Flight Reliability
AS 629 · Alaska Airlines
Las Vegas → Seattle (LAS–SEA)
94
Nerd Approved
WanderNerd Reliability Score
- 89%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0.6%
- Cancelled
- 8 min early
- Median arrival delay
Based on 342 historical flights. Data through May 2026.
What the data says
Monday is the weak spot.
AS 629 arrived on time 94% of the time on Thursdays. On Mondays: 82%.
A bit ahead of the LAS–SEA route.
AS 629 arrived on time 89% of the time, versus 83% across the LAS–SEA route.
Better than the Alaska Airlines network average.
AS 629 arrived on time 89% of the time, versus 80% across the Alaska Airlines network.
Trending in the right direction.
AS 629 arrived on time 94% of the time over the last three months in the data, compared with 86% in the three months before that.
The breakdown
- Mon82%(50 flights)
- Tue92%(50 flights)
- Wed86%(50 flights)
- Thu94%(51 flights)
- Fri89%(44 flights)
- Sat86%(44 flights)
- Sun92%(51 flights)
90%
May
Jun 90% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 19 |
| July 2025 | 87% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 87% | 30 |
| November 2025 | 87% | 30 |
| December 2025 | 79% | 29 |
| January 2026 | 87% | 23 |
| February 2026 | 92% | 25 |
| March 2026 | 94% | 31 |
| April 2026 | 97% | 30 |
| May 2026 | 90% | 31 |
- Departures on time
- 82%
- Diverted
- 0%
- Flights flown
- 340
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 342 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.