Flight Reliability
AS 9 · Alaska Airlines
Washington → Portland (DCA–PDX)
70
Usually Fine
WanderNerd Reliability Score
- 69%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 0.8%
- Cancelled
- 1 min
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
AS 9 arrived on time 83% of the time on Saturdays and just 60% on Thursdays. That gap is worth planning around.
Lagging the Alaska Airlines network.
AS 9 arrived on time 69% of the time, versus 80% across the Alaska Airlines network.
Ticking up lately.
AS 9 arrived on time 75% of the time over the last three months in the data, compared with 71% in the three months before that.
The breakdown
- Mon71%(51 flights)
- Tue71%(52 flights)
- Wed67%(52 flights)
- Thu60%(50 flights)
- Fri67%(52 flights)
- Sat83%(52 flights)
- Sun65%(51 flights)
87%
May
Jun 60% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 60% | 30 |
| July 2025 | 52% | 29 |
| August 2025 | 81% | 31 |
| September 2025 | 70% | 30 |
| October 2025 | 71% | 31 |
| November 2025 | 59% | 29 |
| December 2025 | 65% | 31 |
| January 2026 | 79% | 29 |
| February 2026 | 68% | 28 |
| March 2026 | 55% | 31 |
| April 2026 | 83% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 74%
- Diverted
- 0.3%
- Flights flown
- 360
- Months covered
- 12
Keep nerding
Based on 364 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.