Flight Reliability
AS 738 · Alaska Airlines
Seattle → Las Vegas (SEA–LAS)
85
Pretty Reliable
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 0.6%
- Cancelled
- 3 min early
- Median arrival delay
Based on 333 historical flights. Data through May 2026.
What the data says
Skip Wednesday if you can.
AS 738 arrived on time 84% of the time on Saturdays. On Wednesdays: 69%.
Slipping a little lately.
AS 738 arrived on time 79% of the time over the last three months in the data, compared with 82% in the three months before that.
The breakdown
- Mon80%(50 flights)
- Tue79%(47 flights)
- Wed69%(42 flights)
- Thu79%(47 flights)
- Fri80%(46 flights)
- Sat84%(49 flights)
- Sun82%(50 flights)
- 9 AM–12 PM80%(229 flights)
- 12–3 PM78%(102 flights)
67%
May
Jun 76% → May 67% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 29 |
| July 2025 | 68% | 31 |
| August 2025 | 84% | 31 |
| September 2025 | 69% | 29 |
| October 2025 | 86% | 28 |
| November 2025 | 80% | 30 |
| December 2025 | 80% | 25 |
| January 2026 | 71% | 31 |
| February 2026 | 96% | 26 |
| March 2026 | 83% | 29 |
| April 2026 | 87% | 30 |
| May 2026 | 67% | 12 |
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 331
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 333 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.