Mayor Federico Pena and Adams County officials agree to build a replacement for Stapleton International Airport. Project estimate: $1.2 billion.

Denver voters pass airport referendum. Project estimate: $1.7 billion.

Mayor Wellington Webb announces first delay. Opening day postponed from October to December. Project estimate: $2.7 billion.

Opening pushed to March 1994; fire and security systems aren’t ready. Project estimate: $3.1 billion.

Now it’s the baggage system. Opening day delayed to May 15.

Webb says airport will miss fourth deadline.

Officials say they’ll float $225 million in bonds to finance a second baggage system and cover delays. Project estimate: $4 billion-plus. Opening date: TBA.