EWR → SEA: cancellations & delays
Over Jan 2023 - Apr 2026, 2.0% of Newark Liberty International Airport (EWR) to Seattle–Tacoma International Airport (SEA) flights were cancelled and 25.9% arrived at least 15 minutes late, across 6,695 flights, flown by AS, UA. Cancellations peak in January.
Check today's live EWR departures →Airport pages: Newark Liberty International Airport (EWR) · 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.