Two projects that quickly become interesting when considering the numbers are the upgrades underway at Chicago O'Hare International Airport (ORD) and the new King Salman Airport project in Riyadh, Saudi Arabia. According to Airport Technology, this expansion will essentially increase the airport's capacity to handle another 20 million passengers annually. Data published by Chicago's Mayor's office in 2026 shows the airport handled 84.8 million passengers in 2025. By 2030, the airport is expected to have a passenger capacity of 100 million and a cargo capacity of around two million tons. In the case of Riyadh's airport expansion, the cost is estimated to total up to a sum of $30 billion.