Flight Reliability
AS 8 · Alaska Airlines
San Francisco → Washington (SFO–DCA)
77
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.1%
- Cancelled
- 9 min early
- Median arrival delay
Based on 363 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
AS 8 arrived on time 92% of the time on Saturdays and just 69% on Wednesdays. That gap is worth planning around.
The breakdown
- Mon72%(50 flights)
- Tue86%(51 flights)
- Wed69%(52 flights)
- Thu74%(50 flights)
- Fri71%(51 flights)
- Sat92%(50 flights)
- Sun80%(51 flights)
74%
May
Jun 82% → May 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 82% | 28 |
| July 2025 | 61% | 28 |
| August 2025 | 68% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 74% | 31 |
| November 2025 | 86% | 29 |
| December 2025 | 81% | 31 |
| January 2026 | 79% | 29 |
| February 2026 | 82% | 28 |
| March 2026 | 77% | 30 |
| April 2026 | 83% | 29 |
| May 2026 | 74% | 31 |
- Departures on time
- 77%
- Diverted
- 1.1%
- Flights flown
- 355
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 363 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.