Flight Reliability
AS 444 · Alaska Airlines
Seattle → Philadelphia (SEA–PHL)
80
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 2.1%
- Cancelled
- 9 min early
- Median arrival delay
Based on 145 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
AS 444 arrived on time 91% of the time on Wednesdays and just 65% on Fridays. That gap is worth planning around.
The breakdown
- Mon86%(21 flights)
- Tue81%(21 flights)
- Wed91%(21 flights)
- Thu72%(18 flights)
- Fri65%(20 flights)
- Sat85%(20 flights)
- Sun81%(21 flights)
91%
Oct
Jun 70% → Oct 91% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 70% | 30 |
| July 2025 | 71% | 28 |
| August 2025 | 81% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 91% | 23 |
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 142
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 145 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.