Flight Reliability
AS 1238 · Alaska Airlines
Phoenix → Portland (PHX–PDX)
93
Nerd Approved
WanderNerd Reliability Score
- 85%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0%
- Cancelled
- 7 min early
- Median arrival delay
Based on 79 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AS 1238 departing between 12–3 PM arrived on time 88% of the time, versus 60% between 3–6 PM.
Tuesdays have been rough.
AS 1238 arrived on time 92% of the time on Sundays and just 75% on Tuesdays. That gap is worth planning around.
A bit ahead of the PHX–PDX route.
AS 1238 arrived on time 85% of the time, versus 80% across the PHX–PDX route.
A bit ahead of the Alaska Airlines network.
AS 1238 arrived on time 85% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon75%(12 flights)
- Tue75%(12 flights)
- Wed90%(10 flights)
- Thu82%(11 flights)
- Fri91%(11 flights)
- Sat91%(11 flights)
- Sun92%(12 flights)
- 12–3 PM88%(69 flights)
- 3–6 PM60%(10 flights)
95%
Aug
Jun 72% → Aug 95% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 72% | 29 |
| July 2025 | 90% | 31 |
| August 2025 | 95% | 19 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 79
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 79 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.