Flight Reliability
AS 2371 · Alaska Airlines
Portland → Anchorage (PDX–ANC)
89
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 2 min early
- Average arrival delay
- 0%
- Cancelled
- 7 min early
- Median arrival delay
Based on 289 historical flights. Data through May 2026.
What the data says
Mornings have a slight edge.
Departures between 6–9 AM arrived on time 84% of the time, against 78% between 9 PM–12 AM.
Friday is doing you no favors.
AS 2371 arrived on time 91% of the time on Mondays and just 73% on Fridays. That gap is worth planning around.
It basically never cancels.
Out of 289 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon91%(44 flights)
- Tue83%(40 flights)
- Wed87%(37 flights)
- Thu76%(42 flights)
- Fri73%(44 flights)
- Sat83%(36 flights)
- Sun84%(45 flights)
- 6–9 AM84%(215 flights)
- 9 PM–12 AM78%(73 flights)
80%
May
Jun 83% → May 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 84% | 31 |
| August 2025 | 87% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 81% | 31 |
| November 2025 | 93% | 30 |
| December 2025 | 63% | 27 |
| January 2026 | 79% | 19 |
| March 2026 | 86% | 14 |
| April 2026 | 72% | 29 |
| May 2026 | 80% | 10 |
- Departures on time
- 89%
- Diverted
- 0.3%
- Flights flown
- 288
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 289 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.