Gatwick Second Runway Gets Go-Ahead

Gatwick Airport is preparing to move ahead with its £2.2 billion expansion after campaigners lost their latest legal challenge, clearing the way for the airport's existing emergency runway to be brought into regular use.

The expansion represents one of the biggest changes at Gatwick in decades and could eventually allow approximately 100,000 additional flights a year, significantly increasing capacity at Britain's second-busiest airport.

The Court of Appeal dismissed an attempt by local campaign groups to challenge an earlier High Court ruling that allowed the project to proceed.

With the legal challenge unsuccessful, Gatwick can now begin progressing the development, with the airport hoping to have its second runway operating as early as 2030.

Unlike the construction of an entirely new runway, Gatwick's expansion centres on its existing Northern Runway, which has traditionally served as a standby or emergency runway.

Under the £2.2 billion project, the runway will be repositioned slightly so that it can be used routinely alongside Gatwick's main runway.

The Northern Runway is expected primarily to handle departing short-haul aircraft, allowing the airport to increase the number of flights it can accommodate.

Gatwick is already one of the world's busiest airports operating predominantly from a single runway, so bringing the Northern Runway into regular use would represent a substantial increase in operational capacity.

The expansion could eventually enable Gatwick to accommodate approximately 100,000 additional flights annually.

Government estimates suggest the increased capacity could allow around 13 million additional passengers to use the airport each year.

For travellers, the additional capacity could ultimately mean a wider selection of destinations, more frequent services and increased competition between airlines operating from Gatwick.

The Government has argued that expanding the airport will also strengthen the UK's international connections and support economic growth.

Gatwick Airport welcomed the Court of Appeal decision, which follows years of planning, consultation and legal scrutiny.

Gatwick chief executive Pierre-Hugues Schmit said the ruling brought to an end an eight-year planning and legal process during which the airport's expansion proposals had been examined on multiple occasions.

The airport can now turn its attention towards delivering the project and preparing the Northern Runway for routine passenger operations.

If the development remains on schedule, Gatwick hopes the additional runway capacity could become operational from around 2030.

The Government described the court decision as an important milestone for both Gatwick and surrounding communities.

The expansion was approved by the Transport Secretary in September 2025 and forms part of wider plans to increase UK airport capacity.

The Government argues that an additional 13 million passengers and approximately 100,000 flights annually could provide travellers with greater choice while strengthening Britain's international connectivity.

It has also said that airport expansion must be compatible with the UK's environmental commitments.

As part of efforts to reduce aviation emissions, the Government is investing more than £219 million in sustainable aviation fuel production.

The expansion has faced considerable opposition from environmental and local campaign groups.

Campaigners sought a judicial review of the Department for Transport's decision to approve the project, arguing that the climate consequences of increasing Gatwick's capacity had not been adequately considered.

Opponents have also raised concerns about aircraft noise, air pollution, additional road traffic and pressure on public transport around the airport.

Peter Barclay, chair of the Gatwick Area Conservation Campaign, expressed disappointment following the court decision and argued that continued airport expansion could increase aviation's climate, noise and air-pollution impacts while placing additional pressure on neighbouring communities.

The Court of Appeal's decision means that this legal challenge will not prevent Gatwick from progressing with the development.

For passengers, there will be no immediate change to normal airport operations.

The second runway project is a major infrastructure development that will take several years to complete.

Once operational, however, increased runway capacity could enable airlines to introduce additional frequencies and potentially new destinations from Gatwick.

Greater capacity could be particularly significant during busy summer and holiday periods when demand for flights from London's airports is highest.

The expansion could also increase the number of passengers requiring transport to and from Gatwick, placing additional importance on rail, road, taxi and private airport transfer services.

The Gatwick decision comes as another major London airport moves forward with its own expansion.

Legal challenges against the planned expansion of London Luton Airport have also been cleared.

Plans for Luton would increase its annual passenger capacity from approximately 19 million to 32 million passengers by the mid-2040s.

The company behind the development says the expansion could create up to 11,000 new jobs and generate as much as £1.5 billion in additional economic activity each year, while operating under controls covering noise, carbon emissions, air quality and transport access.

Together, the Gatwick and Luton projects could significantly increase airport capacity serving London and the South East over the coming decades.

With the latest legal challenge dismissed, attention will now shift towards construction and implementation of the Northern Runway project.

The development will require changes to airport infrastructure and supporting facilities before the runway can begin regular commercial operations.

For passengers, Gatwick will continue operating normally while this work progresses.

If the airport achieves its current timetable, the result could be a substantially larger Gatwick by the beginning of the next decade — capable of handling millions more passengers and tens of thousands of additional flights each year.

Written by Airports Transfer for passengers travelling to and from London airports.