Heathrow Airport has confirmed its long-planned third runway will open closer to 2039 than the previously stated 2035 target, extending by up to four years a decision that directly affects UK air-cargo capacity, shipper routing options and long-term tonnage growth at Britain's only hub airport.

A Heathrow spokesperson told Reuters that 2035 had been an "ambitious target." The airport added: "Our focus has always been to secure planning permission by 2029. Once achieved the runway will be open within a decade."

What does the delay actually change?

In Q1 2025 results published 30 April 2025, Heathrow had set a 2035 operational date, conditional on the UK Government's response. A January 2026 reset moved the government's timetable to planning permission by 2029 and the runway "open within a decade" — by 2039 at the latest.

Planning approvals, capital outlay and supply-chain dependencies now sit firmly in the next decade. For cargo buyers, no near-term relief is in sight at a slot-constrained gateway where belly capacity is rationed and freighter slots remain scarce.

Logistics UK welcomed Heathrow's funding approval for the planning application in January, calling it a critical first step toward the 2029 planning target. Until permission is secured, shippers face at least another three to four winters of capacity tightness on transatlantic and Asia-Europe lanes routed through LHR.

What is in the runway scheme?

The Heathrow Northwest Runway, put forward by Heathrow Airport Limited (HAL), won government backing in November 2025 under the Airports NPS review. Key elements:

• A 3.5 km new runway to the northwest of the existing airfield
• A tunnel under the development carrying the M25 motorway
• Reconfiguration of taxiways and terminal access

The Heathrow Expansion National Policy Statement described the HAL plan as "the most credible and deliverable option" to feed into the Airports NPS review.

Heathrow will run a public consultation from 27 October to 22 December 2026, an eight-week window for residents and stakeholders to review the plans before a planning application is submitted.

How much cargo moved through Heathrow in 2025?

Heathrow handled 1.5 million tonnes of cargo in 2025, up 0.8% year on year. UK-origin and destination cargo surged 29.7%, while North America tonnage rose 4.6%. The figures underline how strongly domestic and transatlantic volumes are recovering — and how much latent demand a third runway will eventually absorb once it opens.

For freight forwarders, the runway timeline has direct commercial read-through: freighter operators committing to long-term basing decisions at LHR, integrators sizing up sort capacity, and shippers tendering multi-year air freight contracts all price in slot availability years ahead of delivery.

What else is Heathrow doing for cargo?

While the runway slips, Heathrow is pressing ahead with operational cargo upgrades:

• Redevelopment of its central "Horseshoe" cargo area under a participatory stakeholder model
• Rollout support for the CCS-UK AIS (Advance Information System) portal for booking and monitoring trucks
• Continued coordination with forwarders on gate appointments through the same platform

These measures buy incremental throughput and dwell-time gains at the existing two-runway footprint. They do not substitute for the structural capacity a third runway will eventually provide to long-haul belly and dedicated freighter operations.

What happens next?

Heathrow's 2026 consultation closes 22 December. The airport will then prepare and submit a planning application, targeting a 2029 permission decision. From consent, Heathrow commits to runway opening within a decade. Shippers and carriers underwriting growth into the late 2030s should plan around a 2039 base case, not 2035.