Flight Reliability
AS 579 · Alaska Airlines
Portland → Los Angeles (PDX–LAX)84% of its flights flew this route. The rest (PDX–ATL, PDX–BUR) are included in these numbers.
89
Pretty Reliable
WanderNerd Reliability Score
- 87%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.6%
- Cancelled
- 10 min early
- Median arrival delay
Based on 124 historical flights. Data through May 2026.
What the data says
Mornings have a slight edge.
Departures between 6–9 AM arrived on time 92% of the time, against 86% between 6–9 PM.
Thursday is the weak spot.
AS 579 arrived on time 92% of the time on Saturdays. On Thursdays: 78%.
A bit ahead of the Alaska Airlines network.
AS 579 arrived on time 87% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon91%(23 flights)
- Tue83%(12 flights)
- Wed85%(13 flights)
- Thu78%(18 flights)
- Fri86%(22 flights)
- Sat92%(12 flights)
- Sun91%(22 flights)
- 6–9 AM92%(12 flights)
- 9 AM–12 PM—(1 flights)
- 12–3 PM—(6 flights)
- 3–6 PM—(1 flights)
- 6–9 PM86%(102 flights)
95%
Sep
Jun 81% → Sep 95% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 81% | 21 |
| July 2025 | 88% | 24 |
| August 2025 | 84% | 25 |
| September 2025 | 95% | 21 |
- Departures on time
- 84%
- Diverted
- 0%
- Flights flown
- 122
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 124 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.