 GEOG: Reagan National Airport and Dulles International (IAD) are  only 27 miles apart. However, Baltimore/Washington International  (BWI) is still only 57 miles from Dulles by road, 46 from one to the  other directly. In the movie, we are informed that National has  closed due to weather conditions, but BWI is never mentioned, even  though it was dedicated in 1950 and acquired by the State of  Maryland in 1972. If the planes low on fuel could circle for 90  minutes, they could have easily been redirected to BWI.