Flight Reliability
AS 658 · Alaska Airlines
Seattle → Las Vegas (SEA–LAS)98% of its flights flew this route. The rest (SEA–LAX, SEA–TUS) are included in these numbers.
84
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0.8%
- Cancelled
- 1 min early
- Median arrival delay
Based on 261 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
AS 658 arrived on time 91% of the time on Tuesdays and just 67% on Mondays. That gap is worth planning around.
A bit ahead of the SEA–LAS route.
AS 658 arrived on time 81% of the time, versus 77% across the SEA–LAS route.
Trending in the right direction.
AS 658 arrived on time 88% of the time over the last three months in the data, compared with 77% in the three months before that.
The breakdown
- Mon67%(36 flights)
- Tue91%(34 flights)
- Wed71%(35 flights)
- Thu89%(37 flights)
- Fri81%(37 flights)
- Sat87%(37 flights)
- Sun81%(42 flights)
- 12–3 PM81%(257 flights)
- 6–9 PM—(1 flights)
84%
May
Jun 68% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 68% | 19 |
| July 2025 | 72% | 29 |
| August 2025 | 77% | 30 |
| September 2025 | 90% | 30 |
| October 2025 | 72% | 25 |
| November 2025 | 80% | 10 |
| February 2026 | 79% | 19 |
| March 2026 | 87% | 30 |
| April 2026 | 93% | 30 |
| May 2026 | 84% | 31 |
- Departures on time
- 77%
- Diverted
- 0.4%
- Flights flown
- 258
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 261 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.