DCA → SEA: cancellations & delays
Over Jan 2023 - Apr 2026, 1.2% of Ronald Reagan Washington National Airport (DCA) to Seattle–Tacoma International Airport (SEA) flights were cancelled and 20.3% arrived at least 15 minutes late, across 2,847 flights, flown by AS, DL. Cancellations peak in January.
Check today's live DCA departures →Airport pages: Ronald Reagan Washington National Airport (DCA) · Seattle–Tacoma International Airport (SEA)
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.