Flight Reliability
AS 975 · Alaska Airlines
Phoenix → Seattle (PHX–SEA)92% of its flights flew this route. The rest (SEA–SJC) are included in these numbers.
65
Usually Fine
WanderNerd Reliability Score
- 64%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 1.4%
- Cancelled
- 6 min
- Median arrival delay
Based on 146 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
AS 975 arrived on time 71% of the time on Tuesdays and just 55% on Fridays. That gap is worth planning around.
Well behind the PHX–SEA route.
AS 975 arrived on time 64% of the time, versus 84% across the PHX–SEA route.
Well behind the Alaska Airlines network.
AS 975 arrived on time 64% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon70%(20 flights)
- Tue71%(21 flights)
- Wed57%(21 flights)
- Thu65%(20 flights)
- Fri55%(20 flights)
- Sat67%(21 flights)
- Sun62%(21 flights)
- 12–3 PM64%(11 flights)
- 3–6 PM64%(133 flights)
63%
Oct
Jun 57% → Oct 63% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 57% | 30 |
| July 2025 | 52% | 29 |
| August 2025 | 71% | 31 |
| September 2025 | 77% | 30 |
| October 2025 | 63% | 24 |
- Departures on time
- 65%
- Diverted
- 0%
- Flights flown
- 144
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 146 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.