Alaska Airlines SEA to LAX on-time performance
Alaska Airlines nonstop flights from Seattle to Los Angeles · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.9%
31 flights
Avg arrival delay
9 min
42 min when late
Rank on route
#5 of 6
route average 83% on time
Key facts
- Alaska Airlines flights on SEA to LAX arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 0.9% were cancelled, and 4% arrived an hour or more late.
- That ranks #5 of 6 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (38%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)38%
- Late-arriving aircraft38%
- Air traffic control & airport congestion21%
- Extreme weather3%
- Security0%
Other airlines on SEA to LAX
- Delta Air Lines83% on time · 11 min avg delay
- SkyWest Airlines85% on time · 19 min avg delay
- United Airlines90% on time · 9 min avg delay
- Frontier Airlines80% on time · 13 min avg delay
- American Airlines87% on time · 18 min avg delay
Full SEA to LAX comparison →
Alaska Airlines on-time record across all routes →
3,289 Alaska Airlines flights tracked on this route; 31 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.