In 2024, Athens International Airport was one of the fastest growing airports in Europe. Among the “mega” airports above 25m passengers per year, Athens was second top at 13.1% growth, bested only by Rome Fiumicino’s massive 20.7%. For reference, London Heathrow saw 5.9% growth and Paris Charles de Gaulle saw 4.3%.
Now, Athens International Airport (AIA) needs to expand to meet this surging demand. In 2024, the airport handled 31.9m passengers, compared to 2023’s 28.17m. If growth continues on this trajectory, Athens International simply won’t be able to handle the increased traffic.
As a result, the airport has launched a €1.3bn expansion, in phases. The project aims to raise capacity from 26m to 40m passengers annually by 2032.
Travellers at check-in, Athens International
Phase one
The first phase, already underway, is budgeted at €650m. This initial expansion will increase capacity to 33m passengers by 2028. Works include an 81,000 sqm terminal extension, 32 new aircraft parking stands, two new boarding bridges and a seven-storey parking garage with 3,365 spaces.
Phase two
The second phase will add another 69,000 sqm and push total capacity to 40m by 2032. That includes new retail and dining zones, extended passenger areas and more apron space. AIA has also launched tenders for a new aircraft apron and multi-level parking structure. TERNA–REDEX has been selected as contractor, with construction expected to last three years.
Passengers in the departures hall at Athens internationalUK and Greek architects
UK-based architects Grimshaw and Haptic have spearheaded the design. They’re not the only ones involved, though – a consortium of Greek and UK-based companies was set up, called the Anemos consortium.
Together, the firms aim to design an expansion that blends Athens’ cultural heritage with modern passenger needs. Features include two “oculus” atriums filled with gardens, terraces and natural light. The new main terminal will expand northward in a Y-shape and include a three-level, open-air entrance plaza with Mediterranean landscaping and amphitheatre seating.
The airport will remain operational throughout construction.
Athens International Airport new permanent sculpture. Photo by Giorgos SfakianakisSustainability aims
Reportedly, sustainability is also a main focus. AIA wants to acquire LEED Gold certification by using passive design, low-carbon materials and renewable energy.
The expansion is one of Europe’s largest aviation projects. AECOM, Hill International and Salfo & Partners are overseeing project management. Tender submissions for key sub-projects close in early 2026.
