Heathrow Sets New Passenger Record with 40 Million in H1 2026 Amid Third Runway Expansion Progress

Heathrow Passenger Growth Hits New High Despite Revenue Challenges

Heathrow (SP) Limited, the holding company for London’s primary international airport, announced a record 40 million passengers for the six months ended 30 June 2026, marking a slight 0.2% increase from 39.9 million in H1 2025. This milestone was achieved despite significant geopolitical disruptions, notably the Middle East conflict causing a 25.1% drop in traffic to that region year-on-year. The airport offset these challenges by shifting focus to stronger growth markets, with Asia-Pacific passenger numbers rising 7.9%, North America up 1.6%, and Africa increasing 7.2%.

However, this passenger volume growth did not translate into proportional revenue gains. Revenue marginally increased by 0.3% to a31,729 million from a31,724 million the previous year, indicating constraints in yield per passenger or ancillary revenue growth. Adjusted EBITDA fell 4.6% to a3915 million compared to a3959 million in H1 2025, reflecting that operating cost inflation outpaced revenue increases.

Operating Costs Rise Sharply Due to Taxes and Technology Investments

Adjusted operating costs rose 6.4% to a3814 million in H1 2026 from a3764 million in the same period last year. Key drivers included higher Government taxes such as business rates and national insurance contributions, alongside targeted capital expenditures on new technology systems designed to boost future operational efficiency and service quality. The company did not specify cost breakdowns for each factor.

The gap between rising costs and stagnant revenue pressured profit margins. Despite Heathrow’s recognition as one of the world’s top airports in the Skytrax awards, especially for retail, translating passenger growth into earnings proved challenging. This margin compression underscores the capital-intensive, regulated nature of UK airport operations where pricing power is limited and fixed costs are substantial. Management’s ongoing technology investments indicate acceptance of near-term margin pressure to secure long-term competitiveness.

Completion of a31 Billion Security Upgrade Enhances Passenger Experience

Heathrow became the first major international airport to fully deploy next-generation computed tomography (CT) security scanners across all terminals, completing a a31 billion upgrade. This innovation allows passengers to keep liquids and laptops in carry-on bags during security screening, reducing queues and improving convenience. Security performance improved slightly, with 98.6% of passengers clearing security within five minutes, up from 98.5% in H1 2025.

The airport also advanced a new "front door" facility for Terminal 4, featuring upgraded check-in areas, reduced vehicle congestion, and a new multi-storey car park. Terminal 2’s baggage system received critical upgrades to enhance resilience. Capital expenditure reached a3642 million in H1 2026, up from a3570 million in H1 2025, reflecting accelerated infrastructure investments aimed at improving service quality and supporting upcoming regulatory discussions.

Transfer Passenger Growth and Network Expansion Bolster Traffic Resilience

Transfer passenger traffic grew 5.4% year-over-year, outperforming the modest 0.2% overall passenger increase, highlighting Heathrow’s strength as a global connectivity hub despite regional geopolitical tensions. Larger aircraft deployments and eight new routes launched in spring 2026 across Europe, Asia, and North America supported this trend. Notably, direct service to St Louis, the USA’s "gateway to the west," was introduced alongside three new carriers—Alaska Airlines, ITA Airways, and Pakistan International Airlines—joining the summer schedule.

Cargo volumes rose 0.6% to 788,000 tonnes despite a 1.7% decline in passenger aircraft movements, reflecting higher cargo density per flight. Seat factors improved to 78.8% from 77.3%, demonstrating more efficient capacity utilization. These metrics confirm Heathrow’s continued recovery from pandemic impacts and its critical role in global trade.

Strong Operational Metrics Amid Middle East Conflict Challenges

Passenger satisfaction remained high with an Airport Service Quality (ASQ) score of 4.11 out of 5 in H1 2026, the best first-half score since 2019, up from 4.06 in H1 2025. Additionally, 79% of passengers rated their experience as "Excellent" or "Very Good," an increase from 77%. "Poor" ratings stayed low at 0.4%, indicating consistent service despite high operational demand.

Operational punctuality declined slightly, with arrival punctuality at 79.0% versus 81.1% and departure punctuality at 80.0% versus 80.8% the prior year. These reductions were attributed to ongoing Middle East conflict disruptions, adverse weather, and storm events. Baggage connection performance dipped marginally to 98.3% from 98.8%. Despite these challenges, Heathrow maintained its status as Europe’s most punctual hub airport.

Robust Financial Health Enables a3200 Million Dividend Payout

Heathrow sustained a strong financial position despite EBITDA pressures. Gearing remained near historic lows at 83.2%, reflecting conservative leverage for a regulated infrastructure asset. Liquidity stood at a33.8 billion, sufficient for at least 18 months of obligations. Cash generated from operations rose 2.0% to a3880 million from a3863 million, underscoring resilient operational cash flow.

Shareholders received a a3200 million dividend during the period, signaling management’s confidence in business stability. Profit before tax surged 120.2% year-over-year to a3447 million from a3203 million in H1 2025. However, adjusted profit before tax, excluding fair value gains and losses, decreased 5.0% to a3115 million from a3121 million, indicating that reported profit growth was partly driven by non-recurring items.

CAA Advances H8 Regulatory Framework Amid Industry Debate

The Civil Aviation Authority released Initial Proposals for the H8 regulatory period on 31 March 2026, suggesting passenger charges between a327.20 and a330.81, with a midpoint of a328.77 (CPIH-real, 2024 prices). Heathrow responded on 29 May 2026, after which the CAA launched a June consultation on a 2027 holding cap set at a328.398. Final proposals are expected in November 2026, with a decision anticipated in April 2027.

Regulatory uncertainty remains a key challenge. Heathrow has urged regulators for longer-term certainty, smarter financial incentives, and independent oversight to support expansion delivery. Airlines operating at split-operator airports have raised concerns about the regulatory model’s impact on passenger experience and competition, questioning its applicability to Heathrow. The company plans to submit further evidence ahead of the November decision, indicating ongoing regulatory engagement.

Government Launches Public Consultation on Heathrow Expansion Policy

On 18 June 2026, the UK Government completed its review of the Airports National Policy Statement and opened a public consultation on the draft Heathrow Expansion National Policy Statement (HENPS), running until 1 September 2026. Until Parliamentary approval, the original ANPS remains effective. The Government designates Heathrow as Critical National Growth Infrastructure, recognizing its economic importance across the UK.

The third runway expansion is a privately funded project requiring no taxpayer subsidy. The Government estimates it will create 60,000 jobs and generate a340 billion in economic growth, increasing trade through Heathrow by 50% once operational. The expansion enjoys broad support from trade unions, businesses, and 68% of local residents. Heathrow intends to respond to the consultation to help ensure the final policy facilitates timely delivery.

Regulatory Treatment of Expansion Costs Under Review

Alongside the political consultation, the CAA is evaluating regulatory approaches to early expansion costs. Heathrow stresses the need for a fair, evidence-based Weighted Average Cost of Capital (WACC) aligned with regulatory finance principles and market conditions. The company advocates flexibility in early cost allowances to reflect updated forecasts and benefits from early property acquisitions reducing long-term risks.

The CAA published a draft licence modification in spring 2026 on recovering early expansion costs incurred in 2025 and 2026 via airport charges. A final decision is expected in July 2026, with further consultations on costs from 2027 onward planned. The CAA is also exploring broader regulatory models for expansion, with Heathrow’s January 2026 evidence submission emphasizing timely delivery, cost efficiency, and strong consumer outcomes. Recent CAA consultations indicate support for an enhanced single Regulatory Asset Base model with integrated owner-operator structure.

Extensive Capital Programme Advances Across Multiple Strategic Areas

Heathrow continues strong progress on its H7 capital programme, comprising over 350 projects across six strategic pillars. Initiatives include full deployment of next-generation security scanners, completion of Terminal 2 baggage upgrades, start of Terminal 1 demolition, and advancement of the Terminal 4 "front door" project.

Commercial developments feature a new VIP online booking portal, expansion of Terminal 5 luxury retail, and progress on the Eastern Business Park. Operational resilience improved via northern airfield taxiway resurfacing, cargo tunnel refurbishment, baggage system enhancements, and aircraft stand refurbishments. Technology upgrades include real-time aircraft turn management at Terminal 5, an Integrated Intelligent Queue Programme, a Border Force Holding Facility, and new runway temperature sensors. These efforts reflect disciplined capital allocation aligned with Heathrow’s long-term strategy.

Regulatory Asset Base Grows Reflecting Inflation and Capital Investment

The Regulatory Asset Base (RAB), representing invested capital adjusted for inflation and eligible expenditure, rose 1.9% to a321,662 million as of 30 June 2026 from a321,263 million at 31 December 2024. This regulatory metric reflects inflation indexing and new qualifying capital investments.

Heathrow Finance plc’s consolidated nominal net debt increased 2.3% to a318,025 million from a317,622 million, while Heathrow (SP) Limited’s consolidated nominal net debt grew 4.1% to a316,350 million from a315,706 million. These figures include index-linked swap accretion and cross-currency interest rate swap hedging but exclude lease liabilities, accrued interest, bond costs, and intra-group loans. Debt growth aligns with capital deployment exceeding operating cash flow, typical for infrastructure assets in investment phases.