BWI → SEA: cancellations & delays
Over Jan 2023 - Apr 2026, 1.3% of Baltimore/Washington International Thurgood Marshall Airport (BWI) to Seattle–Tacoma International Airport (SEA) flights were cancelled and 30.8% arrived at least 15 minutes late, across 1,904 flights, flown by AS, WN. Cancellations peak in January.
Check today's live BWI departures →Airport pages: Baltimore/Washington International Thurgood Marshall Airport (BWI) · 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.