Flight Reliability
AS 1291 · Alaska Airlines
Portland → Los Angeles (PDX–LAX)
84
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 1.9%
- Cancelled
- 10 min early
- Median arrival delay
Based on 105 historical flights. Data through May 2026.
What the data says
9 PM–12 AM has a slight edge.
Departures between 9 PM–12 AM arrived on time 84% of the time, against 80% between 6–9 PM.
Friday is doing you no favors.
AS 1291 arrived on time 90% of the time on Sundays and just 72% on Fridays. That gap is worth planning around.
A bit behind the PDX–LAX route.
AS 1291 arrived on time 84% of the time, versus 87% across the PDX–LAX route.
A bit ahead of the Alaska Airlines network.
AS 1291 arrived on time 84% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon78%(18 flights)
- Tue—(6 flights)
- Wed—(7 flights)
- Thu79%(19 flights)
- Fri72%(18 flights)
- Sat88%(16 flights)
- Sun90%(19 flights)
- 6–9 PM80%(10 flights)
- 9 PM–12 AM84%(93 flights)
85%
Oct
Jun 87% → Oct 85% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 15 |
| July 2025 | 63% | 19 |
| August 2025 | 81% | 26 |
| September 2025 | 97% | 30 |
| October 2025 | 85% | 13 |
- Departures on time
- 82%
- Diverted
- 0%
- Flights flown
- 103
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 105 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.