How a prairie airfield transformed into Canada’s longest runway and a global hub

Countries & Cities · Published 10 October 2026 Swipe more like this →

In short: Calgary International Airport grew from a simple grass strip into a vital international gateway. Today, it features Canada's longest runway and a sophisticated terminal designed with sustainable geothermal technology. Yet, its expansion has sparked ongoing debates about terminal connectivity, operational efficiency, and the challenges of managing massive infrastructure growth.

The history of aviation in Calgary began in 1914 with a modest grass runway in Bowness. After shifting operations through several sites, including the Renfrew airfield, the city purchased land north of Calgary in 1938 for $31,000 to establish what is now the current airport. Originally named McCall Field after First World War ace Fred McCall, the site was repurposed during the Second World War as a maintenance hub and training school. By the late 1940s, the city resumed management, initiating a series of expansions that eventually led to the jet age and the construction of a major passenger terminal in 1977.

Modernizing the facility required massive investment and complex engineering. In 2014, the airport completed a 14,000-foot runway, the longest in Canada, which necessitated the construction of a 620-metre tunnel beneath it to maintain city traffic flow. This was followed in 2016 by a $1.6-billion international terminal. This facility introduced innovative features like North America's first call-to-gate boarding system and a geothermal heating and cooling network utilizing 581 wells. Despite these advancements, the terminal's design has faced criticism from WestJet, the airport's primary hub carrier, which argued that the distance between terminals complicates passenger connections.

Today, the airport serves as a critical economic engine for Alberta, handling 19.4 million passengers in 2025. Operated by the non-profit Calgary Airport Authority under a long-term lease, the facility manages three runways to accommodate varying wind conditions, including the frequent Chinooks. While the airport has successfully navigated challenges ranging from the Great Depression to the COVID-19 pandemic and severe weather events like the 2024 hailstorm, it remains a site of constant adaptation. The evolution from a small municipal field to a complex international hub highlights the tension between rapid infrastructure development and the practical demands of modern air travel.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• How a Canadian airport evolved from a simple hangar into a sprawling commercial hub
• How a wartime training base became Canada's busiest global aviation gateway
• How a remote Arctic meadow became a vital global aviation hub and testing ground
• From bush pilot roots to a LEED-certified hub, the evolution of Winnipeg's airport
• How Montreal’s airport survived a massive, failed attempt to replace it with a giant
• How a digital library of algorithms is transforming UK medical research and patient care
• Why Puerto Rico once named its deadliest hurricanes after the Catholic calendar of saints
• How a default office font became the world's most famous forensic smoking gun
• Cairo: A sprawling metropolis where ancient history meets modern global influence
• California is building the fastest train in the United States, but at what cost?
• Was Cain the first human murderer, or a symbol of something far more complex?
• The 2006 shooter that served as a rough first draft

More in Cities · More in Countries & Cities · Latest · A–Z · All topics