SEA → EWR: cancellations & delays
Over Jan 2023 - Apr 2026, 1.7% of Seattle–Tacoma International Airport (SEA) to Newark Liberty International Airport (EWR) flights were cancelled and 22.0% arrived at least 15 minutes late, across 6,697 flights, flown by AS, UA. Cancellations peak in January.
Check today's live SEA departures →Airport pages: Seattle–Tacoma International Airport (SEA) · Newark Liberty International Airport (EWR)
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.