Changi Airport Terminal 5: Complete Guide (Opening, Size, Airlines)

It’s not every day you hear about an airport terminal that won’t open for another decade, yet builders are already breaking ground. That’s the story of Changi Airport Terminal 5, a megaproject that says more about Singapore’s long-term bet on aviation than any short-term passenger forecast.

Opening timeline: mid-2030s ·
Changi East district size: 1,080 hectares ·
Exhibition: T5 In the Making at T3 Arrival Hall until March 2026 ·
MRT station: Changi Terminal 5 MRT station (future interchange on Cross Island Line) ·
Architect: Heatherwick Studio and KPF

Is Changi T5 open?

No — Terminal 5 is very much still a future project. The terminal is not open to passengers, and it won’t be for years. Groundbreaking took place in May 2025, a milestone confirmed by the Singapore Ministry of Transport, which simultaneously announced that contracts for tunnels, airfield, and substructure works had already been awarded in the first half of 2025.

Current status of Terminal 5 construction

As of early 2026, the site is moving forward with enabling works. The Passenger Terminal Today report (a specialist aviation outlet) describes an immersive exhibition titled “T5 In the Making” that opened at Terminal 3’s Arrival Hall. It runs until March 2026 and is organized jointly by the Ministry of Transport, the Civil Aviation Authority of Singapore, and Changi Airport Group — giving the public a rare look at what hasn’t yet been built.

Official announcements and timelines

The exhibition’s content covers Changi Airport’s relocation history from Paya Lebar and the planned scale of Terminal 5. The Changi Airport Group officially identifies Terminal 5 as a major future development on its corporate site. The phrasing is deliberate: this is preparation for a terminal that will open in the 2030s.

How big is the T5 in Changi?

Massive — and that’s the point. Terminal 5 sits within the 1,080-hectare Changi East district, a stretch of reclaimed land that will more than double the airport’s current footprint. Wikipedia’s infrastructure page says the terminal itself will be built on that land.

Size of the terminal building

The terminal is expected to handle about 50 million passengers a year when it opens, according to a news video segment. That would bring Changi’s total annual capacity to roughly 140 million — a jump of more than 50% over the current four terminals combined.

Comparison with existing terminals

For context: Terminal 4, which opened in 2017, handles about 16 million passengers. Terminal 5 will handle three times that. Wikipedia lists 49 aerobridge stands for T5, with remote stands still listed as TBC.

Why is Changi T5 so big?

Because Singapore is betting that air travel won’t stop growing. Changi is already one of Asia’s busiest hubs, and the Changi Airport Group has framed T5 as a response to long-term demand — not a short-term bump.

Future passenger demand projections

The Ministry of Transport states that T5 is “part of the Government’s investment in aviation infrastructure to support Singapore’s hub ambitions.” The language is about capacity headroom, not immediate need.

Singapore’s role as a global air hub

The chokepoint today: Changi’s current terminals run near capacity during peak hours. T5 provides a buffer — a decade-long one, but a buffer nonetheless.

What airlines will be at terminal 5?

Singapore Airlines (SIA) and its budget arm Scoot are confirmed to operate from T5. That’s from Ministry of Transport briefings. Full airline allocation remains TBD.

Expected airlines and alliances

Given SIA’s dominant position at Changi, T5 will likely host the carrier’s long-haul and regional flights. Scoot will probably shift from Terminal 2 or 3. The final allocation will depend on terminal design and airline preferences.

SIA and Scoot confirmed

The Ministry of Transport statement names both carriers. Other airlines will be assigned later.

When will Changi Airport Terminal 5 open?

Mid-2030s is the official target, but the first announcement of a fifth terminal came in 2013. Then Transport Minister Lui Tuck Yew first floated the idea on May 7, 2013.

Construction timeline

Groundbreaking in May 2025 means construction has started. The Passenger Terminal Today exhibition provides a public timeline: the terminal is expected to open in the 2030s, with the MRT station (Changi Terminal 5 on the Cross Island Line) aligned to that date.

Key milestones and delays

No major delays have been announced. The Wikipedia page notes that the project has been “described as costing around US$10 billion,” though that figure is unconfirmed.

What are the key innovations and features of Terminal 5?

Design innovations by Heatherwick Studio and KPF — both globally recognized architecture firms — are a central part of the pitch. The “T5 In the Making” exhibition highlights their concepts.

Design innovations by Heatherwick Studio

Heatherwick Studio (known for Little Island in New York and the Vessel) and KPF (known for skyscrapers) are designing a terminal that prioritizes natural light, passenger flow, and sustainability, per Passenger Terminal Today.

Sustainability and passenger experience

Underground baggage handling and an automated people mover connect T5 to Terminal 2, per Ministry of Transport specs.

Transport connections

The Changi Terminal 5 MRT station on the Cross Island Line will be a key interchange. Ministry of Transport confirms an underground people mover will connect T5 to T2 for seamless transfers.

MRT connections

The Changi Airport Group future developments page confirms the MRT station. The rest of the road network — including an expressway alignment — is still in planning.

For travellers interested in the full scope of the project, a closer look at the detailed plans for Changi Terminal 5 reveals the phased construction timeline and the role of Heatherwick Studio.

Frequently asked questions

“Terminal 5 is not about today’s demand — it’s about the demand in the 2040s.”

Ministry of Transport, Singapore