Keflavik Airport

Doubling capacity at Iceland's principal airport

Pursuing a sustainable world on Iceland’s largest ever infrastructure programme.

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Keflavik Airport Project summary

Client company name


Services provided

Programme sustainability management



Services provided



Aviation, Transport


UK and Europe


Project story

As Iceland's largest airport, Keflavik’s ideal location provides not only an important gateway for tourism, but a central hub, crucial in export of Icelandic goods across the world. And in 2015, Iceland’s national airport provider, Isavia, published its 25-year plan for the continued expansion of Keflavik as the major North Atlantic base for air traffic, further boosting the airport's value as an engine for the country’s economic growth. We’re proud to be working with Isavia to deliver on that vision.

Isavia’s aim is to double the capacity of the existing airport over the next ten years, whilst also reducing the carbon footprint of operations and flights, maximising efficiency of construction. Targets include reducing operational carbon footprint by 99% by 2030 and the programme will invest up to €1.5bn in a new 85,000m², 17 airbridge-served aircraft gate East Pier, a new North Terminal, landside infrastructure developments and other associated works - all enabling Keflavik Airport’s capacity to grow incrementally (and sustainably) alongside passenger demand.

Our 30-strong team provides a full range of programme management services across the project, including sustainability. Two environmental specialists sit within the Mace project design teams, and a social value expert is embedded into the community, stakeholders, and supply chain.

In 2020 Mace created the programme’s legacy and sustainability plan. This document set the programme’s vision, laying out the benefits and costs of tackling sustainability, and listing targets and detailed recommendations for delivering a sustainable programme over the next ten years. Since then, we’ve been translating this vision and ambition into tangible, deliverable actions.

Our focus has been delivering sustainability across three areas: environment, social value, and leaving a learning legacy. Whether it’s driving positive change to achieve net zero and enhanced biodiversity, creating sustainable work and employment opportunities or fostering prosperous communities and a circular economy, we’re making realistic and practical recommendations based on our vast experience of adding value to similar projects across the aviation sector.

Project Stats

85,000 East Pier
99% carbon footprint reduction by 2030
14.5m passengers a year after expansion


Embedding sustainability

By weaving sustainability into the organisation’s governance structure from top to bottom, and working closely with the programme partners, wider supply chain and end users, we have a much better chance of success.

Practical and flexible

We’ve worked with the Isavia sustainability team to create an agile framework, supported by a useful guidance document, to help teams plan, design, procure, construct and operate sustainably. We’ve provided training and support to ensure maximum utilisation. The framework is designed to work across the entire programme portfolio, encompassing individual projects from 100,000 up to over 300m.