AI and semiconductor shipments powered June air cargo demand, with technology corridors from Taipei and Seoul absorbing capacity that traditional consumer freight has shed, Supply Chain Dive reported.

The headline captures a structural reallocation reshaping the belly of the global air freight market. Where 2023 saw a broad-based recovery driven by e-commerce and post-pandemic restocking, the first half of 2024 has narrowed sharply around a single vertical: the hardware that powers artificial intelligence.

Why does AI hardware travel almost exclusively by air?

Every advanced GPU, high-bandwidth memory module and piece of lithography equipment moves on a time-definite schedule. Semiconductor fabs in Taiwan, South Korea and Arizona operate on just-in-time delivery windows. Each generation of chipmaking equipment is too valuable, too fragile and too central to production for ocean transit to be an option.

The result is a freight segment that behaves nothing like general air cargo. Lead times on AI infrastructure stretch 12 to 18 months, with hyperscaler capex commitments from Microsoft, Google, Amazon and Meta translating directly into multi-year air freight allocations.

Where is the volume concentrated?

The transpacific technology corridor now carries more revenue per kilogram than almost any other air freight lane. Key flows include:

• Taipei to Los Angeles and Anchorage: GPUs, HBM memory and packaging materials
• Seoul (Incheon) to Anchorage and Louisville: Samsung and SK Hynix memory products
• Tokyo (Narita) to Chicago: Lithography components and capital equipment
• Chandler, Arizona to Asia: TSMC and Intel outbound finished wafers and chips

Combination carriers have responded by adding scheduled widebody capacity. Cathay Cargo, Korean Air Cargo and DHL Express have all expanded transpacific services over the past 18 months. Pure freighter operators including Atlas Air and Western Global have positioned aircraft specifically for semiconductor and capital equipment runs.

What does the shift mean for shippers, carriers and forwarders?

The commercial consequence is a bifurcated market. Spot rates on traditional lanes from Hong Kong and Shanghai to North America have softened as ocean capacity normalizes and retailers pull forward less inventory. The technology corridor has held firm, with ULD space out of Taipei and Incheon commanding premium pricing.

For forwarders handling these flows, the priority is reliability over rate. Capacity is allocated months in advance, with little exposure to the spot volatility that affects other verticals. This insulates the segment from demand swings that pressure other air cargo categories, from perishables to pharmaceuticals.

Carriers have restructured commercial teams to serve the vertical directly. Dedicated semiconductor and AI logistics units now sit inside the major integrators, negotiating multi-year block space agreements and managing oversize-piece movements for capital equipment.

What should freight buyers watch in the second half?

Three variables will determine whether the pattern deepens through 2024 and into 2025:

• Hyperscaler capex guidance for 2025
• Export controls on advanced chips, particularly to China
• The commissioning cadence of new fab capacity in Arizona, Ohio and Kumamoto

Each carries direct implications for air freight demand. The Supply Chain Dive report frames June as a continuation of a trend that surfaced in late 2023, when AI-related shipments first appeared as a distinct line item in carrier revenue disclosures. The expectation among industry analysts is that semiconductors and AI hardware will continue to expand their share of total air cargo revenue, providing a structural floor under transpacific rates that few other categories can match.