Flight Reliability
AS 2399 · Alaska Airlines
Portland → Sacramento (PDX–SMF)
96
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 0.3%
- Cancelled
- 5 min early
- Median arrival delay
Based on 320 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
AS 2399 arrived on time 98% of the time on Fridays and just 78% on Wednesdays. That gap is worth planning around.
A bit ahead of the PDX–SMF route.
AS 2399 arrived on time 90% of the time, versus 85% across the PDX–SMF route.
Better than the Alaska Airlines network average.
AS 2399 arrived on time 90% of the time, versus 80% across the Alaska Airlines network.
It basically never cancels.
Out of 320 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon89%(44 flights)
- Tue96%(45 flights)
- Wed78%(46 flights)
- Thu89%(46 flights)
- Fri98%(46 flights)
- Sat93%(45 flights)
- Sun89%(46 flights)
- 6–9 AM90%(243 flights)
- 9 AM–12 PM92%(75 flights)
94%
May
Jun 84% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 84% | 19 |
| July 2025 | 90% | 30 |
| August 2025 | 90% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 87% | 30 |
| November 2025 | 93% | 30 |
| December 2025 | 90% | 31 |
| January 2026 | 89% | 27 |
| February 2026 | 77% | 13 |
| March 2026 | 94% | 16 |
| April 2026 | 90% | 30 |
| May 2026 | 94% | 31 |
- Departures on time
- 94%
- Diverted
- 0.3%
- Flights flown
- 318
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 320 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.