With all the uproar over the coveted slots at Washington National, and what will happen to US Airways' slots should they merge with United, I got to thinking.
Eastern had a bunch of slots at DCA. When they went bankrupt in early 1991, United agreed to buy the slots. But the Justice Department wouldn't allow it, and Northwest got the slots instead.
Northwest then built a mini-hub at DCA in the spring of 1991 with around 65 daily departures. A year later all of the flights were terminated except for service to their hubs.
My question is, what happened to those slots? They must have been extremely valuable given the constraints at that airport.