STL → DCA: cancellations & delays
Over Jan 2023 - Apr 2026, 1.8% of St. Louis Lambert International Airport (STL) to Ronald Reagan Washington National Airport (DCA) flights were cancelled and 23.1% arrived at least 15 minutes late, across 7,780 flights, flown by WN, OH, AA, YX, MQ. Cancellations peak in January.
Check today's live STL departures →Airport pages: St. Louis Lambert International Airport (STL) · Ronald Reagan Washington National Airport (DCA)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.