King Salman International Airport Expansion: Gateway to Expo 2030 Riyadh

The expansion of King Salman International Airport represents one of the most ambitious aviation infrastructure programmes in global history, transforming Riyadh’s air gateway from a conventional national airport into a mega-hub designed to handle 185 million passengers annually at ultimate capacity — a figure that would place it among the busiest airports on earth. The programme, which includes a 4,200-metre third runway currently under construction, a new mega-terminal designed for 40 million passengers annually, and Bechtel’s engagement as delivery partner for three new terminals, is inextricably linked to the success of Expo 2030 Riyadh. The exposition’s projection of 42 million visitors over six months demands aviation capacity that far exceeds the current system’s capabilities, and the airport expansion programme is the primary mechanism through which that capacity will be delivered.

Current State: King Khalid International Airport

Understanding the airport expansion requires contextualizing the current aviation infrastructure serving Riyadh. King Khalid International Airport (KKIA), located approximately 35 kilometres north of the city centre, has served as Riyadh’s primary air gateway since its opening in 1983. The airport currently handles all commercial traffic for the capital and its broader metropolitan area.

KKIA has undergone significant capacity upgrades in the near term to accommodate growing demand ahead of the larger KSIA programme. A terminal reallocation completed in 2025-2026 upgraded Terminals 3 and 4, increasing their combined capacity from 16 million passengers to 25 million passengers. This reallocation, combined with capacity in the existing terminals, brought the airport’s total capacity to 42 million passengers in 2025, expanding further to 56 million passengers in 2026 — representing a 33 percent increase that addresses immediate growth requirements.

These interim improvements are significant but insufficient for the long-term demands generated by the Expo, Saudi Arabia’s tourism growth trajectory, and the Kingdom’s ambition to position Riyadh as a global hub. The revised Vision 2030 tourism target of 150 million annual visitors — comprising 70 million international and 80 million domestic tourists — demands aviation infrastructure of an entirely different magnitude, which the KSIA programme is designed to deliver.

King Salman International Airport: The Vision

King Salman International Airport is conceived as one of the world’s largest airports, occupying a 57 square kilometre site — an area larger than many mid-sized cities. The airport’s ultimate configuration envisions six runways and a passenger capacity of 185 million annually, with 3.5 million tonnes of annual cargo capacity. These figures position KSIA to compete with and potentially exceed the capacity of current global leaders such as Dubai International, Hartsfield-Jackson Atlanta, and the Beijing Daxing airports.

The airport is named after King Salman bin Abdulaziz Al Saud, the reigning monarch, reflecting the project’s status as a national priority with the highest levels of royal patronage. The project is managed as part of the broader Riyadh transformation programme and receives financial backing from the Public Investment Fund, which has committed the resources necessary to deliver the phased development programme.

The airport’s location in the northern sector of Riyadh aligns with the city’s northward expansion trajectory and positions it in proximity to the Expo 2030 site, Diriyah Gate, and other major development projects. Metro Line 7’s planned connection to the airport creates a direct transit link between the air gateway and the Expo, enabling international visitors to reach the exposition without requiring private vehicle transport — a strategic advantage for both visitor convenience and traffic management.

The Third Runway: 4,200 Metres of Capacity

The construction of the third runway represents the most immediately impactful component of the KSIA programme for Expo 2030 readiness. The 4,200-metre runway, significantly longer than KKIA’s existing runways, is designed to accommodate the full range of modern wide-body aircraft, including the Airbus A380 and Boeing 777X, with multiple access taxiways that enable efficient aircraft movements and minimize runway occupancy time.

The third runway’s capacity contribution is substantial. The current runway system supports approximately 65 aircraft movements per hour — a figure that creates constraints during peak periods when arrival and departure demand exceed the system’s throughput. The third runway will increase the movement rate to approximately 85 per hour, a 31 percent increase that provides the headroom needed to accommodate the surge in air traffic generated by the Expo and the broader growth of Riyadh’s aviation market.

The construction contract has been awarded to a joint venture of FCC Construccion SA of Spain and Al-Mabani General Contractors Company of Saudi Arabia. FCC brings international experience in major infrastructure construction, including airports, highways, and civil engineering works across Europe, Latin America, and the Middle East. Al-Mabani contributes deep knowledge of the Saudi construction market, local regulatory requirements, and regional supply chains. The joint venture structure reflects the Kingdom’s preference for partnerships that combine international expertise with local capability and ownership.

Construction commenced in the current period, with the runway’s completion targeted to provide operational capacity well before the Expo’s opening in October 2030. The construction programme involves earthworks extending across the massive runway footprint, installation of drainage and sub-base layers, pavement construction using materials and techniques designed for the extreme temperature conditions of the Riyadh region, and installation of advanced navigation aids, lighting systems, and control infrastructure.

The New Mega-Terminal: 40 Million Passengers

The new mega-terminal represents the centrepiece of the KSIA passenger facilities programme. Designed to process 40 million passengers annually, the terminal will incorporate the most advanced passenger processing technologies available, setting new standards for airport efficiency, passenger experience, and operational capability.

Biometric Passenger Processing

The terminal’s design centres on biometric-based passenger processing — a technological approach that uses facial recognition, iris scanning, and other biometric identifiers to move passengers through check-in, security, immigration, and boarding without the need for physical documents or manual identity verification at each touchpoint. This approach dramatically reduces processing times, eliminates queuing bottlenecks, and improves security by providing continuous identity verification throughout the passenger journey.

The biometric system represents the current frontier of airport technology, with elements deployed at airports in Dubai, Singapore, London Heathrow, and other leading aviation hubs. KSIA’s implementation is designed to be comprehensive rather than supplementary — the entire passenger journey from kerb to gate is designed around biometric processing, rather than adding biometric elements to a conventional layout.

Retail, Dining, and Premium Facilities

The terminal design incorporates extensive retail and dining outlets positioned to serve the diverse tastes and expectations of an international passenger base. Saudi Arabia’s growing reputation as a shopping destination — evidenced by the success of malls and retail experiences in Riyadh, Jeddah, and the Red Sea developments — informs the commercial strategy, which aims to generate significant non-aeronautical revenue while enhancing the passenger experience.

Premium lounges designed for business and first-class travellers reflect the Kingdom’s emphasis on hospitality quality and its aspiration to attract high-value visitors. The lounges are designed as destination experiences in themselves, with facilities, service standards, and design quality that rival the world’s best airport lounges.

Riyadh Metro Integration

A direct Riyadh Metro transport link connects the terminal to the urban transit network, providing seamless multi-modal connectivity between air, rail, and ground transport. This integration is critical for the Expo’s transport strategy, enabling international visitors to transfer directly from their arriving flight to a metro service that delivers them to the Expo site, the city centre, or other destinations without intermediate vehicle trips.

The metro connection also serves the airport’s workforce — the tens of thousands of employees who will operate the terminal, airlines, ground handling services, retail facilities, and support functions. Providing reliable transit access reduces the airport’s parking demand and traffic generation, contributing to the environmental performance of both the airport and the broader transport network.

Construction Timeline

Terminal construction is scheduled to commence in 2026, with the programme designed to deliver operational facilities within the timeframe required for Expo 2030 readiness. The multi-year construction programme involves foundation and structural works, facade and roof installation, systems fit-out (mechanical, electrical, plumbing, IT), interior finishing, testing and commissioning, and operational readiness activities. The complexity of terminal construction — which involves the integration of thousands of individual systems into a single functioning facility — demands rigorous programme management and schedule discipline.

Bechtel Partnership: Three New Terminals

Bechtel’s engagement as delivery partner for three new terminals at KSIA extends the engineering firm’s deep relationship with Saudi aviation infrastructure. The partnership was formalized during President Trump’s visit to Saudi Arabia, reflecting the geopolitical significance of the project and the bilateral commercial relationship between the United States and the Kingdom.

Bechtel brings to the KSIA programme extensive airport delivery experience, including work on airports and aviation facilities across the Middle East, the Americas, and Asia-Pacific. The firm’s role as delivery partner encompasses programme management, design oversight, construction management, and systems integration for the three terminal buildings that will collectively define KSIA’s passenger processing capability.

The Bechtel engagement also creates synergies with the firm’s role as Project Management Consultant for the Expo 2030 site itself. The proximity of the airport and the Expo site, combined with their shared role in accommodating the Expo’s international visitors, creates interdependencies that benefit from unified programme management insight. Bechtel’s concurrent involvement in both projects enables coordination of construction schedules, workforce deployment, supply chain management, and operational readiness activities across the two interdependent programmes.

Airline Capacity Expansion

Airport infrastructure alone does not determine aviation capacity — the airlines that operate from the airport must also expand their fleets, routes, and frequencies to serve growing demand. Saudi Arabia’s airline expansion programme is one of the most aggressive in global aviation, with both the legacy national carrier and a new entrant scaling rapidly.

Saudia

Saudia, the Kingdom’s flag carrier, is ordering hundreds of new aircraft to replace ageing fleet members and expand capacity. The fleet expansion programme includes orders for wide-body and narrow-body aircraft that will increase the airline’s route network and frequency on existing routes. New long-haul services connecting Riyadh directly with major cities in China, Japan, Europe, and the Americas are eliminating the need for connecting flights through traditional hub airports, making Riyadh more accessible to international visitors.

Riyadh Air

Riyadh Air, the Kingdom’s new national carrier launched with PIF backing, is ordering hundreds of new aircraft and establishing Riyadh as its primary hub. The airline’s strategy targets the premium and leisure travel segments, with a service proposition designed to attract high-value international visitors. Riyadh Air’s route development programme is explicitly coordinated with the Expo and tourism strategy, ensuring that direct air service connects Riyadh with the source markets most likely to generate Expo visitors.

The combined fleet expansion of Saudia and Riyadh Air will add thousands of seats of weekly capacity to Riyadh’s air transport market, providing the airline capacity needed to fill the airport infrastructure being constructed. The coordination between airport infrastructure development and airline capacity expansion is managed through the General Authority of Civil Aviation, which ensures alignment between terminal capacity, runway throughput, and airline seat supply.

Ultimate Vision: 185 Million Passengers

The ultimate capacity target of 185 million passengers annually positions KSIA as one of the world’s preeminent aviation hubs, comparable in scale to the largest airports planned or operating globally. This ultimate capacity is not expected to be achieved by 2030 but rather represents the full build-out of the airport’s six-runway, multi-terminal configuration that will be developed in phases over the coming decades.

The six-runway ultimate configuration provides the airside capacity to handle the aircraft movements generated by 185 million passengers, with each runway pair capable of supporting independent parallel operations. The 57 square kilometre site provides the land area for terminal buildings, cargo facilities, maintenance bases, commercial developments, and surface access infrastructure at the scale required for an airport of this magnitude.

The 3.5 million tonnes of annual cargo capacity at ultimate build-out reflects Saudi Arabia’s ambition to position Riyadh as a logistics hub serving the broader Middle East, Africa, and South Asia markets. The cargo facilities are designed to handle both belly-hold cargo on passenger aircraft and dedicated freighter operations, with cold chain, express, and e-commerce handling capabilities that serve the Kingdom’s growing role in global supply chains.

The phased development approach ensures that investment is matched to demand growth, avoiding the financial burden of building capacity before it is needed while ensuring that infrastructure is ready when demand arrives. The Expo and the 2034 FIFA World Cup serve as demand catalysts that justify accelerated investment in early phases, while the longer-term growth of Saudi Arabia’s economy, tourism sector, and population drives the business case for subsequent phases.

Integration with the Expo Transport Strategy

The airport expansion programme is one component of the integrated transport strategy being developed for Expo 2030. The strategy encompasses air access (airport and airline capacity), ground access (metro, road, bus, and taxi networks connecting the airport to the Expo site and accommodations), and internal circulation (movement within the Expo site itself).

For international visitors, the ideal journey chain moves seamlessly from aircraft to airport terminal to metro to Expo station to site entry, with minimal friction at each transition point. The biometric processing at the airport terminal, the direct metro connection, and the digital ticketing and wayfinding systems at the Expo site are designed to create a continuous, technology-enabled journey that minimizes waiting, confusion, and physical effort.

For domestic and regional visitors arriving by air from other Saudi cities or GCC states, the airport provides high-frequency shuttle services on narrow-body aircraft that land at dedicated domestic terminals. These visitors may also arrive by road or rail, using the highway network and the planned inter-city rail connections that are part of the broader Saudi transport strategy.

The transport strategy also addresses the return journey, ensuring that visitors departing the Expo can reach the airport efficiently during peak departure periods. Evening and late-night metro services, taxi and ride-share staging areas, and bus connections are designed to handle the surge demand that occurs as the Expo’s daily programme concludes and visitors return to their accommodations or proceed directly to the airport.

Economic Impact of Airport Development

The KSIA programme generates substantial economic impact beyond its direct role in aviation. Construction employment during the multi-year development programme supports tens of thousands of jobs in engineering, construction, manufacturing, and services. Operational employment at the completed airport will be measured in hundreds of thousands of positions across airlines, ground handling, security, retail, hospitality, maintenance, and administrative functions.

The airport’s role as a connectivity enabler amplifies its economic impact through tourism spending, business travel, trade facilitation, and foreign investment attraction. Research on airport economics consistently demonstrates that international air connectivity is one of the strongest predictors of a city’s economic performance, and the KSIA programme’s transformation of Riyadh’s connectivity profile is expected to generate economic returns that far exceed the direct financial performance of the airport operation itself.

For the Expo specifically, the airport’s capacity determines the ceiling on international visitor arrivals. If the airport cannot process sufficient volumes of arriving and departing passengers, the Expo’s attendance targets cannot be achieved regardless of the quality of the exposition itself. The airport expansion programme thus functions as a critical enabler — necessary but not sufficient — for the Expo’s success.

Challenges and Risk Management

The airport programme faces challenges typical of mega-scale infrastructure projects: construction complexity, supply chain management, workforce availability, regulatory compliance, and the coordination of multiple contractors and systems integrators working simultaneously across a vast site. The fixed opening date of Expo 2030 creates a hard deadline for at least the first phase of KSIA capacity to become operational, adding schedule pressure to an already demanding programme.

The Saudi Arabian General Authority of Civil Aviation manages the regulatory framework for the airport’s development, ensuring compliance with International Civil Aviation Organization standards, safety requirements, and operational procedures. The regulatory approval process for new runways and terminals involves extensive testing, inspection, and certification that must be completed before facilities can accept commercial traffic.

Weather conditions in the Riyadh region — extreme heat during summer months, occasional sandstorms, and very low rainfall — create construction challenges that experienced contractors in the region understand and manage through scheduling adaptations, material selections, and worker welfare protocols. The FCC-Al Mabani joint venture’s combination of international and local experience is specifically suited to managing these conditions.

The ultimate vision for King Salman International Airport — 185 million passengers, six runways, 57 square kilometres — represents a multi-decade commitment that will define Riyadh’s role in global aviation for the remainder of the 21st century. The Expo provides the impetus to accelerate the early phases of this vision, creating aviation infrastructure that serves both the six-month event and the permanent transformation of Saudi Arabia’s capital into a world-class air connectivity hub.