Denver International Airport debacle (1989–1995)
Denver's new airport opened 16 months late, pushed back by a failing automated baggage handling system. The budget estimate of $1.7 billion ballooned to nearly $5 billion. The airport finally opened in February 1995 using a manual backup for luggage.
Airlines reported hundreds of millions in losses from the delayed move. The automated baggage system was later scrapped entirely.
DIA became the cautionary tale for airport construction worldwide, especially for over-ambitious baggage automation.
Terminal C's current phase is literally the baggage handling system, the same component that doomed Denver's timeline.
