Flight Reliability
AS 1300 · Alaska Airlines
Seattle → Los Angeles (SEA–LAX)
81
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 2.4%
- Cancelled
- 2 min early
- Median arrival delay
Based on 286 historical flights. Data through May 2026.
What the data says
3–6 PM has a slight edge.
Departures between 3–6 PM arrived on time 86% of the time, against 82% between 12–3 PM.
Sunday scaries are real for this one.
AS 1300 arrived on time 90% of the time on Saturdays and just 74% on Sundays. That gap is worth planning around.
The breakdown
- Mon77%(48 flights)
- Tue87%(47 flights)
- Wed89%(45 flights)
- Thu88%(48 flights)
- Fri79%(43 flights)
- Sat90%(10 flights)
- Sun74%(38 flights)
- 12–3 PM82%(223 flights)
- 3–6 PM86%(56 flights)
81%
May
Jun 76% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 25 |
| July 2025 | 89% | 27 |
| August 2025 | 76% | 21 |
| September 2025 | 86% | 21 |
| October 2025 | 75% | 16 |
| November 2025 | 82% | 28 |
| December 2025 | 83% | 29 |
| January 2026 | 79% | 24 |
| February 2026 | 88% | 24 |
| March 2026 | 92% | 24 |
| April 2026 | 84% | 19 |
| May 2026 | 81% | 21 |
- Departures on time
- 79%
- Diverted
- 0%
- Flights flown
- 279
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 286 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.