Flight Reliability
AS 799 · Alaska Airlines
Phoenix → Seattle (PHX–SEA)
90
Nerd Approved
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 1.0%
- Cancelled
- 4 min early
- Median arrival delay
Based on 208 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
AS 799 arrived on time 94% of the time on Sundays and just 77% on Saturdays. That gap is worth planning around.
A bit ahead of the Alaska Airlines network.
AS 799 arrived on time 86% of the time, versus 80% across the Alaska Airlines network.
Trending in the right direction.
AS 799 arrived on time 91% of the time over the last three months in the data, compared with 63% in the three months before that.
The breakdown
- Mon87%(30 flights)
- Tue90%(30 flights)
- Wed89%(27 flights)
- Thu86%(29 flights)
- Fri83%(29 flights)
- Sat77%(30 flights)
- Sun94%(31 flights)
92%
May
Jun 97% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 97% | 30 |
| July 2025 | 97% | 31 |
| August 2025 | 89% | 18 |
| November 2025 | 27% | 11 |
| December 2025 | 67% | 15 |
| February 2026 | 94% | 17 |
| March 2026 | 90% | 30 |
| April 2026 | 90% | 30 |
| May 2026 | 92% | 12 |
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 206
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 208 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.