CHICAGO -- Chicago's plans to finance a third airport in the city may be in for some turbulence as the estimated cost of the project in an upcoming feasibility study is projected to hit $25 billion.

City officials had pegged the cost of an airport on the city's southeast side at around $5 billion, but sources familiar with the financing study said the price tag could be five times higher.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.