↑In the late 1940s, Chicago Midway was the busiest airport in the United States by total aircraft operations – i.e.، including every training aircraft practicing take-offs and landings. American Aviation 15 Mar 1947, 15 Mar 1948, 15 Apr 1949, 15 Apr 1950
↑New York LaGuardia had the most airline operations and passengers until the early 1950s, when Chicago Midway became the busiest airport in the United States by any criterion. Before World War II, Chicago Midway was the origin or destination of one in four U.S. airline flights,
↑Michelle Mullins (18 جولائی 1999). "Region leads the way in flight". 19 دسمبر 2002 میں اصل سے آرکائیو شدہ. اخذ شدہ بتاریخ 7 مارچ 2008.الوسيط |url-status= تم تجاهله (معاونت); تحقق من التاريخ في: |access-date=, |date=, |archive-date= (معاونت)
↑As the home of فیڈکس ایکسپریس، Memphis had the largest cargo operations worldwide from 1993 to 2009. It remains the busiest cargo airport in the United States and the Western Hemisphere.