In the past few weeks, there has been extensive speculation regarding United Airlines’ decision to purchase a large amount of land at Denver International Airport (DEN), a facility that is arguably its most important connecting hub. While such a purchase may seem unimportant to the casual observer, industry insiders have continued to provide life to rumors that 
United Airlines might be planning a major shift of its global headquarters from the Willis Tower in Chicago to this new plot of land at Denver International Airport.