourth quarter tightens intra-Asia space because of year-end e-commerce and restocking, main-deck widebody capacity gets expensive, and belly space becomes the cheap substitute. Opening or densifying in October is the normal move for that season.

Look at the shape of it on a map and the reason for the triangle is obvious. Manado sits at the northern tip of Sulawesi, a long way from anything, and Japan sits a long way further north. If a direct cargo service out of Manado into Japan existed at a price anybody could live with, nobody would route fish through Korea to get there. The triangle exists because the direct option is either missing or too expensive, and because a passenger service happens to point roughly the right way. That is a perfectly good reason to build a lane. It is also the reason the lane inherits every weakness of the passenger business that carries it, including the fact that its timetable is designed around check-in desks and holiday bookings rather than around an auction that starts at five in the morning in Osaka.

The e-commerce end deserves its own paragraph, because it is where the money in this network is probably going. Taipei to Incheon on this carrier's own aircraft, then a handover to another airline's Incheon to Americas departure, is a route built out of two timetables that were never designed for each other. What governs it is not the rate, it is the minimum connecting time at Incheon and the second carrier's cut-off, and those two numbers decide whether your parcel makes the flight it was sold on. An e-commerce seller promising a delivery window in days is buying a promise that depends on the least controllable hour in the whole journey, which is the hour the box spends on the floor at Incheon waiting for somebody else's aeroplane.

So where does this line clog. Not at Manado. Manado only has to pack the fish and get it to the aircraft, which is troublesome but simple. The whole problem sits at the Incheon crossing, and it has three parts: how much belly space is actually left, whether there is a cool room with your name on it, and when the second leg departs. If any one of the three collapses, the lane stops meaning anything to a shipper. Only the first of them is nominally in the airline's hands. The other two depend on ground resources at the transfer airport and on somebody else's timetable.

And here is the part the headline left out. Belly space is a residual, not capacity. The aircraft is loaded with passengers first, then bags, and cargo gets whatever is left. That ordering means the moment passenger load factor rises, your fish is the first thing asked to step off. Manado is a leisure route. Load factors lift around the year-end holidays, the winter school break and the travel season around Chinese New Year, bags multiply, and the leftover shrinks. You have a booking, you say. A belly booking is soft in the face of load factor, and when something has to be offloaded, the compensation queue puts passengers ahead of you. There is a harder layer under that. This triangle exists because passenger demand exists, not because cargo demand exists. It is a passenger route wearing a cargo hat, and when a passenger route is cancelled nobody issues a press release. Shippers usually find out on the day their cargo stops moving.

Who gets what out of it. Seafood exporters in eastern Indonesia get a new path into Japan with one less handover than routing through Jakarta or Singapore. Importers in Osaka get another source direction, at the cost of having their delivery clock rewritten by the timetable at Incheon. Pharmaceutical shippers on Tokyo to Incheon to Zhengzhou get a cheaper second leg and pay for it with an extra handover and an extra temperature risk. Industrial materials on Tokyo to Incheon to Yantai are the natural fit: low value, loose timing, and belly space is cheap precisely because it is somebody else's leftovers. E-commerce sellers in Taipei moving to the Americas get another routing option and pay for it by splitting liability in two. Who loses? Anybody who was relying on direct Tokyo to Zhengzhou or Taipei to Americas capacity, because once belly transhipment prices appear, direct capacity has to shade its price to compete, which also tells you the belly advantage will not stay exclusive for long.

How fast does this reach your cost line. Belly capacity is not like freighter capacity: it needs no build-up time. The passenger flight started on 14 October and the space was on sale the same day, with none of the four to eight week lag you see when a freighter lane opens. That is the good half. The bad half is that it lives and dies with the passenger schedule. The real cliff is the winter schedule change in late October. Whether Manado survives it, and whether the arrival time moves forward or back, decides whether the Incheon to Osaka connection still closes. You should have the answer by mid-November, and you only need to watch one number to get it: if the arrival time at Incheon slips two hours, the connection may be gone.

What would turn the conclusion over. Manado gets cut in the schedule change and the belly lane disappears quietly, without an announcement anyone reads. The minimum connecting time at Incheon runs longer than the cool-room slot you can book, and chilled cargo arrives as second-grade chilled. The interline partner's flight to the Americas rolls and your e-commerce delivery promise breaks before the freight does. And on the other side of the ledger, if Xiamen really does open before the year is out, the network gains a Fujian point alongside Zhengzhou and Yantai, and cargo out of southern Fujian gets a new way into Japan and onward to the Americas. At that moment the binding constraint stops being route count and becomes the transfer shed and the transit window at Incheon, which is where it was always going to end up.

Let me do the arithmetic, with the assumptions written down so you can substitute your own contract prices. Assume a processor in Manado ships four tonnes of chilled tuna a week to Osaka, fifty-two weeks a year, two hundred and eight tonnes. Assume the Manado to Incheon service runs three times a week, which the announcement does not state and you will have to confirm against the timetable. Assume a single-aisle aircraft, and assume the belly left over after passengers and bags is somewhere between one and three tonnes a flight, so take two tonnes. On those assumptions the lane has about six tonnes a week of belly capacity.

Now look at what that means. Your four tonnes is two thirds of the entire lane's belly. You are not a customer of this lane, you are the lane. One holiday week of higher load factor can take it back off you. That is why I would state the threshold plainly: if your regular weekly volume is more than about thirty per cent of the lane's estimated belly capacity, which is roughly 1.8 tonnes on these assumptions, do not build your business on a single passenger rotation. Get a second carrier, or get freighter space.

The pharmaceutical flow through the same crossing is worth a separate look, because it is the one that behaves differently from the fish. Tokyo to Incheon to Zhengzhou is not a perishable race against an auction clock, it is a validated chain that has to survive a handover. Every time a temperature-controlled box changes custody, the record changes hands with it, and the gap between one custodian's data logger and the next one's warehouse is exactly where a claim goes to die. Cargo like this can use a belly lane, but only if somebody can produce a continuous record across the transfer, and on a passenger rotation with a tight connection there is very little slack in which to produce one. If your forwarder cannot describe the handover at Incheon in detail, the cheaper second leg is not cheaper at all.

The money, then. Assume chilled air freight from Manado to Osaka via Incheon at two dollars eighty a kilo all in. Assume Osaka wholesale at eighteen dollars a kilo for chilled product. Assume the frozen alternative by sea at ninety cents a kilo with an eighteen-day transit, landing at eleven dollars a kilo. Per week by air: revenue of four thousand kilos at eighteen dollars is seventy-two thousand, freight at two eighty is eleven thousand two hundred, leaving sixty thousand eight hundred before the cost of the fish. Per week by sea: revenue of forty-four thousand, freight of three thousand six hundred, leaving forty thousand four hundred. Air is ahead by twenty thousand four hundred a week.

Now the risk side. Assume chilled tuna keeps twelve days of shelf life from harvest, assume this triangle eats two days, and you have ten selling days. Every connection that fails and costs you twenty-four hours takes a selling day off the end. In the worst case a whole consignment is downgraded: four tonnes moving from the chilled price to the frozen price costs twenty-eight thousand dollars, which wipes out about one and a half weeks of the premium. That sounds alarming until you scale it. If only thirty per cent of a week's consignment is affected, the loss is eight thousand four hundred and the twenty thousand four hundred premium still covers it comfortably. Even a one-in-four miss rate leaves the chilled case ahead.

Which tells you where the real constraint is. It is not the money, it is the continuity of the cold chain. Set the trigger that way: the moment the published connection at Incheon exceeds the cool-room time you have booked, or the moment total chilled time passes four days, the chilled premium collapses regardless of what you are paying per kilo. Put that into practice and it changes what you negotiate for. Do not spend your energy shaving twenty cents a kilo off the freight. Spend it on a booked cool-room position at Incheon and a handover procedure that produces a temperature record, because those are the two things on this lane that are actually scarce.

What should an importer or exporter do with it. Get four numbers out of your forwarder in writing: the Manado arrival time at Incheon, the minimum connecting time, the departure of the Osaka second leg, and the cool-room duration and rate you can actually book at Incheon. If any one of them is missing, this lane does not work for chilled cargo, and no discount changes that. Then divide your weekly volume by the lane's estimated belly capacity and look at the share. Above thirty per cent, go and find a second carrier or a freighter backup now, rather than in December when load factors are already lifting.

Then there is the schedule change. As soon as the winter timetable lands in late October, check two things: whether Manado kept its frequencies, and whether the arrival time moved. Rerun the connection arithmetic against the new times and finish the exercise before mid-November, because that is what your first-quarter contract should be signed against. If you are moving e-commerce cargo on the interline, add one more job. Write the split of liability into the contract: who pays when the first leg is late, who pays when the second leg offloads, and who produces the temperature and handling record for the time in between. An interline is a joined route, not a joined responsibility, and without that clause you will not know who to call on the day it goes wrong.

The alternatives, and the potholes on each. Changing the path is the most practical: Manado to Japan can also route through Jakarta or Singapore on a widebody freighter, which costs more but keeps the whole journey under one control, and that is the right answer for the slice of volume that no longer fits in the belly. Changing the mode is the second: run chilled by air and frozen by sea as two separate legs of the same business, using air to protect the chilled brand through the peak and sea to hold cost in the quiet months, rather than committing a year of volume to one mode. Changing the point is the third: once Xiamen opens, southern Fujian gets another way through Incheon, but compare it against direct capacity out of Xiamen before assuming that newer means cheaper.

Three potholes. The first is reading eleven routes as a guarantee of space. Route count is the width of a network; what you use is the belly of one flight, and wide is not the same as deep. The second is the cold-chain handover with no record: every transfer at Incheon breaks the temperature record once, and nobody's probe covers somebody else's warehouse, so when it goes wrong you are left arguing over a gap. The third is offload on the interline leg. When the second leg belongs to another airline, your cargo queues behind that airline's own customers.

So is this road worth walking. It is worth walking for cargo that is dense, high value, small in volume and tolerant of a handover, which is exactly what industrial materials, pharmaceuticals with proper packaging and modest parcels of chilled fish are. It is not worth walking as the backbone of a lane you have promised a customer in hours, and it is certainly not worth walking if your weekly volume is most of what the belly can carry. Strip it down and it is a road problem: a ferry crossing is only as good as the next boat, and the next boat here belongs to somebody whose passengers come first. Carry a spare tyre. Do not expect the driver to reroute for you.

↑ Back to the key points

— By Ömer Kaya

air cargobellyfreightnetworkasia