Flight Reliability
AS 1273 · Alaska Airlines
Phoenix → San Diego (PHX–SAN)
91
Nerd Approved
WanderNerd Reliability Score
- 89%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.5%
- Cancelled
- 11 min early
- Median arrival delay
Based on 66 historical flights. Data through May 2026.
What the data says
Wednesday is the weak spot.
AS 1273 arrived on time 90% of the time on Thursdays. On Wednesdays: 80%.
Better than the PHX–SAN route average.
AS 1273 arrived on time 89% of the time, versus 75% across the PHX–SAN route.
Better than the Alaska Airlines network average.
AS 1273 arrived on time 89% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon—(9 flights)
- Tue—(9 flights)
- Wed80%(10 flights)
- Thu90%(10 flights)
- Fri—(9 flights)
- Sat—(9 flights)
- Sun—(9 flights)
96%
Oct
Aug 83% → Oct 96% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 83% | 12 |
| September 2025 | 86% | 29 |
| October 2025 | 96% | 24 |
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 65
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 66 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.