Flight Reliability
AS 479 · Alaska Airlines
Las Vegas → Seattle (LAS–SEA)
80
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 2.0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 307 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
AS 479 arrived on time 93% of the time on Mondays and just 72% on Thursdays. That gap is worth planning around.
Trending in the right direction.
AS 479 arrived on time 91% of the time over the last three months in the data, compared with 83% in the three months before that.
The breakdown
- Mon93%(44 flights)
- Tue83%(35 flights)
- Wed84%(37 flights)
- Thu72%(47 flights)
- Fri73%(45 flights)
- Sat77%(47 flights)
- Sun84%(45 flights)
87%
May
Jun 42% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 42% | 19 |
| July 2025 | 63% | 27 |
| August 2025 | 68% | 31 |
| September 2025 | 79% | 29 |
| October 2025 | 92% | 24 |
| November 2025 | 86% | 22 |
| December 2025 | 67% | 15 |
| January 2026 | 83% | 18 |
| February 2026 | 100% | 24 |
| March 2026 | 87% | 30 |
| April 2026 | 100% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 84%
- Diverted
- 0.3%
- Flights flown
- 300
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 307 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.