Alaska Airlines SEA to EWR on-time performance
Alaska Airlines nonstop flights from Seattle to Newark · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
2.2%
28 flights
Avg arrival delay
10 min
52 min when late
Rank on route
#2 of 2
route average 82% on time
Key facts
- Alaska Airlines flights on SEA to EWR arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 2.2% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 82% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (43%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion43%
- Airline (crew, maintenance, cleaning, fueling)29%
- Late-arriving aircraft19%
- Extreme weather9%
- Security0%
Other airlines on SEA to EWR
- United Airlines83% on time · 16 min avg delay
Full SEA to EWR comparison →
Alaska Airlines on-time record across all routes →
1,268 Alaska Airlines flights tracked on this route; 28 cancelled, 7 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.