Alaska Airlines EWR to SEA on-time performance
Alaska Airlines nonstop flights from Newark to Seattle · Aug 2025 – Jul 2026
On-time arrivals
72%
arrived < 15 min late
Cancelled
2.8%
35 flights
Avg arrival delay
20 min
68 min when late
Rank on route
#2 of 2
route average 74% on time
Key facts
- Alaska Airlines flights on EWR to SEA arrived on time 72% of the time in Aug 2025 – Jul 2026.
- 2.8% were cancelled, and 9% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 74% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (37%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion37%
- Late-arriving aircraft33%
- Airline (crew, maintenance, cleaning, fueling)18%
- Extreme weather11%
- Security2%
Other airlines on EWR to SEA
- United Airlines76% on time · 17 min avg delay
Full EWR to SEA comparison →
Alaska Airlines on-time record across all routes →
1,267 Alaska Airlines flights tracked on this route; 35 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.