Flight Reliability
AS 566 · Alaska Airlines
San Diego → Spokane (SAN–GEG)99% of its flights flew this route. The rest (FAT–SEA, SEA–RNO) are included in these numbers.
90
Nerd Approved
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 0.5%
- Cancelled
- 13 min early
- Median arrival delay
Based on 199 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
AS 566 departing between 9 PM–12 AM arrived on time 90% of the time, versus 82% between 6–9 PM.
Sunday scaries are real for this one.
AS 566 arrived on time 95% of the time on Tuesdays and just 69% on Sundays. That gap is worth planning around.
A bit ahead of the Alaska Airlines network.
AS 566 arrived on time 84% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon94%(31 flights)
- Tue95%(20 flights)
- Wed85%(26 flights)
- Thu87%(30 flights)
- Fri74%(31 flights)
- Sat89%(28 flights)
- Sun69%(32 flights)
- 3–6 PM—(1 flights)
- 6–9 PM82%(157 flights)
- 9 PM–12 AM90%(40 flights)
90%
May
Nov 86% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 86% | 29 |
| December 2025 | 68% | 31 |
| January 2026 | 88% | 24 |
| February 2026 | 100% | 25 |
| March 2026 | 70% | 27 |
| April 2026 | 88% | 24 |
| May 2026 | 90% | 31 |
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 198
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 199 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.