Flight Reliability
AS 10 · Alaska Airlines
Portland → Washington (PDX–DCA)
86
Pretty Reliable
WanderNerd Reliability Score
- 85%
- Arrive within 15 minutes
- 6 min early
- Average arrival delay
- 0.3%
- Cancelled
- 12 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
AS 10 arrived on time 92% of the time on Tuesdays. On Fridays: 79%.
A bit ahead of the Alaska Airlines network.
AS 10 arrived on time 85% of the time, versus 80% across the Alaska Airlines network.
It basically never cancels.
Out of 364 scheduled flights, only 0.3% were cancelled.
Ticking up lately.
AS 10 arrived on time 88% of the time over the last three months in the data, compared with 83% in the three months before that.
The breakdown
- Mon90%(51 flights)
- Tue92%(51 flights)
- Wed81%(52 flights)
- Thu84%(50 flights)
- Fri79%(52 flights)
- Sat86%(51 flights)
- Sun80%(51 flights)
93%
May
Jun 83% → May 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 78% | 27 |
| August 2025 | 90% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 77% | 31 |
| November 2025 | 90% | 29 |
| December 2025 | 87% | 31 |
| January 2026 | 90% | 30 |
| February 2026 | 71% | 28 |
| March 2026 | 77% | 31 |
| April 2026 | 93% | 30 |
| May 2026 | 93% | 30 |
- Departures on time
- 85%
- Diverted
- 1.4%
- Flights flown
- 358
- 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.