The booking was confirmed. The purchase order is due before Black Friday. Then the container rolls to the next sailing, and the question lands on your desk: do we fly it?

For many importers this fall, the honest answer is “some of it.” Ocean schedules are harder to rely on, but air freight isn’t cheap either. The smartest move is rarely to convert an entire shipment. It’s to find the cargo whose delay costs more than the air premium, and move only that. Here’s how to make that call.

Why Ocean Space Feels Tight This Q4, Even With Ships Available

The main problem this season isn’t a shortage of vessels. It’s reliability, and how much of the scheduled space you can actually use.

• Schedules are slipping. According to Sea-Intelligence, global schedule reliability fell 6.1 points to 56.4% in July 2026, the sharpest one-month drop since January 2021. Late vessels arrived an average of 6.06 days behind schedule, and only 21% of vessels at Shanghai arrived on time.
• Ports are congested. Drewry found that average ship waiting times in the first seven months of 2026 were nearly double 2019 levels, and typhoons in China pushed berth waits to 3.6 days in early August.
• Carriers are managing capacity around Golden Week. On September 17, Drewry’s World Container Index showed Shanghai–Los Angeles up 5% week over week and Shanghai–New York up 7%, with nine blank sailings announced for the following week. As factories reopen after China’s October 1–7 holiday, cargo competes for the first available sailings.
• The Panama Canal has less room. The Panama Canal Authority capped daily transits at 34 vessels from September 4 and cut that to 32 from September 15. Rainfall in the canal watershed from May through August was 34% below the historical average. Asia cargo routed through the canal to East and Gulf Coast ports has less slack.
• Peak season isn’t over. The National Retail Federation said it had expected peak season to be mostly behind us by now, but it isn’t. Its Global Port Tracker forecasts about 2.11 million TEU in October, still 1.7% above last year.

We covered how this market took shape in September 2026 Ocean Freight: What Importers Should Review. For Q4 planning, the key point is simple: a confirmed booking is not the same as a confirmed arrival date.

Why Air Freight Isn’t an Automatic Fix

When ocean slips, air is the obvious backup. But the air market is tight too, and fuel is driving costs up.

• Demand is rising faster than capacity. IATA reported that global air cargo demand rose 4.4% year over year in August while capacity slipped 0.1%. North American carriers posted the strongest growth, at 6.6%. Their capacity fell 2.5% over the same period.
• Fuel is setting the floor. IATA also reported that jet fuel prices were 79.2% higher than a year earlier in August. By mid-September, Platts data cited by TAC Index showed jet fuel more than 100% above last year, with the Baltic Air Freight Index running 20.2% higher year over year.
• Air pricing is up. Xeneta reported that global air cargo spot pricing in August was 24% higher than a year earlier.

Per kilo, air always costs a multiple of ocean, and that’s before air surcharges, handling and final-mile costs. Air freight is also billed on chargeable weight, which is the greater of the actual weight and the volumetric weight. Light, bulky cargo costs more to fly than its scale weight suggests.

The takeaway: flying a full container rarely makes financial sense. Flying the right portion of it often does.

A 4-Question Framework for Ocean-to-Air Decisions

1. When does the cargo need to arrive, not just ship?

Start with the date the goods must be in your DC, store or plant. Then work backward from the next workable sailing, including port congestion, discharge, customs clearance, drayage and receiving. If the realistic arrival misses the required date, that cargo is a candidate for air.

2. What does being late actually cost?

Put a dollar figure on the delay. In automotive logistics, one missing component can stop a production line. In retail, a late arrival can mean empty shelves on the highest-volume weekends of the year, plus chargebacks from retail partners. Time-sensitive products in pharmaceutical and health categories carry their own risks.

3. Which part of the shipment is critical?

Go down to the SKU level. Fly the parts that keep a line running, the top sellers with low weeks of supply, and the items tied to a launch or promotion. Leave slow movers, safety stock and anything with a flexible date on the water.

4. Does the air premium beat the cost of delay?

Compare the full landed cost of air (chargeable weight, origin and destination charges, customs and final mile) with the cost you estimated in question 2. If the premium is lower, fly that portion and keep the rest on the ocean booking. Record the reasoning so finance sees a business decision, not an emergency expense.

Match the Air Service to the Level of Urgency

Not every urgent shipment needs the fastest, most expensive option. GLC’s air freight services cover several levels of urgency:

• Next Flight Out and Hand Courier: small, critical items like line-down parts, where every hour counts.
• Time Critical and Priority: replenishment and launch inventory with a firm in-store or in-plant date.
• Charter Service: larger volumes or oversized cargo when scheduled capacity can’t meet the need.
• Overweight and Hazmat: specialized handling that needs extra planning time.

All-Risk cargo insurance is available for shipments that need added protection. Actual transit times depend on routing, capacity, commodity, customs and destination, so build your plan around confirmed bookings, not best-case estimates.

Don’t Let Customs Erase the Time You Paid For

A faster flight only helps if the entry is ready when the cargo lands. Missing documents, open classification questions or partner government agency requirements can hold air cargo just as long as ocean cargo.

GLC’s licensed in-house customs brokerage team supports import entry processing, classification, PGA coordination and bond management. Customs status and documentation are visible through GLC’s Neo Portal. With CBP putting more weight on importer data, it pays to prepare entries early. See our recent article on CBP import compliance and IOR enforcement. Final determinations remain with U.S. Customs and Border Protection.

How GLC Helps You Split the Shipment

Splitting a shipment works best when one team manages both modes. GLC brings ocean, air, customs and distribution together under one freight forwarding partner:

• Both modes, one forwarder. GLC is a registered NVOCC with the Federal Maritime Commission and holds IATA certification, so the ocean freight balance and the air portion are planned together.
• Lane-by-lane planning. Our team helps you assess capacity and timelines on your specific lanes before you commit cargo to a mode.
• Visibility on both legs. Customized milestones in the Customer Webtracker and GLC’s new client tracking portal keep both parts of the shipment in view.
• A place for the ocean balance. Warehousing and distribution with 300,000 sq. ft. of warehouse space and real-time WMS inventory visibility. Trucking services cover drayage and final mile.
• Fewer emergencies next season. Supply chain consulting helps you rethink inventory buffers and network design.

Plan the Split Before the Next Rollover

Ocean reliability is uneven, air capacity is tight and fuel keeps air costs high. Importers who decide ahead of time which cargo justifies air will move faster and spend less than those who decide after the container has already rolled.

Have Q4 freight at risk? Request a quote and our team will help you compare your next ocean sailing, your required arrival date and your air options, lane by lane.