Singapore’s Changi! (Airport Analysis #9)
Exploring Southeast Asia's Premier Aviation Hub and Its World-Class Facilities
Singapore Changi Airport: An Analysis of One of the World's Most Popular Airports
Hello, dearest readers, and welcome back to our airport analysis series!
The most important and popular airport in Southeast Asia needs to be discussed here. Changi Airport in Singapore is that airport. In particular, it is also the most popular airport in the region and often competes with Doha's Hamad International Airport and Dubai International Airport for the world's best airport award, frequently placing in the top two or three, if not at number one. The airport has won over 700 awards since its opening, including 28 "Best Airport" awards in 2025 alone.
Changi also functions as one of the most significant aviation gateways in the Asia-Pacific region, alongside Thailand's Suvarnabhumi Airport in Bangkok and Japan's Narita International Airport in Tokyo.
Singapore's airport is a base for more than 100 international carriers, with scheduled services linking Singapore to destinations across Asia, Oceania, Africa, Europe, the Middle East, and North America. As of 2025, Changi Airport handled about 70 million passengers and ranked as the 16th-busiest airport by passenger traffic, as well as the fourth-busiest international airport by seat volume, based on publicly available data.
It is the home base of Singapore Airlines, the nation's flag carrier, along with its associated subsidiaries, Singapore Airlines Cargo and Scoot, a regional low-cost carrier wholly owned by Singapore Airlines. The airport also hosts the operations of BOC Aviation, a major global aircraft-leasing firm. Ground and catering services are provided by SATS and dnata Singapore Catering, whose facilities are located within the airport precincts.
The airfield infrastructure comprises three operational runways, each measuring 4 kilometers in length. While the main airport code is WSSS, the third runway, designated 02R/20L, was formerly part of the adjacent Changi Air Base (East) and was used by the Republic of Singapore Air Force (RSAF), carrying the ICAO code WSAC. Therefore, both codes are technically correct, although most airlines simply use the IATA code "SIN" for identification.
The terminal complex includes four passenger terminals, of which Terminals 1, 2, and 3 are directly connected to Jewel Changi Airport, a mixed-use development featuring retail, dining, and entertainment facilities integrated with airport infrastructure, unlike anything previously offered at global international airports. A fifth terminal is currently under construction as of 2026.
Changi Airport's efforts to mitigate the effects of aging infrastructure include continual physical upgrades to its existing terminals and the construction of new facilities to maintain its high standards of airport service quality.
Let's Add Some Historical Context Here, Shall We?
Prior to Changi, Singapore's main international airport was located at Paya Lebar Air Base. It opened in 1955 with a single runway and a small passenger terminal, having itself replaced the previous Kallang Airport, which began operations in 1937.
The decision to move the airport from Paya Lebar to Changi was based on a number of factors. With the growth of global aviation, the airport was facing congestion problems. Its inability to cope with rising traffic became critical by the 1970s; annual passenger numbers rose dramatically from 300,000 in 1955 to 1.7 million in 1970 and to 4 million in 1975.
As a result, there was a need to accommodate the growing demand for air travel, establish Singapore as a global aviation hub, and modernize the country's air transport infrastructure.
The Singaporean government had two options: expand the existing airport at Paya Lebar with military cooperation or build a new airport at another location. After extensive studies, a decision was made in 1972 to keep the airport at Paya Lebar, as recommended by aviation consultants. Plans were made for the construction of a second runway and an extensive redevelopment and expansion of the passenger terminal building.
A year later, however, the plans were reviewed again as the pressure to expand the airport eased because of the 1973 oil crisis. The new airport was subsequently approved by both the Singaporean government and the aviation authority.
The original master plan for Changi Airport involved constructing a dual-terminal and dual-runway configuration over two phases, with provisions for another two passenger terminals in the future.
Phase 1 included the construction of the first passenger terminal, the first runway, which reused and upgraded the main runway of Changi Air Base, 45 aircraft parking bays, and support facilities and structures, including a large maintenance hangar, a fire station, workshops, administrative offices, an airfreight complex, two cargo-agent buildings, in-flight catering kitchens, and an 80-meter-high control tower.
Construction of the second phase would commence immediately after the completion of Phase 1. Phase 2 would include the second runway, 23 new aircraft parking bays in addition to the existing 45 bays, a second fire station, and a third cargo-agent building.
Changi Airport commenced commercial operations on 1 July 1981. Its first flight, Singapore Airlines SQ101, touched down that day at exactly 7:10:00 a.m. Singapore Time, carrying 140 passengers from Kuala Lumpur, Malaysia. It officially opened five months later, on 29 December 1981.
The airport ended its first year of operations-1981-with 12.1 million passengers served, close to 200,000 tonnes of air freight handled, and 63,100 aircraft movements. Subsequent phases opened progressively over the next few decades, with Terminal 2 opening for passenger traffic in 1990, Terminal 3 in 2008, and Terminal 4 in 2017. Terminal 5, now under construction, is expected to open in the mid-2030s.
A discussion of the current terminals is needed here, now that we have covered the albeit brief history of Changi. If you've noticed, some of the best airports have a shorter history than those airports with a longer historical narrative.
Changi Airport Has Four Main Passenger Terminals
The four terminals are arranged with "Jewel" located in the center of Terminals 1, 2, and 3. Currently, as of 2026, the airport has an operational capacity of 90 million passengers per annum (mppa) across its four terminals.
Interestingly, there is also a privately operated Commercially Important Person (CIP) luxury terminal called the JetQuay CIP Terminal. It is similar to the Lufthansa First Class Terminal at Frankfurt Airport but is open to all passengers traveling in all classes on all airlines for an access fee.
The short-lived Budget Terminal opened on 26 March 2006 and closed on 25 September 2012. It was subsequently demolished to make way for Terminal 4.
Terminal 5 (T5) Is Currently Under Construction
Lawrence Wong, the Prime Minister of Singapore and Minister of Finance, officiated the groundbreaking ceremony for Changi Airport T5 on 14 May 2025. The new terminal is expected to be ready by the mid-2030s.
Terminal 5 is expected to handle 50 million passenger movements per annum for Changi Airport. It will be built on reclaimed land to the east of the present terminals and will be partially funded through an increased levy.
The Jewel Is Honestly Quite Astonishing
Jewel Changi Airport, as it is officially named, opened on 17 April 2019. It is a nature-themed entertainment and retail complex interconnecting Terminals 1, 2, and 3.
Americans would likely liken it most closely to a stereotypical 1980s or 1990s mall. Announced in 2013, it is a new terminal-like structure intended to simultaneously function as a mixed-use complex.
It is situated on a 3.5-hectare site where the Terminal 1 car park used to be located, which has since been moved underground. Jewel was developed by Jewel Changi Airport Trustee Pte. Ltd., a joint venture between Changi Airport Group and CapitaLand, through its wholly owned shopping mall business, CapitaLand Mall Asia.
The project cost S$1.7 billion (US$1.3 billion in 2026 dollars at a negative exchange rate).
Jewel's various attractions include the Rain Vortex, the world's tallest indoor waterfall, standing at over 40 meters high and using recycled water. It is surrounded by a terraced forest setting.
Other attractions include Forest Valley, an indoor garden spanning five stories in height, and Canopy Park at the topmost level, featuring gardens and leisure facilities.
The Rain Vortex actually holds the world record for the tallest indoor waterfall in the world at 40 meters high, cascading down seven stories.
Jewel also includes a so-called "integrated multi-modal transport lounge." This lounge provides ticketing, boarding-pass collection, and baggage-transfer services in a single centralized location. Early check-in facilities enable passengers to drop off luggage up to 24 hours ahead of regular check-in times.
YOTEL operates a full-service hotel within Jewel, with approximately 130 rooms, which opened in April 2019.
Jewel's central retail area flourishes by housing both local and international brands, such as the first official Apple Store located inside an airport complex and the first permanent Pokémon Center in Asia outside Japan.
Other tenants include Muji, Zara, Uniqlo, Don Don Donki, Massimo Dutti, a Shaw Theatres cinema that includes an IMAX theater, a FairPrice Finest supermarket, as well as a full-service food court with more than 25 restaurants to choose from.
Jewel has a lineup of athleisure brands, such as Nike, Adidas, Descente, On, Fila, and New Balance. It also features a mix of local and international restaurant chains, such as A&W Restaurants, Jumbo Seafood, Shake Shack, Bee Cheng Hiang, Bengawan Solo, Ya Kun Kaya Toast, and Irvins.
Jewel Changi Airport was awarded the 2016 International Architecture Award by the Chicago Athenaeum, an international museum of architecture and design.
Jewel truly is the jewel of Singapore Changi Airport.
Let's Finish Up Our Analysis, Shall We?
We'll finish with a review of cargo and operations.
Changi offers a dedicated cargo hub on its grounds as well. The Air Hub & Cargo Development (AH&CD) department of Changi Airport Group (CAG) manages the Changi Airfreight Centre, which is located to the north of the airport premises.
In 2025, Changi Airport handled 2,080,000 tonnes of air freight, achieving one of its strongest cargo performances on record. The top five global air cargo markets in 2025 were China, the United States, Australia, Hong Kong, and India, according to global exchange analyses.
Changi Airport Group (Singapore) Pte. Ltd. (CAG) was formed on 16 June 2009 upon the corporatization of Singapore Changi Airport by the Civil Aviation Authority of Singapore (CAAS), as the licensee and operator of the airport.
As the airport only handles international passenger traffic, all terminals in operation are equipped with immigration-processing facilities for international travel.
After recovering from a drop in passenger traffic as a result of the September 11 attacks in 2001 and the Severe Acute Respiratory Syndrome (SARS) epidemic in 2003, the airport saw rapid growth in traffic, which hit the 30-million mark for the first time in 2004.
In March 2008, prior to the full effect of the 2008 financial crisis on the global economy, the airport was predicted to handle 50 million passengers by 2012 due to the opening of casinos in Singapore and the phased liberalization of the ASEAN (Association of Southeast Asian Nations) aviation sector. As predicted, the airport surpassed the 50-million mark in 2012.
Due to the COVID-19 pandemic, passenger traffic fell in 2020 and 2021, resulting in Terminals 2 and 4 closing temporarily in May 2020. Terminals 1 and 3 remained open for passengers throughout, but were closed to the general public on 12 May 2021, along with Jewel. They reopened on 1 September 2021.
On 1 November 2023, Terminal 2 fully reopened after three and a half years of upgrading during the pandemic. The refurbished terminal features nature-themed decorations and a 14-meter-tall digital waterfall display called the Wonderfall, providing Changi with two waterfalls: one actual and one digital.
In 2025, China was the largest passenger market for the airport, followed by Indonesia, Malaysia, Australia, and India. Kuala Lumpur, Bangkok, Jakarta, Denpasar (Bali), and Hong Kong were the busiest routes for the year, which speaks to its customer base.
The most popular-and indeed, only-United States destinations are United's hub of San Francisco. In addition, Singapore Airlines flies to San Francisco, Seattle/Tacoma, Newark, New York-JFK, and Los Angeles (LAX). United Airlines is the only U.S.-based carrier that flies to Singapore, highlighting the importance of its Star Alliance membership with Singapore Airlines.
Terminals 1, 2, and 3 of the airport are linked by the free Skytrain service, operating daily from 05:00 to 02:00. During non-operational hours, travelers within the transit areas may transfer between terminals on foot via inter-terminal travelators, while those in the public areas can use the mezzanine-level link bridges between T2 and T3, as well as the link bridge allowing passengers to travel on foot between T1 and T2/T3.
Terminal 4, as a separate building, is accessible by a complimentary shuttle-bus service in both the public and transit areas. The shuttle-bus journey between terminals in the public area takes about 10 minutes, while the shuttle-bus journey between terminals in the transit area takes between 10 and 18 minutes.
This sums up our analysis of the most popular and important airport in the world: Singapore's Changi Airport.
Thank you for learning along with us about the most popular airport in the world! Learn more and book your own travel consultation at Brooke In The Air Travel's official site, Brooke In The Air Travel.
