Flight Reliability
AS 588 · Alaska Airlines
Portland → Santa Ana (PDX–SNA)100% of its flights flew this route. The rest (SEA–PSC) are included in these numbers.
95
Nerd Approved
WanderNerd Reliability Score
- 91%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 0.9%
- Cancelled
- 5 min early
- Median arrival delay
Based on 217 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
AS 588 arrived on time 97% of the time on Saturdays and just 81% on Wednesdays. That gap is worth planning around.
Better than the Alaska Airlines network average.
AS 588 arrived on time 91% of the time, versus 80% across the Alaska Airlines network.
Trending in the right direction.
AS 588 arrived on time 99% of the time over the last three months in the data, compared with 81% in the three months before that.
The breakdown
- Mon94%(31 flights)
- Tue94%(31 flights)
- Wed81%(31 flights)
- Thu90%(30 flights)
- Fri90%(31 flights)
- Sat97%(30 flights)
- Sun90%(31 flights)
- 9 AM–12 PM91%(214 flights)
- 9 PM–12 AM—(1 flights)
100%
May
Nov 96% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 96% | 28 |
| December 2025 | 71% | 31 |
| January 2026 | 87% | 30 |
| February 2026 | 85% | 27 |
| March 2026 | 97% | 31 |
| April 2026 | 100% | 30 |
| May 2026 | 100% | 31 |
- Departures on time
- 94%
- Diverted
- 0%
- Flights flown
- 215
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 217 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.