Flight Reliability
AS 488 · Alaska Airlines
Portland → Palm Springs (PDX–PSP)86% of its flights flew this route. The rest (OGG–SAN, SEA–OAK) are included in these numbers.
- 88%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.4%
- Cancelled
- 5 min early
- Median arrival delay
Based on 146 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
AS 488 departing between 9 PM–12 AM arrived on time 95% of the time, versus 81% between 9 AM–12 PM.
Skip Wednesday if you can.
AS 488 arrived on time 95% of the time on Sundays. On Wednesdays: 82%.
A bit ahead of the PDX–PSP route.
AS 488 arrived on time 88% of the time, versus 84% across the PDX–PSP route.
Better than the Alaska Airlines network average.
AS 488 arrived on time 88% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon86%(21 flights)
- Tue91%(21 flights)
- Wed82%(22 flights)
- Thu90%(20 flights)
- Fri85%(20 flights)
- Sat89%(18 flights)
- Sun95%(21 flights)
- 6–9 AM85%(47 flights)
- 9 AM–12 PM81%(26 flights)
- 12–3 PM92%(51 flights)
- 9 PM–12 AM95%(19 flights)
Nov 86% → May 97% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 86% | 29 |
| December 2025 | 81% | 26 |
| January 2026 | 90% | 29 |
| February 2026 | 91% | 11 |
| May 2026 | 97% | 31 |
- Departures on time
- 88%
- Diverted
- 0.7%
- Flights flown
- 143
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 146 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.