We usually measure either in terms of acreage, or square miles, so some calculating is required. BTW, 640 acres = 1 square mile. With that in mind, some of the numbers that I am somewhat familiar with:
DIA has 53 square miles, or 33,920 acres.
has 26.6 square miles, or 17,000 acres. I may be confusing DFW with MCO, I'll have to do some digging.
CLK's island is about 4.82 square miles.
By comparison, my little old airport has about 2 1/3 square miles, or 1,500 acres. I vaguely recall that LGA
has something like 800-900 acres.
Tom at MSY
(edited to add MCO note)
[Edited 2004-08-04 23:32:49]
"The criminal ineptitude makes you furious"-Bruce Springsteen, after seeing firsthand the damage from Hurricane Katrina