Originally Posted by
readywhenyouare
Someone can correct me if I'm wrong but technically DIA was the code for about a day when the new Denver airport opened. There was a little overlap when Stapleton and the new Denver airport were open and there had to be two airport codes. Obviously it reverted back to DEN after Stapleton closed.
You're wrong.
The temporary code for Denver International before DEN was moved from Stapleton was "DVX".