DCA ranks as worst large U.S. airport for flight disruptions; Dulles also in top 10

ALSO READ | New helicopter rules put in place at IAD, BWI after midair crash at DCA ConsumerAffairs tells 7News a couple of factors hurt Reagan National. Another is that those cancellations too often leave travelers with no good alternatives.

One is its 2.8% cancellation rate, the highest among the airports they researched.